Barge Carriers: Ships designed to carry barges. Some are fitted to act as full container ships and can carry a varying number of barges and containers at the same time. At present, this class includes two types of vessels, LASH and Sea-Bee.
Bulk Carriers: All vessels designed to carry dry bulk cargo, as well as carriers with bulk cargoes such as grain, ore and oil.
Combination Passenger and Cargo Ships: Ships with a capacity for 13 or more passengers.
Freighters: Breakbulk vessels both refrigerated and unrefrigerated, containerships, partial containerships, roll-on/roll-off vessels, and barge carriers.
Full Containerships: Ships equipped with permanent container cells, with little or no space for other types of cargo.
General Cargo Carriers: Breakbulk freighters, car carriers, cattle carriers, pallet carriers and timber carriers.
Partial Containerships: Multipurpose containerships where one or more but not all compartments are fitted with permanent container cells. Remaining compartments are used for other types of cargo.
Roll-on/Roll-off vessels: Ships custom built to carry wheeled containers or trailers using interior ramps.
Tankers: Ships fitted with tanks to carry liquid cargo such as crude petroleum and petroleum products, chemicals, liquified gasses (LNG & LPG), wine, molasses and similar product tanks.