| VESSEL TYPE | DESCRIPTION |
| LNG Tanker | A tanker for the bulk carriage of Liquefied Natural Gas (primarily methane) in independent insulated tanks. Liquefaction is achieved at temperatures down to -163 deg C |
| CNG Tanker | A tanker for the bulk carriage of Compressed Natural Gas. Cargo remains in gaseous state but is highly compressed |
| Ethylene Tanker | A semi-pressurised LPG tanker specifically for the bulk carriage of ethylene. Cargo is refrigerated at -104 deg C |
| LPG Tanker | A tanker for the bulk carriage of Liquefied Petroleum Gas in insulated tanks, which may be independent or integral. The cargo is pressurised (smaller vessels), refrigerated (larger vessels) or both ('semi-pressurised') to achieve liquefaction. The most common cargoes are ammonia, propane and butane |
| LPG/Chemical Tanker | An LPG tanker additionally capable of the carriage of chemical products as defined in the International Bulk Chemical Code |
| LPG Barge, propelled | A self propelled tanker barge for the bulk carriage of Liquefied Petroleum Gas |
| CO2 Tanker | A tanker for the bulk carriage of liquefied carbon dioxide |
| Molten Sulphur Tanker | A tanker for the bulk carriage of molten sulphur in insulated tanks at a high temperature |
| Chemical Tanker | A tanker for the bulk carriage of chemical cargoes, lube oils, vegetable/animal oils and other chemicals as defined in the International Bulk Chemical Code. Tanks are coated with suitable materials which are inert to the cargo |
| Parcels Tanker | A chemical tanker with many segregated cargo tanks to carry multiple grades of chemicals as defined in the International Bulk Chemical Code. Typically these can have between 10 and 60 different tanks |
| Chemical Tanker Barge, propelled | An self propelled tanker barge for the bulk carriage of chemical cargoes, lube oils, vegetable/animal oils and other chemicals as defined in the International Bulk Chemical Code |
| Chemical/Products Tanker | A chemical tanker additionally capable of the carriage of clean petroleum products |
| Chemical/Products Tanker Barge, propelled | An self propelled chemical tanker barge additionally capable of the carriage of clean petroleum products |
| Wine Tanker | A cargo ship designed for the bulk transport of Wine in tanks. Tanks will be stainless steel or lined. New vessels will be classified as chemical carriers |
| Vegetable Oil Tanker | A cargo ship designed for the bulk transport of Vegetable oils in tanks. Tanks will be stainless steel or lined. New vessels will be classified as chemical carriers |
| Edible Oil Tanker | A cargo ship designed for the bulk transport of Edible Oils in tanks. Tanks will be stainless steel or lined. New vessels will be classified as chemical carriers |
| Beer Tanker | A tanker for the bulk carriage of beer |
| Latex Tanker | A tanker for the bulk carriage of latex |
| Fruit Juice Tanker | A tanker for the bulk carriage of fruit juice concentrate in insulated tanks |
| Shuttle Tanker | A tanker for the bulk carriage of crude oil specifically for operation between offshore terminals and refineries. Is typically fitted with bow loading facilities |
| Crude Oil Tanker | A tanker for the bulk carriage of crude oil |
| Crude/Oil Products Tanker | A tanker for the bulk carriage of crude oil but also for carriage of refined oil products |
| Products Tanker | A tanker for the bulk carriage of refined petroleum products, either clean or dirty |
| Tanker (unspecified) | A tanker whose cargo is unspecified |
| Products Tanker Barge, propelled | A self propelled tanker barge for the bulk carriage of refined petroleum products, either clean or dirty |
| Asphalt/Bitumen Tanker | A tanker for the bulk carriage of asphalt/bitumen at temperatures between 150 and 200 deg C |
| Coal/Oil Mixture Tanker | A tanker for the bulk carriage of a cargo of coal and oil mixed as a liquid and maintained at high temperatures |
| Water Tanker | A tanker for the bulk carriage of water |
| Water Tanker Barge, propelled | A self propelled tanker barge for the bulk carriage of water |
| Molasses Tanker | A tanker for the bulk carriage of molasses |
| Glue Tanker | A tanker for the bulk carriage of glue |
| Alcohol Tanker | A tanker for the bulk carriage of alcohol |
| Caprolactam Tanker | A tanker for the bulk carriage of caprolactam, a chemical used in the plastics industry for the production of polyamides |
| Bulk Carrier | A single deck cargo vessel with an arrangement of topside ballast tanks for the carriage of bulk dry cargo of a homogeneous nature |
| Bulk Carrier, Laker Only | A single deck cargo vessel with dimensions suited to the limitations of Great Lakes of North America trade, unsuitable for open sea navigation. Hatches are more numerous than standard bulk carriers, and much wider than they are long |
| Bulk Carrier (with Vehicle Decks) | A bulk carrier with movable decks for the additional carriage of new vehicles |
