# Zeaclub

Zeaclub is The Maritime Operating System: one connected platform for vessels, operations, people and payments.

Official website: https://zeaclub.com
Contact Sales: https://zeaclub.com/contact
Email: hello@zeaclub.com
Phone: +971581943978

## Official resources
- Resources: https://zeaclub.com/resources
- Zea Notes: https://zeaclub.com/resources/zea-notes
- Maritime glossary: https://zeaclub.com/resources/glossary
- Full clean-text content: https://zeaclub.com/llms-full.txt

## Zea Notes articles
- What Is a Maritime Operating System? A Practical Guide for Shipping Teams: https://zeaclub.com/resources/zea-notes/maritime-operating-system
- Veson IMOS, Kpler and Zeaclub: Understanding Three Different Maritime Software Categories: https://zeaclub.com/resources/zea-notes/veson-imos-kpler-zeaclub-comparison
- From Fixture to Final Settlement: The Commercial Voyage Workflow Explained: https://zeaclub.com/resources/zea-notes/fixture-to-final-settlement
- Laytime and Demurrage Without the Jargon: https://zeaclub.com/resources/zea-notes/laytime-demurrage-guide
- Maritime Single Window: What Ship Operators and Port Agents Need to Know: https://zeaclub.com/resources/zea-notes/maritime-single-window-guide
- AIS Explained: From Vessel Signal to Maritime Intelligence: https://zeaclub.com/resources/zea-notes/ais-vessel-tracking-explained
- Digital Twins for Ships: Useful Model or Marketing Phrase?: https://zeaclub.com/resources/zea-notes/ship-digital-twin-guide
- Maritime Payments and Payroll: How the Embedded Model Works: https://zeaclub.com/resources/zea-notes/maritime-payments-payroll
- A Modern Digital Workspace for Seafarers: https://zeaclub.com/resources/zea-notes/digital-workspace-for-seafarers
- EU ETS and FuelEU Maritime: An Operations Guide: https://zeaclub.com/resources/zea-notes/eu-ets-fueleu-maritime-guide
- CII and EEXI Explained for Commercial Teams: https://zeaclub.com/resources/zea-notes/cii-eexi-commercial-guide
- Predictive Maintenance at Sea: A Practical Starting Point: https://zeaclub.com/resources/zea-notes/predictive-maintenance-shipping
- How Shipbrokers Work—and Where Digital Tools Actually Help: https://zeaclub.com/resources/zea-notes/shipbroker-digital-workflow
- Port Agents: The Operational Link Between Ship and Shore: https://zeaclub.com/resources/zea-notes/port-agent-role-workflow
- Maritime AI: Where It Helps, Where It Fails and How to Govern It: https://zeaclub.com/resources/zea-notes/maritime-ai-governance
- Choosing Maritime Software: A Buyer’s Checklist: https://zeaclub.com/resources/zea-notes/choose-maritime-software

## Products
- Zea OS: https://zeaclub.com/platform/zea-os
- Zea Intelligence: https://zeaclub.com/platform/zea-intelligence
- Zea IoT: https://zeaclub.com/platform/zea-iot
- Zea Pay: https://zeaclub.com/platform/zea-pay
- Zea Crew: https://zeaclub.com/platform/zea-crew
- Zea Connect: https://zeaclub.com/platform/zea-connect
- Zea Tools: https://zeaclub.com/platform/zea-tools

# Full Zea Notes content

## What Is a Maritime Operating System? A Practical Guide for Shipping Teams

Maritime teams rarely suffer from a lack of software. They suffer from too many disconnected systems, duplicated data and decisions that disappear into inboxes. A maritime operating system is an attempt to solve that fragmentation at workflow level.

Canonical URL: https://zeaclub.com/resources/zea-notes/maritime-operating-system
Reviewed: 2026-07-12

### The problem is not one missing app

A voyage can touch chartering, operations, technical management, finance, crewing, agents, brokers, terminals and counterparties. Each function may have a competent tool, yet the voyage still breaks down at the hand-offs. A fixture recap sits in email. The latest port instruction is in a chat. A noon report arrives as an attachment. The demurrage calculation lives in a spreadsheet. Finance receives the final context too late.
The cost is not merely administrative. Fragmented context creates re-keying, inconsistent assumptions, delayed approvals, weak audit trails and avoidable disputes.

### What the operating-system idea means

A maritime operating system is a connected layer for the people, records and actions that move a voyage forward. It should create a reliable operational record, preserve permissions and history, and allow specialist systems to exchange context rather than compete to own every function.
For Zeaclub, that model is expressed as one connected platform for vessels, operations, people and payments. Zea OS organises the commercial and operational workflow; Zea Intelligence adds automation and decision support; Zea IoT connects vessel and performance data; Zea Crew and Zea Connect support people and collaboration; Zea Pay connects approved financial workflows through regulated providers.

### How it differs from a traditional maritime ERP

Traditional maritime ERP suites are often designed around deep functional modules, accounting structures and company-wide records. They can be powerful systems of record. An operating layer is more concerned with the live flow of work: who needs to act, which data is current, what changed, what is blocked and how one workflow should trigger another.
The categories overlap. The useful question is not whether a product calls itself ERP, VMS or operating system. It is whether the platform reduces the number of disconnected decisions and preserves a trustworthy record from fixture to final settlement.

### The minimum capabilities to expect

A credible platform should support structured voyage records, document control, role-based access, tasks and alerts, collaboration, integrations, reporting, audit history and exportable data. Depending on the operator, it may also include voyage estimation, laytime, claims, bunker and emissions data, maintenance, crewing, payments or market intelligence.

### A sensible adoption path

Start with one painful workflow rather than an enterprise-wide replacement. Port-call coordination, voyage handover, document collection, laytime preparation and invoice approval are useful entry points. Measure cycle time, missing-data events, duplicated entry, response time and dispute frequency. Expand only after the workflow becomes visibly easier for the people doing the work.

### Frequently asked questions

Q: Is a maritime operating system the same as a voyage management system?
A: Not exactly. A voyage management system typically focuses on commercial voyage workflows. A maritime operating system can connect a wider set of vessel, people, document and payment workflows while integrating with a VMS.

Q: Can it replace IMOS or a maritime ERP?
A: Sometimes, but replacement should not be assumed. Many companies use an operating layer alongside established systems and migrate selected workflows only when the business case is clear.

Q: What should a shipping company digitise first?
A: Choose a frequent, cross-functional process with measurable friction, such as voyage handover, port-call documentation, laytime preparation or approval workflows.

## Veson IMOS, Kpler and Zeaclub: Understanding Three Different Maritime Software Categories

These platforms are often mentioned in the same conversation, but they solve different layers of the maritime technology stack. Treating them as direct substitutes can lead to a poor buying decision.

Canonical URL: https://zeaclub.com/resources/zea-notes/veson-imos-kpler-zeaclub-comparison
Reviewed: 2026-07-12

### Veson IMOS: commercial freight and voyage workflows

Veson positions IMOS as a commercial maritime freight-management platform spanning voyage and freight estimation, planning and operations, exposure management and post-voyage settlement. It is widely associated with structured workflows from fixture through final invoice and with integrations across the maritime software ecosystem.
The fit is strongest where a company needs a mature commercial system of record, sophisticated voyage economics, trading and risk capabilities, and established enterprise processes.

### Kpler: trade and maritime intelligence

Kpler focuses on real-time physical-trade and maritime intelligence. Its maritime offering combines AIS-driven vessel visibility, analytics, cargo and trade-flow context, arrival forecasts and data integrations. It is used when teams need to understand what is happening across fleets, ports, commodity flows and markets—not only what is recorded inside their own company.
The fit is strongest for traders, analysts, charterers, risk teams, governments and operators that depend on external market visibility and high-volume maritime data.

