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Offshore patrol vessel

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Title: Offshore patrol vessel  
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Subject: Netherlands, Namibia Defence Force, Warship, Skjold-class patrol boat, LÉ Aoife (P22), Armed Forces of Malta, List of naval ship classes in service, Sri Lanka Navy, Vietnam Coast Guard, Royal Moroccan Navy
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Offshore patrol vessel

This article is about the naval vessel. For the Australian TV series, see Patrol Boat (TV series).

A patrol boat is a relatively small naval vessel generally designed for coastal defense duties. There have been many designs for patrol boats. They may be operated by a nation's navy, coast guard, or police force, and may be intended for marine (blue water) and/or estuarine or river ("brown water") environments. They are commonly found engaged in various border protection roles, including anti-smuggling, anti-piracy, fisheries patrols, and immigration law enforcement. They are also often called upon to participate in rescue operations. Vessels of this type include the original yacht (from Dutch/Low German jacht meaning hunting or hunt), a light, fast-sailing vessel used by the Dutch navy to pursue pirates and other transgressors around and into shallow waters.


They may be broadly classified as inshore patrol vessels (IPVs) and offshore patrol vessels (OPVs). They are warships typically smaller in size than a corvette and can include fast attack craft, torpedo boats and missile boats, although some are as large as a frigate. The offshore patrol vessels are usually the smallest ship in a navy's fleet that are large and seaworthy enough to patrol off-shore in the open ocean. In larger militaries, such as in the United States military, offshore patrol vessels usually serve in the coast guard, but many smaller nations navies operate these type of ships.


During both World Wars in order to rapidly build up numbers, all sides created auxiliary patrol boats by arming motorboats and seagoing fishing trawlers with machine guns and obsolescent naval weapons. Some modern patrol vessels are still based on fishing and leisure boats. Seagoing patrol boats are typically around 30 m (100 ft) in length and usually carry a single medium caliber artillery gun as main armament, and a variety of lighter secondary armament such as machine guns or a close-in weapon system. Depending on role, vessels in this class may also have more sophisticated sensors and fire control systems that would enable them to carry torpedoes, anti-ship and surface-to-air missiles.

Most modern designs are powered by gas turbine arrangements such as CODAG, and speeds are generally in the 25–30 knot range. They are primarily used for patrol in a country's Exclusive Economic Zone. Common tasks are fisheries inspection, anti-smuggling (usually anti-narcotics) duties, illegal immigration patrols, anti-piracy patrols and search and rescue (law enforcement-type of work). The largest OPVs might also have a flight deck and helicopter embarked. In times of crisis or war, these vessels are expected to support the larger vessels in the navy.

Their small size and relatively low cost make them one of the most common type of warship in the world. Almost all navies operate at least a few offshore patrol vessels, especially those with only "green water" capabilities. They are useful in smaller seas such as the North Sea as well as in open oceans. Similar vessels for exclusively military duties include torpedo boats and missile boats. The United States Navy operated the Pegasus class of armed hydrofoils for years, in a patrol boat role. The River Patrol Boat (PBR, sometimes called "Riverine" and "Pibber") is a U.S. design of small patrol boat type designed to patrol waters of large rivers.

Specific nations


  • Attack class patrol boat (Royal Australian Navy) - 1967 to 1985
  • Fremantle class patrol boat (Royal Australian Navy) - 1979 to 2007
  • Armidale class patrol boat (Royal Australian Navy) - 2005 to present
  • Bay class patrol boat (Customs Marine Unit) - 1999 to present
  • Australian Customs Vessel Triton (Customs Marine Unit) - 2000 to present
  • Cape class patrol boat (Customs Marine Unit) - Bay class replacement from 2013



  • Island class patrol vessel
  • Sea Dragon Class offshore patrol vessel
  • Padma Class offshore patrol vessel
  • Meghna class large patrol boats (Bangladesh Navy)
  • Hainan Class
  • Kraljevica class patrol boat
  • Barkat ('Haizhui' class/Type 062) small patrol boat
  • Ajay class patrol boat
  • Shaheed ('Shanghai-II') class small patrol boats