| Bulk Barge, propelled | A self propelled barge with an arrangement of topside ballast tanks for the carriage of bulk dry cargo of a homogeneous nature |
| Ore Carrier | A single deck cargo ship fitted with two longitudinal bulkheads. Ore is carried in the centreline holds only |
| Bulk/Oil Carrier (OBO) | A bulk carrier arranged for the alternative (but not simultaneous) carriage of crude oil |
| Ore/Bulk/Products Carrier | A bulk carrier arranged for the alternative (but not simultaneous) carriage of oil products |
| Ore/Oil Carrier | An ore carrier arranged for the alternative (but not simultaneous) carriage of crude oil |
| Bulk Cargo Carrier, self discharging | A bulk carrier fitted with self trimming holds, a conveyor belt (or similar system) and a boom which can discharge cargo alongside or to shore without the assistance of any external equipment |
| Bulk Cargo Carrier, self discharging, Laker | A Great Lakes bulk carrier fitted with a conveyor belt (or similar system) and a boom which can discharge cargo alongside or to shore without the assistance of any external equipment |
| Bulk Cargo Barge, self discharging, propelled | A self propelled bulk barge fitted with a conveyor belt (or similar system) and a boom which can discharge cargo alongside or to shore without the assistance of any external equipment |
| Cement Carrier | A single deck cargo vessel fitted with pumping arrangements for the carriage of cement in bulk. There are no weather deck hatches. May be self discharging |
| Bulk Cement Barge, propelled | A self propelled barge fitted with pumping arrangements for the carriage of cement in bulk. There are no weather deck hatches. May be self discharging |
| Wood Chips Carrier, self unloading | A single deck cargo vessel with high freeboard for the carriage of wood chips. May be self discharging |
| Urea Carrier | A single deck cargo vessel for the carriage of urea in bulk. May be self discharging |
| Aggregates Carrier | A single deck cargo vessel for the carriage of aggregates in bulk. Also known as a Sand Carrier. May be self discharging |
| Limestone Carrier | A single deck cargo vessel for the carriage of limestone in bulk. There are no weather deck hatches. May be self discharging |
| Refined Sugar Carrier | A single deck cargo vessel for the carriage of refined sugar. Sugar is loaded in bulk and bagged in transit (BIBO - Bulk In - Bag Out) |
| Powder Carrier | A single deck cargo vessel for the carriage of fine powders such as fly ash. There are no weather deck hatches |
| General Cargo Ship (with Ro-Ro facility) | A general cargo ship with the additional capability to be loaded and unloaded by ro-ro access to a limited portion of the cargo space |
| Open Hatch Cargo Ship | A large single deck cargo vessel with full width hatches and boxed holds for the carriage of unitised dry cargo such as forest products and containers. Many are fitted with a gantry crane |
| General Cargo/Tanker (Container/oil/bulk - COB ship) | A general cargo ship with reversible hatch covers; one side is flush and the other is fitted with baffles for use with liquid cargoes. Containers can be carried on the hatch covers in dry cargo mode |
| General Cargo/Tanker | A general cargo ship fitted with tanks for the additional carriage of liquid cargo |
| General Cargo Ship | A single or multi deck cargo vessel for the carriage of various types of dry cargo. Single deck vessels will typically have box shaped holds. Cargo is loaded and unloaded through weather deck hatches |
| General Cargo Barge, propelled | An self propelled barge with a single deck for the carriage of various types of dry cargo |
| Palletised Cargo Ship | A single or multi deck cargo ship loaded and unloaded by way of pallets lift(s). There are no weather deck hatches |
| Deck Cargo Ship | A vessel arranged for carrying unitised cargo on deck only. Access may be by use of a ro-ro ramp |
| General Cargo/Passenger Ship | A general cargo ship with accommodation for the carriage of more than 12 passengers |
| Container Ship (Fully Cellular) | A single deck cargo vessel with boxed holds fitted with fixed cellular guides for the carriage of containers |
| Container Ship (Fully Cellular with Ro-Ro Facility) | A container ship with the additional capability to be loaded and unloaded by ro-ro access to a limited portion of the cargo space |
| Container Barge, propelled | A self propelled cargo vessel with boxed holds fitted with fixed cellular guides for the carriage of containers |
| Passenger/Container Ship | A container ship with accommodation for the carriage of more than 12 passengers |
| Refrigerated Cargo Ship | A multi deck cargo ship for the carriage of refrigerated cargo at various temperatures |
| Ro-Ro Cargo Ship | A single or multi deck cargo ship for the carriage of laden vehicles which are loaded via ramps |
| Rail Vehicles Carrier | A single or multi deck cargo ship with rails for the carriage of rail vehicles which are loaded via ramps |
| Car Carrier | A vehicles carrier for the carriage of new cars which are loaded via ramps |