### Zeaclub: connected operational workflow

Zeaclub is being built as the Maritime Operating System: a connected workspace for vessels, operations, people and payments. Its intended role is to reduce the gaps between stakeholders, documents, tasks and decisions, while allowing specialist data and enterprise systems to remain connected.
The platform is designed around modern user experience, shared operational context, modular products and AI-assisted workflows. The practical differentiation is not a claim to recreate every mature capability of IMOS or every dataset behind Kpler. It is the focus on usable coordination across the wider maritime ecosystem.

### Complement, compete or integrate?

A shipping company may use all three categories. Market intelligence can inform a voyage decision; the commercial system can record the economics; the operating layer can coordinate execution with agents, crew, finance and counterparties. The architecture should be judged by data ownership, API access, duplicate entry, user adoption and total workflow cost.

### Questions to ask before buying

Which system will remain the source of truth? Which users need full licences and which need controlled external access? How quickly can data be exported? Does the platform expose APIs? What is the implementation burden? Can workflows be configured without creating a permanent consulting dependency? How does the vendor handle auditability, permissions and AI-generated suggestions?

### Frequently asked questions

Q: Is Kpler a voyage management system?
A: Kpler is primarily a trade and maritime intelligence platform. It can support voyage and fleet decisions, but its core category differs from a commercial VMS such as IMOS.

Q: Is Zeaclub a replacement for Veson IMOS?
A: Zeaclub can overlap with selected voyage and collaboration workflows, but its best fit may be as a modern operating and interoperability layer. Replacement depends on scope, integrations and the customer's required depth.

Q: Can maritime platforms share data?
A: Yes, where vendors provide suitable APIs, exports and permissions. Integration design should define the source of truth and avoid uncontrolled duplication.

## From Fixture to Final Settlement: The Commercial Voyage Workflow Explained

A voyage is not a single transaction. It is a chain of commercial promises, operational events, documents, calculations and approvals. The weakest hand-off often determines the quality of the final result.

Canonical URL: https://zeaclub.com/resources/zea-notes/fixture-to-final-settlement
Reviewed: 2026-07-12

### 1. Opportunity and voyage estimation

Before a fixture, the commercial team evaluates cargo, vessel suitability, route, port costs, bunkers, duration, freight, commissions, weather and risk. The estimate is a decision model—not a guarantee. Assumptions should be versioned so the team can later understand why the voyage performed differently.

### 2. Negotiation, subjects and fixture

The brokered negotiation produces offers, counteroffers and subjects. Once the essential terms are agreed, a fixture recap records the commercial understanding pending the full charter party. Clean transfer from recap to the operational record is critical because small transcription errors can affect notices, laytime, freight or claims.

### 3. Handover to operations

Operations turns a commercial promise into an executable voyage. The team confirms instructions, contacts, certificates, cargo details, port requirements, agents, bunker plans and reporting expectations. A structured handover should distinguish confirmed facts, assumptions and unresolved items.

### 4. Voyage and port-call execution

The vessel and shore team exchange ETAs, noon reports, notices, instructions and port documents. Agents coordinate clearances and services. Changes in weather, congestion, berth availability, cargo readiness or vessel performance can alter the plan quickly. Every material event needs time, source and context.

### 5. Laytime, demurrage and claims

The Statement of Facts, Notice of Readiness, charter-party clauses and supporting documents form the evidence base. Laytime is calculated according to the contract, not intuition. Exceptions, stoppages and time bars must be handled carefully. A transparent calculation reduces avoidable disagreement.

### 6. Freight, disbursements and final settlement

Finance reconciles freight, hire where relevant, commissions, bunker adjustments, port disbursements, claims and other voyage costs. The quality of settlement depends on the quality of the operational record. Closing a voyage should preserve the final numbers and the reasoning behind them.

### Frequently asked questions

Q: What does fixture mean in shipping?
A: A fixture is the agreement of a ship or cargo employment on negotiated terms, commonly recorded first in a fixture recap and later in a charter party.

Q: What happens after a vessel is fixed?
A: The commercial terms are handed to operations for voyage planning, instructions, documentation, port calls, reporting, claims and settlement.

Q: Why is the Statement of Facts important?
A: It provides a chronological record of port events and is a primary source for laytime and demurrage analysis.

## Laytime and Demurrage Without the Jargon

Laytime disputes often look mathematical, but the real difficulty is contractual: deciding which minutes count, when the clock starts and what evidence supports each event.

Canonical URL: https://zeaclub.com/resources/zea-notes/laytime-demurrage-guide
Reviewed: 2026-07-12

### The basic idea

Laytime is the contractually allowed time for loading or discharging. When the charterer uses more than the allowed time, demurrage may become payable at the agreed rate. Where the contract provides for it, completing within the allowed time may create despatch.

### A simple example

A charter allows 72 running hours to load. Valid laytime starts at 12:00 on Monday. The operation finishes at 18:00 on Thursday. The raw elapsed time is 78 hours. If six hours are excluded under the charter party, the counted time is 72 hours and no demurrage is due. Change one exception or the validity of the Notice of Readiness, and the result changes.

### The documents that matter

The charter party defines the rules. The Notice of Readiness may trigger the laytime mechanism. The Statement of Facts records the sequence of events. Timesheets, weather records, pumping logs, letters of protest and terminal records may support or challenge the calculation.

### Common causes of dispute

Typical issues include premature or invalid NOR, berth versus port charter wording, weekends and holidays, weather interruptions, shifting time, breakdowns, congestion, cargo unavailability, documentation delays, reversible laytime, once-on-demurrage principles and claim time bars.

### How software helps—and where it cannot decide

Software can structure events, apply configured rules, preserve source documents, flag inconsistencies and generate a transparent calculation. It should not pretend that every clause has one obvious interpretation. Human review remains necessary where facts or legal meaning are disputed.

### Frequently asked questions

Q: What is the difference between laytime and demurrage?
A: Laytime is the allowed cargo-handling time. Demurrage is the agreed compensation that may be payable when counted time exceeds that allowance.

Q: Does bad weather always stop laytime?
A: No. The answer depends on the charter-party wording, the stage of the operation and the facts recorded.

Q: Can AI calculate demurrage?
A: AI can extract events and assist with a draft, but the final result should be checked against the governing contract and evidence.

## Maritime Single Window: What Ship Operators and Port Agents Need to Know

Since 1 January 2024, IMO Member States have been required to use Maritime Single Windows for the electronic exchange of information needed for ship clearance. The obligation sits with public authorities, but its operational consequences reach ships, agents and shore teams.

Canonical URL: https://zeaclub.com/resources/zea-notes/maritime-single-window-guide
Reviewed: 2026-07-12

### What a Maritime Single Window does

A Maritime Single Window is a digital environment through which required information for a ship's arrival, stay and departure can be submitted and exchanged. The underlying principle is that data should be submitted once and reused as far as possible.

### Why implementation is still difficult

The global requirement does not create one identical interface. National and port systems can differ in data fields, identity processes, integrations and operating practice. Shipping companies still need strong master data, document control and clear responsibility between vessel, agent and shore office.

### Operational preparation

Maintain reliable vessel particulars, crew and passenger data, certificates, voyage details, cargo and dangerous-goods information. Define who validates each submission. Track deadlines by port. Record acknowledgement and correction history. Avoid copying old forms without confirming that the information remains current.

### Where an operating platform can help

A connected port-call workflow can reuse approved vessel data, request missing information from the correct party, attach source documents, preserve submission status and integrate with national systems where APIs are available. The goal is not merely electronic form filling; it is controlled data reuse.

### The SEO opportunity for Zea Notes

Country and port-specific guides can answer high-intent questions such as 'Maritime Single Window UAE', 'port clearance documents for bulk carrier' and 'FAL forms explained'. Each guide should be reviewed regularly because local requirements change.

