What a VLCC is
A Very Large Crude Carrier, or VLCC, is a crude oil tanker of roughly 200,000 to 320,000 deadweight tonnes. It is the standard vessel for moving crude over long distances where economies of scale outweigh the flexibility of a smaller ship — the Arabian Gulf to Asia route above all, plus West Africa and the US Gulf to Asia and Europe.
VLCCs are too large for the Suez Canal when fully loaded on some drafts and cannot transit the Panama Canal at all in most configurations, which shapes routing around the Cape of Good Hope or through canal systems only when part-loaded or in ballast.
The benchmark route and rate quotation
VLCC freight is most commonly referenced against the Arabian Gulf to China route (AG-China, roughly 270,000 tonnes), quoted on the Worldscale index — a scale expressing the actual freight rate as a percentage of a published flat rate for that specific route. A rate of WS 60 means 60% of the flat rate; it is not a percentage of cargo value.
| Route | Typical basis |
|---|---|
| Arabian Gulf - China | Worldscale, the primary global benchmark |
| West Africa - China | Worldscale, tracked against the AG route |
| US Gulf - China/Asia | Worldscale or lumpsum, longer haul |
| West Africa - Europe | Less common for VLCC; often Suezmax territory |
Voyage charter vs time charter for VLCCs
Most VLCC business is fixed on a voyage charter basis - a single laden voyage at an agreed Worldscale rate, with the owner bearing bunker and port cost risk and the charterer paying freight. Time charters exist, typically for periods of six months to several years, and shift operational cost and scheduling to the charterer in exchange for a daily hire rate.
- Voyage charter: owner controls the voyage, bears bunker risk, is paid freight per the charter party terms.
- Time charter: charterer directs the vessel's employment within the charter's trading limits, pays hire regardless of cargo carried, and bears bunker cost.
- COA (contract of affreightment): a series of voyages over a period at agreed terms, without naming a specific vessel for each lift.
What moves a VLCC fixture
Beyond the headline rate, a VLCC fixture turns on laycan (the loading window), demurrage rate, and the specific charter party form used - the industry has several standard forms (such as Shellvoy or Asbatankvoy) with materially different laytime, demurrage and cancelling provisions.
Vetting is a real constraint on this segment: major oil companies and traders maintain their own approved-vessel lists based on inspection history (SIRE) and management quality (TMSA), and a vessel that fails vetting cannot be fixed to that charterer regardless of rate.
Frequently asked questions
What is the deadweight range for a VLCC?
Roughly 200,000 to 320,000 deadweight tonnes, with 300,000+ dwt vessels sometimes distinguished as ULCC (Ultra Large Crude Carrier), though VLCC is used loosely to cover most of that upper range in commercial practice.
What does Worldscale WS 60 mean?
It means the fixed freight rate is 60% of the Worldscale flat rate published for that specific route and vessel size. It is a rate index, not a discount on cargo value, and the flat rate itself is revised annually.
Can a VLCC transit the Suez Canal?
Only when part-loaded or in ballast, within the canal's current draft limits. A fully laden VLCC generally routes via the Cape of Good Hope.