| Vehicles Carrier | A multi deck cargo ship for the carriage of new cars and trucks which are loaded via ramps |
| Container/Ro-Ro Cargo Ship | A hybrid of a container ship and a ro-ro cargo ship in independent sections |
| Landing Craft | An open deck cargo vessel onto which cargo is loaded and unloaded over a bow door/ramp |
| Passenger/Ro-Ro Ship (Vehicles) | A ro-ro cargo ship with accommodation for more than 12 passengers |
| Passenger/Ro-Ro Ship (Vehicles/Rail) | A ro-ro cargo ship for the additional carriage of rail-vehicles and with accommodation for more than 12 passengers |
| Passenger/Landing Craft | A landing craft certificated to carry more than 12 passengers |
| Passenger/Cruise | A vessel certificated to carry more than 12 passengers, all of whom may be accommodated in cabins |
| Passenger Ship | A vessel certificated to carry more than 12 passengers, some of whom may be accommodated in cabins |
| Livestock Carrier | A cargo vessel arranged for the carriage of livestock |
| Barge Carrier | A cargo vessel arranged for the carriage of purpose built barges (lighters) loaded with cargo. Typically loading is by way of a gantry crane. Also known as Lighter Aboard SHip vessels (LASH) |
| Barge Carrier, semi submersible | A barge carrier which is semi submersible for the float on loading/unloading of the barges |
| Heavy Load Carrier | A cargo vessel able to carry heavy and/or outsized individual cargoes. Cargo may be carried on deck or in holds and may be loaded by crane and/or ro-ro ramps |
| Heavy Load Carrier, semi submersible | A heavy load carrier which is semi submersible for the float on loading/unloading of the cargoes |
| Yacht Carrier, semi submersible | A semi submersible heavy load carrier specifically arranged for the carriage of yachts |
| Nuclear Fuel Carrier | A cargo vessel arranged to carry nuclear fuel in flasks |
| Nuclear Fuel Carrier (with Ro-Ro facility) | A nuclear fuel carrier which is loaded and unloaded by way of a ro-ro ramp |
| Pulp Carrier | A vessel designed for carrying paper pulp |
| Factory Stern Trawler | A stern trawler fitted out with a factory for refrigerating, processing and possibly canning |
| Stern Trawler | A vessel for catching fish by trawling with nets handled over the stern |
| Trawler | A vessel for catching fish by trawling with nets handled over the side |
| Fishing Vessel | A vessel for catching fish whose method is other than trawling. Includes long liners, purse seiners etc |
| Fish Factory Ship | A vessel fitted out with a factory for refrigerating, processing and possibly canning. The catch is from other vessels |
| Fish Carrier | A refrigerated cargo vessel for the carriage of fish at a single temperature |
| Live Fish Carrier (Well Boat) | A vessel for the carriage of live fish in water tanks |
| Fish Farm Support Vessel | A vessel for the support of fish farming activities |
| Fishery Patrol Vessel | A vessel for the protection of fish stocks and fishing vessels |
| Fishery Research Vessel | A vessel for research into fish stocks and conservation. The vessel may catch fish for scientific purposes |
| Fishery Support Vessel | A vessel for supporting fishing activities |
| Seal Catcher | A vessel equipped for catching seals |
| Whale Catcher | A vessel equipped for catching whales |
| Kelp Dredger | A vessel equipped for harvesting kelp seaweed |
| Pearl Shells Carrier | A vessel equipped for the carriage of pearl shells |
| Crew/Supply Vessel | A typically high speed vessel primarily for the transportation of crew to offshore facilities; may also have limited stores carriage capability on an open deck |
| Pipe Carrier | A platform supply ship equipped with increased scantlings & longer deck space for the transportation of pipes |
| Platform Supply Ship | A vessel for the transportation of stores and goods to offshore platforms on an open deck, typically at the stern. May also be fitted with specialist under deck tanks for water, cement and/or drilling mud |
| Anchor Handling Tug Supply | An offshore tug/supply ship equipped with a high bollard pull and a stern roller for anchor handling |
| Offshore Tug/Supply Ship | A vessel for the transportation of stores and goods to offshore platforms on an open stern deck and equipped with a towing facility |
| Offshore Support Vessel | A single or multi functional offshore support vessel |
| Diving Support Vessel | A vessel primarily equipped with decompression chambers for air dive operation. Does not include vessels which can only operate submersibles |
| Accommodation Ship | A vessel providing accommodation for those working on other vessels and installations |
| Drilling Ship | A vessel primarily equipped for offshore drilling operations. May also be able to obtain cores for research purposes |
| Pipe Layer Crane Vessel | A pipe layer also equipped with a large crane or derrick |
| Pipe Layer | A vessel primarily equipped to lay solid or flexible pipes on the sea bed |