### Frequently asked questions

Q: Is the Maritime Single Window mandatory?
A: IMO Member States have been required to use Maritime Single Windows for ship-clearance data exchange since 1 January 2024.

Q: Is there one global Maritime Single Window website?
A: No. Implementation is handled by national or local public authorities, so interfaces and processes vary.

Q: What data is submitted?
A: Requirements commonly cover vessel, voyage, crew, cargo, security, health, waste and port-call information, subject to the applicable authority.

## AIS Explained: From Vessel Signal to Maritime Intelligence

AIS makes global shipping visible, but it is not a perfect live map. It is a radio-based safety system whose messages are collected, cleaned and enriched before they become commercial intelligence.

Canonical URL: https://zeaclub.com/resources/zea-notes/ais-vessel-tracking-explained
Reviewed: 2026-07-12

### What AIS transmits

AIS messages can include maritime mobile service identity, vessel name, position, course, speed, navigational status, dimensions, destination and estimated time of arrival. Some fields are entered manually and may be incomplete or wrong.

### Terrestrial and satellite reception

Coastal receivers capture signals within radio range. Satellite AIS extends coverage offshore but must handle message collisions and revisit intervals. Commercial providers combine multiple receiver networks and apply cleaning, identity resolution and enrichment.

### Why tracks contain gaps

Coverage, antenna condition, congestion, equipment settings, transmission class, deliberate switching-off, spoofing, interference and data-provider processing can all create missing or misleading points. A gap is a signal for investigation, not automatic proof of wrongdoing.

### Operational uses

Teams use AIS for ETA monitoring, fleet visibility, port-call planning, route review, congestion analysis, sanctions screening support, cargo-flow estimation and exception alerts. The best systems combine AIS with weather, port, vessel, cargo and company records.

### How Zeaclub should position AIS

Zea Intelligence and Zea IoT can translate vessel data into operational actions: late-arrival alerts, port-call task changes, deviation review, performance context and stakeholder updates. Zeaclub should be clear that it may integrate specialist data providers rather than claiming to own the entire global collection network.

### Frequently asked questions

Q: Is AIS the same as GPS?
A: No. GPS can provide position to the vessel, while AIS broadcasts vessel identity and navigation-related messages over radio using position inputs.

Q: Can AIS be switched off?
A: Equipment may be switched off in limited safety or security circumstances under applicable rules, but unexplained gaps require context.

Q: How accurate is an AIS ETA?
A: The transmitted ETA may be manually entered. Analytics platforms can generate separate arrival forecasts using track, speed, weather and port conditions.

## Digital Twins for Ships: Useful Model or Marketing Phrase?

A digital twin should be more than a three-dimensional ship on a dashboard. Its value comes from maintaining a useful relationship between a physical asset, its operating data and a model that supports decisions.

Canonical URL: https://zeaclub.com/resources/zea-notes/ship-digital-twin-guide
Reviewed: 2026-07-12

### A spectrum, not one product

At the simplest level, a digital representation may combine vessel particulars, equipment hierarchy, documents and current sensor values. More advanced twins include physics-based or statistical models for fuel use, machinery behaviour, degradation, route performance or failure risk.

### The data foundation

Inputs can include navigation data, engine and auxiliary measurements, fuel flow, electrical load, alarms, weather, cargo condition, maintenance records and noon reports. Data quality, timestamp alignment, sensor calibration and equipment context matter more than visual polish.

### High-value use cases

Useful applications include performance baselines, hull and propeller degradation, machinery anomaly detection, maintenance planning, fuel optimisation, emissions reporting, training and scenario testing. Each use case needs a defined decision and an owner.

### Integration and cyber safety

Vessel connectivity should be read-only by default where appropriate, segmented from safety-critical systems and aligned with the operator's cyber-risk controls. A software edge agent may collect approved data from NMEA/IEC 61162, OPC UA, Modbus, vendor APIs, databases or files and send compressed, encrypted data ashore.

### A realistic Zea IoT proposition

Zea IoT should focus on an interoperable operational model: connect approved sources, preserve provenance, expose vessel context to Zea OS and trigger understandable alerts. It should integrate with established onboard and fleet platforms where that is safer and faster than replacing them.

### Frequently asked questions

Q: Does a digital twin require real-time sensor data?
A: Not always. Some use cases work with periodic reports, but higher-frequency operational or machinery models usually require suitable sensor data.

Q: Is a 3D vessel model a digital twin?
A: Not by itself. A useful twin links the representation to current or historical asset data and a decision model.

Q: Can digital twins predict equipment failure?
A: They can support anomaly detection and risk estimates when trained or configured with sufficient quality data, but they do not eliminate engineering judgement.

## Maritime Payments and Payroll: How the Embedded Model Works

Shipping payments cross currencies, jurisdictions, vessels and employment arrangements. The user experience can be unified, but the regulated movement of money must remain clearly assigned to licensed providers.

Canonical URL: https://zeaclub.com/resources/zea-notes/maritime-payments-payroll
Reviewed: 2026-07-12

### The embedded-finance structure

A software platform can present beneficiary management, approvals, payment status, reconciliation and payroll workflows while a regulated bank, payment institution or banking-as-a-service provider holds funds and executes regulated services. Contracts and user disclosures must make the roles clear.

### Why maritime is difficult

Payments may involve owners, managers, agents, masters, suppliers, brokers, crew and overseas beneficiaries. Supporting documents, sanctions checks, exchange rates, cut-off times, correspondent banking and local payout methods affect speed and cost.

### Stablecoins as settlement infrastructure

Regulated providers may use tokenised money or stablecoins in the back end to shorten parts of cross-border settlement. This does not remove onboarding, sanctions, source-of-funds, travel-rule, licensing, safeguarding, off-ramp or local banking requirements. The customer-facing promise should be based on the actual regulated route available.

### Seafarer payroll considerations

A good payroll workflow manages contracts, allotments, deductions, exchange instructions, payslips, approval and payment evidence. It should respect MLC wage obligations, company policy, flag-state requirements and employment agreements.

### How Zea Pay should communicate

Zea Pay should be described as a maritime finance and payment experience delivered with regulated partners. Avoid language that implies Zeaclub itself is a bank, custodian, remittance provider or licensed money transmitter unless and until that is legally true in the relevant jurisdiction.

### Frequently asked questions

Q: Does an embedded-finance platform need a banking licence?
A: The software provider may not need to hold the customer's funds itself, but regulated activities must be carried out by appropriately licensed partners and the legal structure varies by jurisdiction.

Q: Can stablecoins make maritime payments instant?
A: They can accelerate certain settlement legs, but onboarding, compliance, banking cut-offs and local payout rails still affect end-to-end time.

Q: What is a seafarer allotment?
A: It is an authorised portion of wages paid regularly to a nominated person or account, subject to the employment and legal framework.

## A Modern Digital Workspace for Seafarers

Seafarers repeatedly submit the same identity, certification and employment information to different companies. A better model gives the individual a reusable, permissioned professional record.

Canonical URL: https://zeaclub.com/resources/zea-notes/digital-workspace-for-seafarers
Reviewed: 2026-07-12

### The personal maritime record

A seafarer workspace can organise passport and seaman-book details, certificates, medicals, visas, sea service, appraisals, training and expiry reminders. Sensitive documents should never be broadly public; the seafarer should control who can view what and for how long.

### Job applications without repeated paperwork

Structured profiles can match rank, vessel type, experience, certificates, availability and location to vacancies. Employers still need verification, interviews and safe recruitment processes. The platform should actively reduce fake jobs, unlawful fees and identity misuse.

### Community and professional belonging

Life at sea can be isolating. A maritime community can support peer discussion, mentoring, learning, local meet-ups and professional identity across contracts. Moderation, privacy and clear conduct rules are essential.

### Employer and crewing workflows

With consent, verified data can flow into applicant tracking, onboarding, travel, payroll, training and crew planning. This reduces re-entry while preserving a record of what was verified and when.

