๐ข Size classes and figures below are the common industry ranges โ an individual ship can sit right
on a boundary, and naming conventions vary a little between owners and brokers. Details last checked 27 Sep 2026.
Bulk Carrier
Dry Cargo๐ Measured in DWT ยท Standard STCW certificates
Carries loose, unpackaged cargo โ iron ore, coal, grain โ in large box-shaped holds. The most numerous ship type in the world fleet by count.
See size classes & details โGeneral Cargo / Multipurpose
Dry Cargo๐ Measured in DWT ยท Standard STCW certificates
The generalist of the fleet โ break-bulk, palletised goods, machinery and project cargo that doesn't fit a container or a bulk hold. Often has its own cargo gear so it can work ports without shore cranes.
See size classes & details โReefer Ship
Dry Cargo๐ Measured in Cubic feet (cbft) ยท Standard STCW certificates
A dedicated refrigerated cargo ship for bananas, fruit and other perishables that need precise temperature control โ largely replaced by reefer containers on box ships, but still used on some fruit trades.
See size classes & details โCrude Oil Tanker
Liquid Cargo๐ Measured in DWT ยท 2 endorsements needed
Carries crude oil in bulk from the oilfield to the refinery, often on long ocean passages with few port calls. Needs a tanker endorsement beyond standard STCW certificates.
See size classes & details โProduct Tanker
Liquid Cargo๐ Measured in DWT ยท 2 endorsements needed
Carries refined products โ petrol, diesel, jet fuel โ from refineries to distribution ports. Smaller and calls more frequently than a crude carrier, on the same family of tanker endorsements.
See size classes & details โChemical Tanker
Liquid Cargo๐ Measured in DWT ยท 2 endorsements needed
Carries bulk liquid chemicals โ everything from vegetable oil to acids and solvents โ often several different, incompatible cargoes at once in separate coated tanks. Needs its own chemical tanker endorsement.
See size classes & details โLNG Carrier
Gas Carriers๐ Measured in Cubic metres (cbm) ยท 3 endorsements needed
Carries natural gas cooled to about โ162ยฐC so it becomes liquid, in insulated tanks, for long-haul export from gas fields to import terminals. Many newer LNG carriers also burn boil-off gas as fuel.
See size classes & details โLPG Carrier
Gas Carriers๐ Measured in Cubic metres (cbm) ยท 2 endorsements needed
Carries propane and butane, either under pressure or refrigerated, from gas fields and refineries to distribution terminals.
See size classes & details โContainer Ship
Container & Vehicle๐ Measured in TEU ยท Standard STCW certificates
Carries standardised containers on fixed liner routes and schedules โ the backbone of world trade and usually the fastest cargo ships at sea.
See size classes & details โCar Carrier (PCTC) / Ro-Ro
Container & Vehicle๐ Measured in CEU ยท Standard STCW certificates
A Pure Car and Truck Carrier (PCTC) drives vehicles on and off through ramps rather than lifting cargo, measured in Car Equivalent Units (CEU) โ roughly the deck space one standard car takes up.
See size classes & details โPlatform Supply Vessel (PSV) / AHTS
Offshore๐ Measured in DWT / Bollard pull ยท 2 endorsements needed
Offshore support vessels that keep oil and gas platforms supplied, or handle anchors and towing for rigs โ a different world from deep-sea trading, with short runs from a supply base to the field.
See size classes & details โFPSO & Drillship
Offshore๐ Measured in Storage / water depth ยท 2 endorsements needed
An FPSO processes and stores oil from subsea wells before offloading to a shuttle tanker, and stays moored on one field for years at a time. A drillship is a self-propelled vessel built to drill new wells in deep water, and often relies on Dynamic Positioning instead of anchors.
See size classes & details โCruise Ship
Passenger๐ Measured in GT / passengers ยท Standard STCW certificates
A floating hotel and entertainment venue as much as a ship โ hundreds of hospitality, entertainment and technical crew alongside the deck and engine departments that run it.
See size classes & details โFerry
Passenger๐ Measured in GT / passengers & vehicles ยท Standard STCW certificates
Carries passengers and often vehicles on fixed, frequent short-sea or coastal routes โ usually round trips measured in hours rather than the weeks-long voyages of deep-sea trading.
See size classes & details โ
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