| Production Testing Vessel | A vessel primarily equipped for testing the quality and amount of oil produced by a well |
| FPSO, Oil | A vessel with the capability to control production rates from an oilfield and to store oil produced prior to its transfer to another vessel for transportation. May be self or non propelled |
| FPSO, Gas | A vessel with the capability to control production rates from an gas field and to store gas produced prior to its transfer to another vessel for transportation. May be self or non propelled |
| Well Stimulation Vessel | A vessel primarily equipped to maximize oil production from a well |
| Standby Safety Vessel | A vessel primarily equipped to perform safety standby duties. Will be fitted with accommodation and facilities for the rescue, reception and initial care of survivors from offshore installations accidents |
| FSO, Oil | A tanker purpose built or converted to store oil produced from a field prior to its transfer to another vessel for transportation. May be self or non propelled. This type does not include vessels which are temporarily being used for storage of oil |
| FSO, Gas | A tanker purpose built or converted to store gas produced from a field prior to its transfer to another vessel for transportation. May be self or non propelled. This type does not include vessels which are temporarily being used for storage of gas |
| Trenching Support Vessel | A vessel primarily equipped to operate submersibles for digging trenches on the sea bed for pipes and cables |
| Pipe Burying Vessel | A vessel equipped to carry small stones and aggregates and to deliver them via a flexible fall pipe system to bury pipes and cables on the sea bed |
| Research Survey Vessel | A vessel equipped for research and/or survey (e.g. geophysical, hydrographic) |
| Tug | A vessel equipped with a towing winch to tow other vessels (either in harbour or in open sea) and with manoeuvring capabilities to assist vessels to berth/unberth in ports. May also be able to push barges and other vessels |
| Pusher Tug | A vessel equipped to push cargo carrying barges and pontoons. May be articulated to work with specifically designed barge(s) |
| Bucket Dredger | A vessel equipped to obtain material from the sea bed by use of circulating buckets. The material may be carried on board, transferred to other vessels, pumped ashore or deposited elsewhere using a spray |
| Cutter Suction Dredger | A vessel equipped to obtain material from the sea bed by use of a cutter wheel, which loosens the material, and a suction pipe. The material may be carried on board, transferred to other vessels, pumped ashore or deposited elsewhere using a spray |
| Grab Dredger | A vessel equipped to obtain material from the sea bed by use of a grab or backhoe. The material may be carried on board, transferred to other vessels, pumped ashore or deposited elsewhere using a spray |
| Suction Dredger | A vessel equipped to obtain material from the sea bed by use of a suction pipe. The material may be carried on board, transferred to other vessels, pumped ashore or deposited elsewhere using a spray |
| Dredger (unspecified) | A vessel equipped to obtain material from the sea bed by an unspecified means. The material may be carried on board, transferred to other vessels, pumped ashore or deposited elsewhere using a spray |
| Water Jet Dredger | A vessel equipped to inject water into settled sediment which then moves under the influence of gravity and/or density gradients |
| Hopper/Bucket Dredger | A vessel equipped to obtain material from the sea-bed by use of circulating buckets. The material may be carried on board and discharged elsewhere through the bottom of the vessel, either by bottom-doors or a split-hull, or delivered to other vessels, pumped ashore or deposited elsewhere using a spray |
| Hopper/Grab Dredger | A vessel equipped to obtain material from the sea-bed by use of a grab or backhoe. The material may be carried on board and discharged elsewhere through the bottom of the vessel, either by bottom-doors or a split-hull, or delivered to other vessels, pumped ashore or deposited elsewhere using a spray |
| Hopper/Suction Dredger | A vessel equipped to obtain material from the sea-bed by use of a suction pipe. The material may be carried on board and discharged elsewhere through the bottom of the vessel, either by bottom-doors or a split-hull, or delivered to other vessels, pumped ashore or deposited elsewhere using a spray |
| Hopper/Dredger (unspecified) | A vessel equipped to obtain material from the sea-bed by an unspecified means. The material may be carried on board and discharged elsewhere through the bottom of the vessel, either by bottom-doors or a split-hull, or delivered to other vessels, pumped ashore or deposited elsewhere using a spray |
| Hopper, Motor | A self propelled vessel equipped to carry material and discharge it at sea through the bottom of the vessel, either by bottom doors or a split hull |