### The Zea Crew and Zea Connect opportunity

Zea Crew can become the professional wallet for a maritime career, while Zea Connect provides the network around it. The product should earn trust through practical utility first: expiry reminders, reusable applications, verified opportunities and secure sharing.

### Frequently asked questions

Q: What documents should a seafarer keep digitally?
A: Common records include identity documents, certificates of competency, STCW certificates, medical certificates, visas, vaccination records, sea-service evidence and employment documents.

Q: Can a digital profile replace original certificates?
A: Not automatically. Authorities and employers may still require originals or approved digital verification.

Q: Should seafarers pay recruitment fees?
A: The MLC framework regulates recruitment and placement and generally protects seafarers from prohibited recruitment charges, subject to limited document-related exceptions and national implementation.

## EU ETS and FuelEU Maritime: An Operations Guide

Decarbonisation regulation is now part of everyday voyage economics. The hard part is not knowing the acronyms; it is assigning accurate data, contractual responsibility and financial exposure to the correct voyage and party.

Canonical URL: https://zeaclub.com/resources/zea-notes/eu-ets-fueleu-maritime-guide
Reviewed: 2026-07-12

### EU ETS maritime in practice

Maritime transport entered the EU Emissions Trading System from 1 January 2024 for covered ships and voyages. The system creates an allowance obligation linked to verified emissions within its scope. Operational teams need consistent voyage boundaries, fuel and emissions data, port-call classification and handover to the responsible entity.

### FuelEU Maritime in practice

FuelEU Maritime applies in full from 1 January 2025 and targets the greenhouse-gas intensity of energy used on board covered ships trading in the EU/EEA context. It introduces monitoring, verification and compliance mechanisms that can affect fuel choice, pooling, banking and commercial agreements.

### Why contracts matter

Owners, charterers, managers and pool participants may allocate data duties and costs through charter-party clauses and side agreements. The regulatory responsible entity and the party bearing commercial cost are not always the same. Advice should be taken on the exact contract and regulation.

### The operational data chain

Bunker delivery notes, fuel-consumption records, voyage legs, port calls, shore-power use, fuel characteristics and verifier interactions must be traceable. Corrections should preserve an audit history. Finance needs a defensible link between the compliance position and voyage P&L.

### Software requirements

A useful platform should calculate transparently, show assumptions, identify missing data, separate regulatory and commercial allocations, support verification evidence and integrate with established MRV and allowance workflows. A black-box score is not enough.

### Frequently asked questions

Q: When did EU ETS apply to maritime shipping?
A: The extension began on 1 January 2024 for covered maritime emissions, with phased surrender obligations under the legislation.

Q: When did FuelEU Maritime apply?
A: The regulation applies in full from 1 January 2025.

Q: Are EU ETS and FuelEU the same?
A: No. EU ETS puts a carbon price on covered emissions through allowances, while FuelEU targets the greenhouse-gas intensity of onboard energy and includes separate compliance mechanisms.

## CII and EEXI Explained for Commercial Teams

EEXI and CII are related but different. One assesses a ship's technical energy-efficiency design condition; the other measures annual operational carbon intensity.

Canonical URL: https://zeaclub.com/resources/zea-notes/cii-eexi-commercial-guide
Reviewed: 2026-07-12

### EEXI: the technical measure

The Energy Efficiency Existing Ship Index compares the attained technical efficiency of an existing ship with a required value. It applies according to ship type and size and may be addressed through measures such as engine-power limitation or technical modification.

### CII: the annual operational measure

The Carbon Intensity Indicator applies to covered ships of 5,000 gross tonnage and above and results in an annual A-to-E rating. It relates emissions to transport work using the applicable methodology. Ships rated poorly over the specified period may require corrective planning.

### Why commercial teams should care

Speed, waiting, routing, cargo intake, weather, ballast legs, technical condition and contractual instructions can influence operational intensity. A technically efficient vessel can still perform poorly when the voyage pattern is inefficient.

### The data conversation between owner and charterer

Improvement can require cooperation on speed orders, arrival planning, data exchange and operational constraints. Charter-party language is evolving to allocate information and decision rights. The platform should record who requested what, when and with which consequence.

### From compliance metric to operating habit

Teams should avoid managing only to the annual rating. Monitor trends by voyage and operating mode, compare actual against realistic baselines, investigate outliers and connect corrective actions to owners. Better arrival planning and reduced idle consumption can support cost and emissions performance at the same time.

### Frequently asked questions

Q: What is a good CII rating?
A: A is the highest rating, followed by B, C, D and E under the IMO framework.

Q: Is CII based only on ship design?
A: No. CII is an operational annual indicator; EEXI is the related technical efficiency measure for existing ships.

Q: Can voyage optimisation improve CII?
A: Operational measures such as speed and arrival planning, reduced waiting, hull and propeller condition and efficient machinery use can affect carbon intensity, subject to the vessel and trade.

## Predictive Maintenance at Sea: A Practical Starting Point

Predictive maintenance is valuable when it changes a maintenance decision early enough to prevent failure or unnecessary work. A dashboard full of anomalies is not a maintenance strategy.

Canonical URL: https://zeaclub.com/resources/zea-notes/predictive-maintenance-shipping
Reviewed: 2026-07-12

### Start with the failure mode

Choose equipment where failure is costly, data is available and an action is possible. Define the degradation mechanism, useful signals, lead time, false-alarm tolerance and responsible engineer.

### Use more than sensor data

Temperature, pressure, vibration, load, fuel, electrical and alarm data become more useful when combined with running hours, maintenance history, operating mode, ambient conditions and engineer observations.

### Rules, models and AI

Threshold rules are understandable and often effective. Statistical baselines can identify drift. Machine-learning models may discover complex patterns but require representative data and monitoring. Generative AI can summarise context; it should not fabricate a diagnosis.

### Shipboard realities

Connectivity is intermittent, sensors fail, equipment is modified and vessels operate across changing loads and climates. Edge processing, data buffering, compression and clear quality flags are important. Alerts must be prioritised to avoid alarm fatigue.

### A staged Zea IoT roadmap

Begin with data ingestion and equipment context, then descriptive health views, rule-based exceptions, engineer feedback and finally validated predictive models. Integrate work orders with the existing planned-maintenance system rather than creating a second uncontrolled maintenance record.

### Frequently asked questions

Q: What is predictive maintenance on a ship?
A: It uses condition and operational data to estimate developing equipment problems and support maintenance before functional failure.

Q: Does predictive maintenance replace a PMS?
A: No. It should inform and integrate with the planned-maintenance and engineering process.

Q: What is the biggest implementation risk?
A: Poor data context and excessive false alarms can destroy trust even when the underlying technology is sophisticated.

## How Shipbrokers Work—and Where Digital Tools Actually Help

Shipbroking is a relationship business built on information, timing and judgement. Software is useful when it protects those strengths rather than forcing every negotiation into a rigid form.

Canonical URL: https://zeaclub.com/resources/zea-notes/shipbroker-digital-workflow
Reviewed: 2026-07-12

### The broker’s commercial role

A chartering broker connects cargo opportunities and vessel positions, understands market context, communicates offers and counteroffers, clarifies terms and helps parties reach a fixture. Sale-and-purchase, bunker and commodity brokers work in related but distinct markets.

### The information problem

Positions, cargoes, rates, restrictions and counterpart preferences arrive through email, messaging, calls and market circulars. The same opportunity can appear in multiple forms. Valuable context may live only in a broker's memory.

### What software can organise

A broker workspace can capture cargo and tonnage lists, normalise key fields, match opportunities, track negotiations, preserve versions, manage relationships and hand confirmed terms into post-fixture operations. AI can help extract structured details, but the broker must control interpretation and distribution.