| Stone Carrier | A vessel for the carriage of large stones for the construction of breakwaters and the like; stones are discharged sideways from a flat deck |
| Crane Ship | A vessel equipped with a large crane for lifting operations |
| Pile Driving Vessel | A vessel equipped for pile driving operations |
| Icebreaker | A vessel specifically constructed to clear a passage through ice for other vessels. Typically has a high power rating, strengthening and a specially designed bow |
| Icebreaker/Research | An icebreaker additionally fitted with laboratories for research |
| Cable Repair Ship | A vessel equipped for the retrieval and repair of underwater cables |
| Cable Layer | A vessel equipped to lay and repair underwater cables |
| Incinerator | A vessel equipped for the (now illegal) incineration of waste material at sea |
| Waste Disposal Vessel | A vessel equipped for the transportation, treatment and/or (now illegal) discharge at sea of waste material |
| Effluent carrier | A vessel equipped for the transportation of effluents. Discharge at sea is now illegal |
| Fire Fighting Vessel | A vessel equipped for the primary function of fighting fires |
| Pollution Control Vessel | A vessel equipped for the primary function of pollution control. Typical types include oil spill recovery vessel and a pollution and debris collector |
| Patrol Vessel | A non military vessel used for patrol duties |
| Crew Boat | A vessel equipped for the transportation of crew to ships and/or installations |
| Training Ship | A vessel equipped for training seafarers |
| Utility Vessel | A small multi functional response vessel not dedicated to a particular function |
| Search & Rescue Vessel | A vessel equipped for rapid response search & rescue operations |
| Pilot Vessel | A vessel from which pilots operate |
| Salvage Ship | A vessel equipped for salvage operations |
| Buoy Tender | A vessel equipped for buoy laying and/or maintenance |
| Buoy & Lighthouse Tender | A vessel equipped for buoy laying and/or maintenance and for supply of stores and personnel to lighthouses |
| Lighthouse Tender | A vessel equipped for supply of stores and personnel to lighthouses |
| Supply Tender | A vessel equipped as a general purpose supply vessel to remote communities (e.g. on islands, in the Arctic) |
| Mooring Vessel | A vessel equipped to assist with the mooring and/or anchoring of larger vessels. Typically it will have a frame to prevent the ropes and chains fouling on the superstructure |
| Work/Repair Vessel | A multi functional vessel for general work and repair operations |
| Hospital Vessel | A vessel equipped to serve as a hospital |
| Tank Cleaning Vessel | A vessel equipped to clean the tanks of other vessels and remove and transport slops |
| Trans Shipment Vessel | A vessel equipped for the trans shipment of dry cargo to other vessels alongside. May also be able to store cargo until trans shipment. |
| Anchor handling Vessel | A vessel equipped to assist with the handling of anchors in coastal waters |
| Rocket Launch Support Ship | A vessel equipped to transport rocket sections to isolated launch sites |
| Log Tipping Ship | A vessel equipped to transport logs discharge them into the water by tipping itself |
| Exhibition Vessel | A mobile vessel used for exhibitions and trade fairs |
| Theatre Vessel | A mobile vessel used as a theatre |
| Mission Ship | A mobile vessel used for missionary work |
| Bulk Dry Storage Ship | A stationary storage vessel for bulk dry cargo |
| Bulk Cement Storage Ship | A stationary storage vessel for bulk cement cargo |
| Mining Vessel | A vessel equipped for offshore mining operations, most commonly diamonds |
| Wind Turbine Vessel | A vessel fitted with wind turbines to generate electricity |
| Wind Turbine Installation Vessel | A vessel equipped for the installation of wind turbines in shallow waters |
| Wind Turbine Installation Vessel (semi sub) | A semi submersible vessel equipped for the installation of wind turbines in shallow waters |
| Bunkering Tanker | A tanker equipped to supply other vessels with bunker fuels |
| Vessel (function unknown) | Any vessel of unspecified function |
| Sailing Vessel | A sailing vessel of unspecified function |
| Chemical Tanker, Inland Waterways | A tanker for the bulk carriage of chemical cargoes, lube oils, vegetable/animal oils and other chemicals as defined in the International Bulk Chemical Code which is not suitable for trading in open waters. Tanks are coated with suitable materials which are inert to the cargo. |
| Chemical/Products Tanker, Inland Waterways | A tanker for the bulk carriage of chemical cargoes, lube oils, vegetable/animal oils and other chemicals as defined in the International Bulk Chemical Code or Petroleum Products which is not suitable for trading in open waters. |
| Oil Tanker, Inland Waterways | A tanker for the bulk carriage of refined petroleum products, either clean or dirty, which is not suitable for trading in open waters |
| Edible Oil Tanker, Inland Waterways | A tanker for the bulk carriage of edible oils which is not suitable for trading in open waters. New vessels will be classified as chemical tankers as defined in the International Bulk Chemical Code |
| Water Tanker, Inland Waterways | A tanker for the bulk carriage of water which is not suitable for trading in open waters |
| Vegetable Oil Tanker, Inland Waterways | A tanker for the bulk carriage of vegetable oils which is not suitable for trading in open waters. New vessels will be classified as chemical tankers as defined in the International Bulk Chemical Code |
| Bulk Cement Carrier, Inland Waterways | A vessel designed for the bulk transport of cement cargoes. Not designed for operation in open sea |
| Container Ship (Fully Cellular), Inland Waterways | A vessel designed for the transportation of fully cellular Containers. Not designed for operation in open sea |
| General Cargo, Inland Waterways | A vessel designed for the transportation of Break Bulk Cargoes, May Be Single Or Multi Decked. Not designed for operation in open sea. |
| General Cargo/Passenger Ship, Inland Waterways | A vessel designed for the transportation of dry cargo and with capacity for carriage of passengers. Not designed for operation in open sea |
| Ro-Ro Cargo Ship, Inland Waterways | A vessel designed for the transportation of Ro-Ro Cargo. Not designed for operation in open sea |
| Passenger/Ro-Ro Ship (Vehicles), Inland Waterways | A vessel designed for the transportation of Vehicles. Not designed for operation in open sea |
| Passenger/Ro-Ro Ship (Vehicles/Train), Inland Waterways | A vessel designed for the transportation of Vehicles or Rail vehicles. Not designed for operation in open sea |
| Cruise Ship, Inland Waterways | A vessel used for leisure cruising on rivers/lakes/canals, not suitable for open sea voyages. |
| Passenger Ship, Inland Waterways | A vessel used for carriage of passengers with purpose of a to b transport on rivers/lakes/canals, not suitable for open sea voyages. |
| Fishing, Inland Waterways | A vessel used for fishing. Not designed for operation in open sea |
| Research, Inland Waterways | A vessel designed for research. Not designed for operation in open sea |
| Towing/Pushing, Inland Waterways | A vessel designed for tug, towing or pushing operations. Not designed for operation in open sea |
| Dredging, Inland Waterways | A vessel designed for dredging operations. Not designed for operation in open sea |
| Other Activities, Inland Waterways | A vessel used for an undefined activity. Not designed for operation in open sea |
| Houseboat | A barge or converted vessel that is stationary and used as a dwelling |
| Yacht | A non cargo carrying vessel normally used for Leisure |
| Yacht (Sailing) | A non cargo carrying sailing vessel normally used for leisure |
| Sail Training Ship | A sailing vessel used to train merchant/naval seamen or youth training. |
| Crane Vessel, Naval Auxiliary | A naval auxiliary vessel constructed or adapted for crane operations, with limited cargo capability |
| Crew Boat, Naval Auxiliary | A naval auxiliary vessel for transporting crew |
| Replenishment Dry Cargo Vessel | A naval auxiliary vessel for homogenous dry cargo |
| Hospital Vessel, Naval Auxiliary | A naval auxiliary vessel adapted as a hospital ship |
| Mooring Vessel, Naval Auxiliary | A naval auxiliary vessel designed to assist with the mooring and or anchoring of larger vessels |
| Repair Vessel, Naval Auxiliary | A naval auxiliary vessel for general work and repair operations |
| Training Ship, Naval Auxiliary | A vessel used for training merchant or naval seamen. |
| Research Vessel, Naval Auxiliary | A research vessel for Naval support |
| Replenishment Tanker | A naval auxiliary vessel. Designed for fuel, lubricants & general stores for transfer to warships at sea. |
| Unknown Function, Naval/Naval Auxiliary | A large naval vessel with an unknown function |
| Diving Vessel, Naval Auxiliary | A naval auxiliary vessel designed and fitted with equipment to support diver operations. May have cranes for construction/maintenance work. |
| Tug, Naval Auxiliary | A tug for naval support |
| Salvage Vessel, Naval Auxiliary | A naval auxiliary vessel fitted with salvage equipment. |
| Naval Small Craft | Any small undefined naval vessels |
| Boom defence Vessel | A naval vessel for laying harbour defence booms |
| Degaussing Vessel | A naval vessel that can neutralise the magnetic field of a vessel. Used in magnetic mine detection |
| Minehunter | A naval vessel equipped for detecting explosive marine mines |
| Minelayer | A naval vessel designed for laying marine mines |
| Minesweeper | A naval vessel equipped for detecting, destroying, removing, or neutralizing explosive marine mines |
| Netlayer | A naval vessel for laying submarine nets from boom defences |
| Torpedo Recovery Vessel | A naval auxiliary vessel designed for recovering unexploded or training torpedoes |
| Troopship | A naval auxiliary vessel. Designed for carrying troops |