### Confidentiality is product design

Broker data is commercially sensitive. Permissions, private notes, counterparty separation, data-retention rules and model-training controls need to be explicit. A feature that exposes one desk's intelligence to another can destroy trust.

### Zeaclub’s broker opportunity

Separate experiences for chartering, sale-and-purchase, bunker and commodity brokers can share a common identity and workflow layer. The strongest bridge is the fixture handover: agreed terms should become an operational record without repeated manual entry.

### Frequently asked questions

Q: What does a shipbroker do?
A: A shipbroker facilitates maritime commercial transactions by connecting parties, providing market context and supporting negotiation and documentation.

Q: Can AI replace a shipbroker?
A: AI can assist with extraction, matching and market analysis, but negotiation, trust, accountability and nuanced judgement remain human strengths.

Q: What is post-fixture work?
A: It is the operational and administrative work after commercial agreement, including handover, documentation, notices, voyage coordination and settlement support.

## Port Agents: The Operational Link Between Ship and Shore

A good port agent turns local complexity into an executable plan. The role is part coordinator, part information hub and part emergency problem-solver.

Canonical URL: https://zeaclub.com/resources/zea-notes/port-agent-role-workflow
Reviewed: 2026-07-12

### Before arrival

The agent gathers vessel, voyage, cargo, crew, certificate and security information; submits required notifications; coordinates berth prospects, pilots, tugs and terminals; and advises the master and operator on local requirements.

### During the call

The agent supports clearance, cargo operations, supplies, crew changes, medical needs, surveys, repairs, cash-to-master where lawful and other husbandry. Events and documents must be reported promptly because they influence operations, laytime and cost.

### After departure

The agent completes departure formalities, sends final documentation, assembles the Statement of Facts and prepares the final disbursement account with supporting vouchers. Queries may continue long after the ship sails.

### Common digital friction

Operators often request the same vessel data repeatedly, instructions arrive through multiple channels, document versions become unclear and estimates are difficult to compare with final costs. Local portals may not integrate with the operator's system.

### A connected port-call record

Zea OS can give agent, vessel and operator controlled access to one timeline, checklist and document set. The platform should respect agency independence, preserve approvals and make it easy to export a complete port-call file.

### Frequently asked questions

Q: Who appoints a port agent?
A: The owner, charterer, manager or another principal may appoint the agent depending on the charter and commercial arrangement.

Q: What is a PDA?
A: A pro forma disbursement account is the agent's estimate of port-call expenses before or during the call.

Q: What is an FDA?
A: A final disbursement account records the final port-call expenses with supporting documentation.

## Maritime AI: Where It Helps, Where It Fails and How to Govern It

Maritime AI becomes useful when it reduces a defined burden and leaves the user with a clearer, verifiable decision. It becomes dangerous when confident language hides uncertain data.

Canonical URL: https://zeaclub.com/resources/zea-notes/maritime-ai-governance
Reviewed: 2026-07-12

### High-value near-term use cases

Document classification, field extraction, email summarisation, task creation, anomaly explanation, report drafting, knowledge search and calculation assistance can save time because a human can verify the output against source records.

### Harder use cases

Autonomous commercial decisions, legal clause interpretation, safety-critical diagnosis and unrestricted voyage optimisation carry higher consequence and ambiguity. These require stronger models, domain validation, controls and explicit accountability.

### Human in the loop is a workflow

Human review should not be a decorative approval button. The system must show sources, confidence, assumptions, changes and the consequence of acceptance. Reviewers need authority and enough time to challenge the result.

### Data and confidentiality

Shipping records can reveal counterparties, cargoes, rates, vessel positions, incidents and personal information. Vendors should disclose data location, retention, subprocessors, model-training use, access controls and deletion processes.

### Zea Intelligence principles

Zea Intelligence should assist, not impersonate certainty. Every material output should be traceable to source data. The platform should support private enterprise models and integration with specialist intelligence providers where appropriate.

### Frequently asked questions

Q: What are common AI uses in shipping?
A: Common uses include document extraction, communications triage, voyage and fleet analytics, maintenance anomaly detection, reporting and decision support.

Q: Can AI interpret a charter party?
A: It can assist with clause search and summarisation, but contractual interpretation and claims should be reviewed by qualified people with the complete context.

Q: What is human-in-the-loop AI?
A: It is a system in which people review, correct or approve model outputs at defined decision points, supported by visible sources and audit history.

## Choosing Maritime Software: A Buyer’s Checklist

The best maritime software is not the product with the longest feature list. It is the system that improves the target workflow, fits the company’s operating model and remains governable after implementation.

Canonical URL: https://zeaclub.com/resources/zea-notes/choose-maritime-software
Reviewed: 2026-07-12

### Define the category first

Commercial VMS products, ship-management ERP, market-intelligence platforms, maritime communications tools, crew systems, maintenance platforms and payment services solve different problems. Build a process map before building a vendor shortlist.

### Evaluate the live workflow

Ask vendors to demonstrate your own scenario with realistic data: a fixture changes, an ETA slips, a certificate expires, a claim is disputed or an invoice needs approval. Observe how many screens, exports and manual hand-offs are required.

### Integration and data ownership

Confirm APIs, webhooks, export formats, master-data ownership, identity management and exit arrangements. A platform that imports easily but cannot return complete records creates long-term risk.

### Implementation reality

Request a named implementation plan, responsibilities, migration scope, configuration limits, training, support model and measurable success criteria. Include user adoption—not only technical go-live.

### Competitor landscape

Depending on scope, buyers may review Veson IMOS or VMS, Danaos, ShipNet, MariApps, Sedna, Marcura, ZeroNorth, OrbitMI, Nautilus Labs, Kpler, MarTrust, ShipMoney and other specialist platforms. Competitor pages should explain category and fit rather than use exaggerated attack copy.

### A Zeaclub fit statement

Zeaclub is best presented where the company needs a modern, modular operating layer connecting stakeholders, vessel context, documents, tasks and financial workflows. It should be transparent about the capabilities delivered natively and those delivered through integrations or regulated partners.

### Frequently asked questions

Q: What is the difference between maritime ERP and VMS?
A: A maritime ERP often covers broader company and ship-management functions, while a VMS focuses on commercial voyage estimation, execution and settlement. Product scopes vary.

Q: Should we replace spreadsheets first?
A: Replace the workflows where spreadsheets create repeated entry, version conflict or control risk. Some analytical spreadsheets remain useful when governed and connected.

Q: How should we compare vendors?
A: Use the same workflow, data and scoring criteria for each vendor, including integration, security, implementation, adoption and exit.

# Maritime glossary

## Chartering and Commercial

### Affreightment
The hiring of vessel capacity to carry cargo, commonly through a voyage charter, time charter or contract of affreightment.
Canonical URL: https://zeaclub.com/resources/glossary/affreightment

### Bareboat Charter
An arrangement in which the charterer takes possession and operational responsibility for the vessel, generally without crew or technical management from the owner.
Canonical URL: https://zeaclub.com/resources/glossary/bareboat-charter

### Brokerage Commission
A percentage or agreed amount payable to a broker for facilitating a maritime transaction.
Canonical URL: https://zeaclub.com/resources/glossary/brokerage-commission

### Bunker Adjustment Factor (BAF)
A freight adjustment intended to reflect changes in bunker-fuel cost.
Canonical URL: https://zeaclub.com/resources/glossary/bunker-adjustment-factor-baf

### Charter Party
The contract setting out the terms on which a vessel or its capacity is hired.
Canonical URL: https://zeaclub.com/resources/glossary/charter-party

### Charterer
The party that hires a vessel or its cargo-carrying capacity under a charter party.
Canonical URL: https://zeaclub.com/resources/glossary/charterer

### Contract of Affreightment (COA)
An agreement to carry a series or quantity of cargoes over a period, without necessarily identifying one vessel for every shipment.
Canonical URL: https://zeaclub.com/resources/glossary/contract-of-affreightment-coa

### Deadfreight
Compensation that may be payable when the charterer supplies less cargo than the quantity contractually committed, subject to the charter party.
Canonical URL: https://zeaclub.com/resources/glossary/deadfreight

### Fixture
The commercial agreement of a vessel or cargo employment on negotiated terms.
Canonical URL: https://zeaclub.com/resources/glossary/fixture

### Fixture Recap
A summary of the principal terms agreed during a fixture, used pending or alongside the formal charter party.
Canonical URL: https://zeaclub.com/resources/glossary/fixture-recap

### Freight
The payment for carrying cargo, commonly under a voyage charter or bill of lading arrangement.
Canonical URL: https://zeaclub.com/resources/glossary/freight

### Freight Derivative (FFA)
A financial contract settled against freight-market indices, used to manage or take exposure to freight rates.
Canonical URL: https://zeaclub.com/resources/glossary/freight-derivative-ffa

### Laycan
The agreed date range within which the vessel must be ready and the charterer may cancel if the vessel misses the cancelling date, subject to the contract.
Canonical URL: https://zeaclub.com/resources/glossary/laycan

### Off-hire
A period under a time charter when hire may cease to accrue because the vessel is unavailable for a contractually specified reason.
Canonical URL: https://zeaclub.com/resources/glossary/off-hire

### On-hire Survey
A survey used to record vessel condition and quantities, often bunkers, at delivery into a time charter.
Canonical URL: https://zeaclub.com/resources/glossary/on-hire-survey

### Owner
The registered, beneficial or disponent owner contextually responsible for making the vessel available.
Canonical URL: https://zeaclub.com/resources/glossary/owner

### Subjects
Conditions that must be lifted or satisfied before a negotiation becomes fully binding, depending on governing law and wording.
Canonical URL: https://zeaclub.com/resources/glossary/subjects

### Time Charter
A charter under which the charterer hires the vessel for a period while the owner generally retains technical operation and crew.
Canonical URL: https://zeaclub.com/resources/glossary/time-charter

### Time Charter Equivalent (TCE)
A measure converting voyage revenue and voyage expenses into a daily earnings figure for comparison.
Canonical URL: https://zeaclub.com/resources/glossary/time-charter-equivalent-tce

### Voyage Charter
A charter for carriage of cargo on one or more specified voyages, usually in return for freight.
Canonical URL: https://zeaclub.com/resources/glossary/voyage-charter

## Voyage Operations and Port Calls

### Actual Time of Arrival (ATA)
The recorded time at which a vessel actually arrives at the defined location or port reference point.
Canonical URL: https://zeaclub.com/resources/glossary/actual-time-of-arrival-ata

### Actual Time of Berthing (ATB)
The recorded time at which the vessel is all fast or otherwise considered berthed under the relevant operational definition.
Canonical URL: https://zeaclub.com/resources/glossary/actual-time-of-berthing-atb

### Estimated Time of Arrival (ETA)
The expected time a vessel will arrive at a destination or defined reporting point.
Canonical URL: https://zeaclub.com/resources/glossary/estimated-time-of-arrival-eta

### Estimated Time of Berthing (ETB)
The expected time at which a vessel will berth.
Canonical URL: https://zeaclub.com/resources/glossary/estimated-time-of-berthing-etb

### Estimated Time of Completion (ETC)
The expected time at which cargo or another operation will finish.
Canonical URL: https://zeaclub.com/resources/glossary/estimated-time-of-completion-etc

### Estimated Time of Departure (ETD)
The expected time at which the vessel will depart.
Canonical URL: https://zeaclub.com/resources/glossary/estimated-time-of-departure-etd

### Husbandry Services
Non-cargo port services such as crew changes, provisions, spares, medical attendance, cash delivery and repairs.
Canonical URL: https://zeaclub.com/resources/glossary/husbandry-services

### Just-in-Time Arrival
Coordinating vessel speed and port readiness so the ship arrives when berth, services and cargo operations are genuinely available.
Canonical URL: https://zeaclub.com/resources/glossary/just-in-time-arrival

### Noon Report
A regular vessel report containing navigation, weather, consumption, performance and operational information, traditionally sent around noon ship time.
Canonical URL: https://zeaclub.com/resources/glossary/noon-report

### Port Agent
The local representative coordinating ship clearance, port services, communications and documentation for a principal.
Canonical URL: https://zeaclub.com/resources/glossary/port-agent

### Port Call
The complete operational period associated with a vessel visiting a port, from pre-arrival planning through departure and close-out.
Canonical URL: https://zeaclub.com/resources/glossary/port-call

### Pro Forma Disbursement Account (PDA)
An advance estimate of the port costs expected for a vessel call.
Canonical URL: https://zeaclub.com/resources/glossary/pro-forma-disbursement-account-pda

### Final Disbursement Account (FDA)
The final account of port-call expenses, normally supported by invoices and vouchers.
Canonical URL: https://zeaclub.com/resources/glossary/final-disbursement-account-fda

### Statement of Facts (SOF)
A chronological record of events during a port call, widely used as evidence for operations and laytime analysis.
Canonical URL: https://zeaclub.com/resources/glossary/statement-of-facts-sof

### Ship-to-Ship Transfer (STS)
The transfer of cargo, commonly liquid bulk, directly between vessels under controlled procedures.
Canonical URL: https://zeaclub.com/resources/glossary/ship-to-ship-transfer-sts

### Tug Assistance
The use of tugboats to support vessel manoeuvring, berthing, unberthing or safety.
Canonical URL: https://zeaclub.com/resources/glossary/tug-assistance

### Under Keel Clearance (UKC)
The vertical distance between the lowest part of the vessel and the seabed or controlling depth.
Canonical URL: https://zeaclub.com/resources/glossary/under-keel-clearance-ukc

### Weather Routing
The use of forecast and vessel data to select or adjust a route considering safety, time, fuel and operating constraints.
Canonical URL: https://zeaclub.com/resources/glossary/weather-routing

## Laytime, Claims and Documentation

### All Fast
The operational time when all required mooring lines are secured, often used as a port-event timestamp.
Canonical URL: https://zeaclub.com/resources/glossary/all-fast

### Demurrage
Agreed compensation that may be payable when counted laytime exceeds the contractual allowance.
Canonical URL: https://zeaclub.com/resources/glossary/demurrage

### Despatch
An agreed payment that may be due when cargo operations use less than the allowed laytime.
Canonical URL: https://zeaclub.com/resources/glossary/despatch

### Laytime
The contractually allowed time for loading or discharging cargo.
Canonical URL: https://zeaclub.com/resources/glossary/laytime

### Notice of Readiness (NOR)
A notice stating that the vessel is ready in the contractual sense to load or discharge.
Canonical URL: https://zeaclub.com/resources/glossary/notice-of-readiness-nor

### Once on Demurrage, Always on Demurrage
A common shorthand for a principle that certain laytime exceptions may no longer interrupt time after demurrage begins, subject to the contract and law.
Canonical URL: https://zeaclub.com/resources/glossary/once-on-demurrage-always-on-demurrage

### Reversible Laytime
An arrangement allowing loading and discharging laytime allowances to be combined.
Canonical URL: https://zeaclub.com/resources/glossary/reversible-laytime

### Time Bar
A contractual deadline by which a claim and required supporting documents must be submitted.
Canonical URL: https://zeaclub.com/resources/glossary/time-bar

### Timesheet
A calculation sheet recording counted and excluded time for laytime analysis.
Canonical URL: https://zeaclub.com/resources/glossary/timesheet

### Bill of Lading
A transport document that can evidence receipt of cargo, the contract of carriage and, in negotiable form, rights relating to delivery.
Canonical URL: https://zeaclub.com/resources/glossary/bill-of-lading