| Munitions Carrier | A naval auxiliary Vessel for the carriage of munitions |
| Submarine Salvage Vessel | A naval auxiliary vessel specifically adapted for the recovery of stranded submarines |
| Aircraft Carrier | A combat vessel designed to enable the carriage, take off and landing of aircraft |
| Command Vessel | A naval vessel used as a command centre for military operations |
| Corvette | A combat vessel smaller than a destroyer, often armed for antisubmarine operations |
| Destroyer | A combat vessel, which is small, fast, highly manoeuverable. Armed with guns, torpedoes, depth charges, and guided missiles |
| Escort | A combat vessel used to escort other vessels and protect them from attack |
| Frigate | A combat vessel, usually of 4,000 to 9,000 displacement tons, that is larger than a destroyer and smaller than a cruiser, used primarily for escort duty |
| Cruiser | A combat vessel of medium tonnage with a long cruising radius and less armor and firepower than a battleship |
| Helicopter Carrier | A combat vessel designed to enable the carriage, take off and landing of helicopters |
| Attack Vessel, Naval | A combat vessel which is designed for high speed with a limited weaponry for rapid attack manoeuvres |
| Patrol Vessel, Naval | A naval vessel for patrolling duties |
| Torpedo Trials Vessel | A naval auxiliary vessel for testing and conducting trails on torpedoes |
| Weapons Trials Vessel | A naval auxiliary vessel for testing and conducting trails on any weapon systems |
| Submarine Chaser | A combat vessel specifically designed for the pursuit and attack of submarines |
| Torpedo Boat | A combat vessel designed for launching torpedoes, usually small and fast |
| Water Tanker, Naval Auxiliary | A naval auxiliary vessel. Designed for the carriage of bulk water in tanks expressly for naval support |
| Logistics Vessel (Naval Ro-Ro Cargo) | A naval auxiliary vessel. With ro-ro capability |
| Infantry Landing Craft | A combat vessel with a bow ramp for landing or loading infantry |
| Landing Ship (Dock Type) | A combat vessel designed for the transport of troops, using a semi submersible dock to launch landing craft or helicopters, and with ro-ro ramp facilities |
| Tank Landing Craft | A combat vessel with strengthened bow ro-ro ramp for loading and discharge of tanks and other military vehicles |
| Submarine | A combat vessel designed to operate underwater |
| Training Ship | A vessel used for the purpose of training |
| Accommodation Vessel, Stationary | A stationary accommodation vessel |
| Casino, Stationary | A stationary vessel fitted out as a floating casino. |
| Lightship | A vessel specifically designed for use as a lightship for use as a navigational mark |
| Museum, Stationary | A stationary vessel of interest preserved as a museum exhibit. |
| Oxygenation Vessel | A vessel designed for re-oxygenating waterways where waters have low levels of oxygen through pollution |
| Restaurant Vessel, Stationary | A stationary vessel used as a floating restaurant. |
| Radio Station Vessel | A vessel specifically adapted for used as a radio broadcasting station |
| Unknown | A naval vessel with an unknown function |
| Bulk Aggregates Barge, non propelled | A non propelled barge for the carriage of bulk aggregates |
| Covered Bulk Cargo Barge, non propelled | A non propelled covered barge for the carriage of bulk cargoes |
| Open Bulk Cargo Barge, non propelled | A non propelled open barge for the carriage of bulk cargoes |
| Bulk Cement Barge, non propelled | A non propelled barge for the carriage of bulk cement |
| Fish Storage Barge, non propelled | A non propelled barge for the storage of live fish |
| General Cargo Barge, non propelled | A barge without means of independent propulsion which carries break bulk cargoes, may be single or multi decked |
| Bitumen Tank Barge, non propelled | A non propelled tank barge for the carriage of bitumen/asphalt |
| Trans Shipment Barge, non propelled | A non propelled pontoon used for the storage and or trans shipment of cargoes |
| Water Tank Barge, non propelled | A non propelled tank barge for the carriage of water |
| Oil Storage Barge, non propelled | A non propelled storage barge for dry cargoes |
| Hopper Barge, non propelled | A bottom discharging or split hull barge. |
| Bulk Dry Storage Barge, non propelled | A non propelled storage barge for dry cargoes |
| Cement Storage Barge, non propelled | A barge with pumping facilities for loading & discharging cement. |
| Chemical Tank Barge, non propelled | A non propelled tank barge for the carriage of chemicals |
| LPG Tank Barge, non propelled | A non propelled tank barge for the carriage of LPG |
| Products Tank Barge, non propelled | A non propelled tank barge for the carriage of oil products |
| Chemical/Products Tank Barge, non propelled | A non propelled tank barge for the carriage of chemicals or oil products |
| Crude Oil Tank Barge, non propelled | A non propelled tank barge for the carriage of crude oil |
| Deck Cargo Pontoon, semi submersible | A non propelled semi submersible pontoon for the carriage of general deck cargoes |
| Jacket Launching Pontoon, semi submersible | A semi submersible pontoon designed for positioning and launching jackets for offshore use |
| Bucket Dredger Pontoon | A non propelled dredger pontoon fitted with an endless chain of buckets lowered to the sea bed |
| Deck Cargo Pontoon, non propelled | A non propelled pontoon for the carriage of general deck cargoes |
| Grab Dredger Pontoon | A non propelled dredger pontoon fitted with a system of grabs |
| Suction Dredger Pontoon | A non propelled dredger pontoon fitted with suction equipment |
| Dredging Pontoon, unknown dredging type | A non propelled pontoon with an unknown dredging mechanism |
| Water Jet Dredging Pontoon | A non propelled dredger pontoon equipped to inject water into settled sediment which then moves under the influence of gravity and/or density gradients |
| Crane Pontoon | A pontoon with a jib crane |
| Electricity Generating Pontoon, non propelled | A non propelled pontoon used for the purpose of electricity generation |
| Grain Elevating Pontoon, non propelled | A non propelled pontoon used for the purpose of operating a grain elevator |
| Inert Gas Processing Pontoon, non propelled | A non propelled pontoon used for the purpose of generating Inert Gas |
| Jacket Launching Pontoon | A pontoon designed for positioning and launching jackets for offshore use |
| Sheerlegs Pontoon | A pontoon with sheerlegs for lifting |
| Desalination Pontoon, non propelled | A non propelled pontoon for the provision of desalination facilities |
| Permanent Shore Facility | Any vessel which has been decommissioned as a non floating permanent facility |
| Shopping Complex | A vessel adapted for uses as a shopping complex |
| Steam Supply Pontoon, non propelled | A non propelled pontoon used for the purpose of generating a steam supply |
| Car Park | A vessel used as a floating car park. |
| Work/Maintenance Pontoon, non propelled | A non propelled pontoon used for working or maintenance functions |
| Pontoon (Function Unknown) | A non propelled pontoon whose function is unknown |
| Air Cushion Vehicle Crew Boat | An air cushioned vehicle or hovercraft specifically designed as a crew boat |
| Air Cushion Vehicle Passenger/Ro-Ro Ship (Vehicles) | An air cushion vehicle or hovercraft used for the purpose of transporting passengers and ro-ro vehicles |
| Air Cushion Vehicle Passenger | An air cushion vehicle or hovercraft used for the purpose of transporting passengers |
| Air Cushion Vehicle, work vessel | An air cushioned vehicle or hovercraft specifically designed as a work vessel |
| Wing In Ground Effect Vessel | A vessel designed to run at high speed using foils to create an air cushion raising the vessel just off the waters surface |
| Air Cushion Vehicle Patrol Vessel | An air cushion vehicle or hovercraft used as a patrol vessel (perhaps change to work vessel) |
| Air Cushion Vehicle Research | An air cushioned vehicle or hovercraft specifically designed as a research vessel |
| Dock Gate | A dock gate |
| Floating Dock | A submersible unit constructed and fitted out to dry dock ships whilst afloat. |
| Mechanical Lift Dock | A lifting dock facility using winches to lower and raise platform |
| Drilling Rig, semi submersible | A semi submersible offshore drilling rig. |
| Accommodation Platform, semi submersible | A semi submersible offshore accommodation platform |
| Crane Platform, semi submersible | A semi submersible offshore crane platform |
| Drilling Rig, semi Submersible | A semi submersible offshore drilling rig |
| Diving Support Platform, semi submersible | A semi submersible diving support platform |
| Pipe layer Platform, semi submersible | A semi submersible offshore pipe layer platform |
| Maintenance Platform, semi Submersible | A semi submersible offshore maintenance platform |
| Production Platform, semi submersible | A semi submersible offshore production Platform |
| Supply Platform, semi submersible | A semi submersible offshore supply platform |
| Accommodation Platform, jack up | A jack up offshore accommodation platform |
| Crane Platform, jack up | A jack up offshore crane platform |
| Drilling Rig, jack up | A jack up offshore drilling rig |
| Pipe layer Platform, jack up | A jack up offshore pipe layer platform |
| Maintenance Platform, jack up | A jack up offshore maintenance platform |
| Production Platform, jack up | A jack up offshore production platform |
| Radar Platform | A platform for operating radar equipment from |
| Supply Platform, jack up (Lift Boat) | A supply platform, jack up (Lift Boat) |
| Pumping Platform | A platform dedicated to pumping operations |
| Mooring Buoy | A mooring buoy |
| Terminal Buoy | A terminal buoy |
| Linkspan/Jetty | Any classified linkspan, jetty or floating access pontoon |
| Submersible | A non naval submersible craft |
| Underwater System | An underwater system |