### Cargo Manifest
A list or declaration describing cargo carried on a vessel.
Canonical URL: https://zeaclub.com/resources/glossary/cargo-manifest

### Mate’s Receipt
A receipt issued on behalf of the vessel acknowledging cargo loaded, often noting apparent condition.
Canonical URL: https://zeaclub.com/resources/glossary/mates-receipt

### Letter of Protest
A formal notice recording an objection, discrepancy or event that may affect rights or claims.
Canonical URL: https://zeaclub.com/resources/glossary/letter-of-protest

### Sea Protest
A formal declaration by the master concerning extraordinary events or conditions during a voyage, subject to local procedure.
Canonical URL: https://zeaclub.com/resources/glossary/sea-protest

### Cargo Shortage Claim
A claim alleging that delivered cargo quantity is less than the contractual or documented quantity.
Canonical URL: https://zeaclub.com/resources/glossary/cargo-shortage-claim

### General Average
A maritime-law principle under which extraordinary sacrifice or expenditure made for common safety may be shared among interests in the maritime adventure.
Canonical URL: https://zeaclub.com/resources/glossary/general-average

## Vessels, Cargoes and Markets

### Bulk Carrier
A ship designed primarily to carry unpackaged dry bulk cargo such as grain, coal or ore.
Canonical URL: https://zeaclub.com/resources/glossary/bulk-carrier

### Capesize
A large dry-bulk vessel category typically too large for the traditional Panama Canal and associated with long-haul ore and coal trades.
Canonical URL: https://zeaclub.com/resources/glossary/capesize

### Panamax
A vessel-size category historically defined by the dimensional limits of the original Panama Canal locks.
Canonical URL: https://zeaclub.com/resources/glossary/panamax

### Supramax
A geared dry-bulk vessel segment larger than typical Handymax tonnage and used across diverse ports and cargoes.
Canonical URL: https://zeaclub.com/resources/glossary/supramax

### Handysize
A smaller, versatile dry-bulk vessel segment suited to ports with draft or infrastructure limits.
Canonical URL: https://zeaclub.com/resources/glossary/handysize

### Tanker
A vessel designed to carry liquid cargoes in bulk.
Canonical URL: https://zeaclub.com/resources/glossary/tanker

### VLCC
Very Large Crude Carrier, generally used for long-haul crude-oil transport.
Canonical URL: https://zeaclub.com/resources/glossary/vlcc

### LNG Carrier
A specialised vessel designed to transport liquefied natural gas at cryogenic temperature.
Canonical URL: https://zeaclub.com/resources/glossary/lng-carrier

### LPG Carrier
A vessel designed to carry liquefied petroleum gases or related pressurised or refrigerated gas cargoes.
Canonical URL: https://zeaclub.com/resources/glossary/lpg-carrier

### Container Ship
A vessel designed to carry standardised intermodal containers.
Canonical URL: https://zeaclub.com/resources/glossary/container-ship

### General Cargo Ship
A ship carrying breakbulk, packaged, project or mixed cargo that is not solely containerised or bulk.
Canonical URL: https://zeaclub.com/resources/glossary/general-cargo-ship

### Deadweight Tonnage (DWT)
The total weight a vessel can carry, including cargo, bunkers, water, stores, crew and effects, at the relevant load line.
Canonical URL: https://zeaclub.com/resources/glossary/deadweight-tonnage-dwt

### Gross Tonnage (GT)
A dimensionless measure based on the internal volume of a ship, used for regulatory and administrative purposes.
Canonical URL: https://zeaclub.com/resources/glossary/gross-tonnage-gt

### Draft
The vertical distance from the waterline to the lowest part of the hull, varying with loading and water density.
Canonical URL: https://zeaclub.com/resources/glossary/draft

### Freeboard
The vertical distance from the waterline to the relevant deck line.
Canonical URL: https://zeaclub.com/resources/glossary/freeboard

### Bunker Fuel
Fuel supplied for use by a ship, including conventional and alternative marine fuels.
Canonical URL: https://zeaclub.com/resources/glossary/bunker-fuel

### Draught Survey
A method of estimating cargo weight by comparing vessel displacement before and after loading or discharging.
Canonical URL: https://zeaclub.com/resources/glossary/draught-survey

## Technology, Data and Intelligence

### Automatic Identification System (AIS)
A radio-based system through which vessels broadcast identity, position and navigation-related messages for safety and situational awareness.
Canonical URL: https://zeaclub.com/resources/glossary/automatic-identification-system-ais

### Terrestrial AIS
AIS messages received by shore-based stations within radio range.
Canonical URL: https://zeaclub.com/resources/glossary/terrestrial-ais

### Satellite AIS
AIS messages collected by satellites, extending vessel visibility beyond coastal receiver range.
Canonical URL: https://zeaclub.com/resources/glossary/satellite-ais

### Maritime Mobile Service Identity (MMSI)
A nine-digit identifier assigned to a ship station, coast station or related maritime radio service.
Canonical URL: https://zeaclub.com/resources/glossary/maritime-mobile-service-identity-mmsi

### Application Programming Interface (API)
A defined software interface that allows systems to exchange data or trigger functions.
Canonical URL: https://zeaclub.com/resources/glossary/application-programming-interface-api

### Webhook
An automated message sent from one software system to another when a specified event occurs.
Canonical URL: https://zeaclub.com/resources/glossary/webhook

### Digital Twin
A digital representation linked to the condition, behaviour or data of a physical asset or process and used to support decisions.
Canonical URL: https://zeaclub.com/resources/glossary/digital-twin

### Edge Agent
Software running near the data source, such as an approved vessel computer, to collect, process, buffer and securely transmit selected data.
Canonical URL: https://zeaclub.com/resources/glossary/edge-agent

### Internet of Things (IoT)
A network of connected physical devices and sensors that collect and exchange data.
Canonical URL: https://zeaclub.com/resources/glossary/internet-of-things-iot

### NMEA 0183
A widely used maritime data-communication standard for transmitting navigation and instrument messages.
Canonical URL: https://zeaclub.com/resources/glossary/nmea-0183

### IEC 61162
A family of international standards for digital interfaces used with shipboard navigation and radio-communication equipment.
Canonical URL: https://zeaclub.com/resources/glossary/iec-61162

### Modbus
An industrial communication protocol commonly used to exchange data with machinery, sensors and control devices.
Canonical URL: https://zeaclub.com/resources/glossary/modbus

### OPC UA
A platform-independent industrial interoperability standard for secure, structured data exchange.
Canonical URL: https://zeaclub.com/resources/glossary/opc-ua

### Data Provenance
Information showing where data came from, how it changed and which source or process produced it.
Canonical URL: https://zeaclub.com/resources/glossary/data-provenance

### Audit Trail
A chronological record of actions, changes, approvals and access that supports accountability and review.
Canonical URL: https://zeaclub.com/resources/glossary/audit-trail

### Human in the Loop
A design in which people review, correct or approve automated or AI-generated outputs at defined points.
Canonical URL: https://zeaclub.com/resources/glossary/human-in-the-loop

### Predictive Maintenance
The use of condition and operational data to anticipate developing failures and support timely maintenance decisions.
Canonical URL: https://zeaclub.com/resources/glossary/predictive-maintenance

### Planned Maintenance System (PMS)
A structured system for scheduling, recording and controlling vessel maintenance tasks.
Canonical URL: https://zeaclub.com/resources/glossary/planned-maintenance-system-pms

### Voyage Management System (VMS)
Software supporting commercial voyage estimation, planning, execution, reporting and settlement.
Canonical URL: https://zeaclub.com/resources/glossary/voyage-management-system-vms

### Maritime ERP
An enterprise system integrating maritime operational, technical, financial, procurement, crewing or related business records.
Canonical URL: https://zeaclub.com/resources/glossary/maritime-erp

### Maritime Operating System
A connected workflow and data layer intended to coordinate vessels, operations, people, documents and related actions across maritime stakeholders.
Canonical URL: https://zeaclub.com/resources/glossary/maritime-operating-system

## Regulation, Safety and Sustainability

### Carbon Intensity Indicator (CII)
An IMO annual operational carbon-intensity measure for covered ships, producing ratings from A to E.
Canonical URL: https://zeaclub.com/resources/glossary/carbon-intensity-indicator-cii

### Energy Efficiency Existing Ship Index (EEXI)
An IMO technical efficiency measure comparing an existing ship’s attained value with the required value for its type and size.
Canonical URL: https://zeaclub.com/resources/glossary/energy-efficiency-existing-ship-index-eexi

### Energy Efficiency Design Index (EEDI)
A technical design-efficiency standard for qualifying new ships.
Canonical URL: https://zeaclub.com/resources/glossary/energy-efficiency-design-index-eedi

### EU Emissions Trading System (EU ETS)
The European cap-and-trade system extended to covered maritime emissions from 2024.
Canonical URL: https://zeaclub.com/resources/glossary/eu-emissions-trading-system-eu-ets

### EU Allowance (EUA)
A tradable allowance used for compliance under the EU Emissions Trading System.
Canonical URL: https://zeaclub.com/resources/glossary/eu-allowance-eua

### FuelEU Maritime
An EU regulation targeting the greenhouse-gas intensity of energy used on board covered ships and promoting renewable and low-carbon fuels.
Canonical URL: https://zeaclub.com/resources/glossary/fueleu-maritime

### Monitoring, Reporting and Verification (MRV)
A regulated process for measuring, reporting and independently verifying emissions or related data.
Canonical URL: https://zeaclub.com/resources/glossary/monitoring-reporting-and-verification-mrv

### International Safety Management Code (ISM Code)
An international framework requiring companies to establish a safety-management system for safe ship operation and pollution prevention.
Canonical URL: https://zeaclub.com/resources/glossary/international-safety-management-code-ism-code

### International Ship and Port Facility Security Code (ISPS Code)
A security framework for ships and port facilities under SOLAS.
Canonical URL: https://zeaclub.com/resources/glossary/international-ship-and-port-facility-security-code-isps-code

### International Convention for the Prevention of Pollution from Ships (MARPOL)
The principal international convention addressing prevention of pollution from ships.
Canonical URL: https://zeaclub.com/resources/glossary/international-convention-for-the-prevention-of-pollution-from-ships-marpol

### Safety of Life at Sea Convention (SOLAS)
The principal international treaty setting minimum safety standards for construction, equipment and operation of ships.
Canonical URL: https://zeaclub.com/resources/glossary/safety-of-life-at-sea-convention-solas

### Standards of Training, Certification and Watchkeeping (STCW)
The international convention and code setting minimum standards for seafarer training, certification and watchkeeping.
Canonical URL: https://zeaclub.com/resources/glossary/standards-of-training-certification-and-watchkeeping-stcw

### Maritime Labour Convention (MLC, 2006)
The ILO convention consolidating standards for seafarers’ employment, living and working conditions.
Canonical URL: https://zeaclub.com/resources/glossary/maritime-labour-convention-mlc-2006

### Safety Management System (SMS)
The documented company system used to implement safety and environmental policy under the ISM framework.
Canonical URL: https://zeaclub.com/resources/glossary/safety-management-system-sms

### Port State Control (PSC)
Inspection of foreign ships in national ports to verify compliance with applicable international standards.
Canonical URL: https://zeaclub.com/resources/glossary/port-state-control-psc

### Flag State
The state whose flag a ship is entitled to fly and which exercises regulatory jurisdiction over the vessel.
Canonical URL: https://zeaclub.com/resources/glossary/flag-state

### Classification Society
An organisation that develops technical rules and surveys ships for classification and, when authorised, statutory functions.
Canonical URL: https://zeaclub.com/resources/glossary/classification-society

### Maritime Single Window (MSW)
A digital environment used by public authorities to receive and exchange ship-clearance information for arrival, stay and departure.
Canonical URL: https://zeaclub.com/resources/glossary/maritime-single-window-msw

### FAL Convention
The IMO Convention on Facilitation of International Maritime Traffic, intended to simplify and harmonise formalities, documents and procedures.
Canonical URL: https://zeaclub.com/resources/glossary/fal-convention

## Crew, Careers and Payments

### Certificate of Competency (CoC)
A certificate confirming that a seafarer is qualified for specified functions, capacities and limitations under the applicable STCW and administration framework.
Canonical URL: https://zeaclub.com/resources/glossary/certificate-of-competency-coc

### Certificate of Proficiency (CoP)
A certificate confirming completion or competence for specified training or duties under the applicable framework.
Canonical URL: https://zeaclub.com/resources/glossary/certificate-of-proficiency-cop

### Seafarer’s Employment Agreement (SEA)
The employment agreement setting out a seafarer’s terms and conditions in accordance with applicable law and the MLC framework.
Canonical URL: https://zeaclub.com/resources/glossary/seafarers-employment-agreement-sea

### Seaman’s Book
A seafarer identity or service record document issued by an authorised administration, with form and legal effect varying by country.
Canonical URL: https://zeaclub.com/resources/glossary/seamans-book

### Sea Service
Documented time and duties served on board, used for career, certification and employment purposes.
Canonical URL: https://zeaclub.com/resources/glossary/sea-service

### Safe Manning Document
A document issued by the flag administration stating the minimum safe manning required for a ship.
Canonical URL: https://zeaclub.com/resources/glossary/safe-manning-document

### Crew Allotment
An authorised portion of a seafarer’s wages paid to a nominated person or account.
Canonical URL: https://zeaclub.com/resources/glossary/crew-allotment

### Repatriation
The return of a seafarer to the entitled destination under the employment and MLC framework.
Canonical URL: https://zeaclub.com/resources/glossary/repatriation

### Manning Agency
A company involved in recruiting, placing or managing seafarers for ship employment, subject to applicable regulation.
Canonical URL: https://zeaclub.com/resources/glossary/manning-agency

### Crew Change
The coordinated sign-on and sign-off of seafarers, including travel, immigration, medical and handover requirements.
Canonical URL: https://zeaclub.com/resources/glossary/crew-change

### Know Your Customer (KYC)
The process by which a regulated provider verifies a customer’s identity and risk profile.
Canonical URL: https://zeaclub.com/resources/glossary/know-your-customer-kyc

### Know Your Business (KYB)
Verification and risk assessment of a business customer, including ownership and control.
Canonical URL: https://zeaclub.com/resources/glossary/know-your-business-kyb

### Anti-Money Laundering (AML)
Laws, controls and procedures intended to prevent and detect money laundering and related financial crime.
Canonical URL: https://zeaclub.com/resources/glossary/anti-money-laundering-aml

### Banking as a Service (BaaS)
A model in which a regulated financial institution provides banking capabilities through technology interfaces to another company’s product.
Canonical URL: https://zeaclub.com/resources/glossary/banking-as-a-service-baas

### Embedded Finance
The integration of financial services into a non-financial software or commercial experience.
Canonical URL: https://zeaclub.com/resources/glossary/embedded-finance

### Stablecoin
A digital token designed to maintain a relatively stable value, commonly by reference to a fiat currency, with risks and regulatory treatment depending on structure and jurisdiction.
Canonical URL: https://zeaclub.com/resources/glossary/stablecoin

### SWIFT
A global financial messaging network used by institutions to communicate payment and other financial instructions.
Canonical URL: https://zeaclub.com/resources/glossary/swift

### Beneficiary
The person or organisation designated to receive a payment.
Canonical URL: https://zeaclub.com/resources/glossary/beneficiary

### Payment Reconciliation
The process of matching payment movements with invoices, payroll, accounts or operational records.
Canonical URL: https://zeaclub.com/resources/glossary/payment-reconciliation