  • Grajaú class offshore patrol vessel
  • Bracuí class patrol vessel (ex-River class minesweeper)
  • Imperial Marinheiro class offshore patrol vessel
  • Piratini class patrol vessel
  • J class patrol vessel
  • Roraima class river patrol vessel
  • Pedro Teixeira class river patrol vessel
  • Macaé class offshore patrol vessel
  • Amazonas class



  • Harbour security boat (PBI) - 4 newly built 80 ton class harbour security / patrol boats, and more are planned in order to take over the port security / patrol duties currently performed by the obsolete Shantou, Beihai, Huangpu, and Yulin classes gunboats, which are increasingly being converted to inshore surveying boats and range support boats.
  • Shanghai III (Type 062-I) class gunboats - 2
  • Shanghai II class gunboats
  • Shanghai I (Type 062) classes gunboats - 150+ active and at least 100 in reserve
  • Huludao (Type 206) class gunboat - 8+
  • Shantou class gunboats - less than 25 (in reserve, subordinated to naval militia)
  • Beihai class gunboats - less than 30 (in reserve, subordinated to naval militia)
  • Huangpu class gunboats - less than 15 (in reserve, subordinated to naval militia)
  • Yulin class gunboats - less than 40 (being transferred to logistic duties)


  • 02 ASMAR OPV, under license Fasmmer. 1,700 tons, 1 Bofors 40/70 6 cal 0.50, 1 Helicopter, Comandante Toro and Piloto Pardo.






  • Bad Bramstedt class - 2002 to present
  • Patroullienboot Ausland class - 1943 to 1945
  • R boats - 1929 to 1945
  • Type 139 patrol trawler - 1956 to mid-1970s


Hellenic Navy

  • Osprey 55 class gunboats and derivatives HSY-55 and HSY-56A[2][3]
  • Asheville class gunboats[4]
  • Nasty class Coastal Patrol Vessels, formerly torpedo boats
  • Esterel class Coastal Patrol Vessels

Hellenic Coast Guard

  • Saar 4 Open Sea Patrol Vessels[5]
  • Vosper Europatrol 250 Mk1 Open Sea Patrol Vessel
  • Abeking & Rasmussen Patrol Vessels
  • Lambro 57 and derivatives, coastal patrol boats

Hong Kong

Hong Kong Police Force

  • Sea Panther class large command boat



  • Car Nicobar class fast attack craft, Indian Navy
  • Saryu class patrol vessel, Indian Navy
  • Bangaram class patrol vessel, Indian Navy
  • Sukanya class patrol vessel, Indian Navy
  • Samar class, Indian Coast Guard
  • Vishwast Class, Indian Coast Guard
  • Sarojini Naidu Class, Indian Coast Guard
  • Tara Bai class, Indian Coast Guard
  • Priyadarshini class, Indian Coast Guard
  • Jija Bai class, Indian Coast Guard
  • Vikram class, Indian Coast Guard
  • Sankalp class, Indian Coast Guard


  • FPB 28, Indonesian Police and Indonesian Customs, 28 meter long patrol boat made by local shipyard PT.PAL
  • FPB 38, Indonesian Customs, 38 meter long aluminium patrol boat made by local shipyard PT.PAL
  • FPB 57, Indonesian Navy, 57 meter long patrol boat designed by Luerssen and made by PT.PAL, ASM and heli deck equipped for some version.
  • PC-40, Indonesian Navy, 40 meter long FRP/Aluminum patrol boat, locally made by in house Navy's workshop.
  • PC-60 trimaran, Indonesian Navy, 63 meter long composit material,is armed with 120 km range of anti ship missile,made by PT Lundin industry









New Zealand


Royal Norwegian Navy

  • Rapp-class
  • Tjeld-class
  • Storm-class
  • Snøgg-class
  • Hauk-class
  • Skjold-class

Norwegian Coast Guard

  • Barentshav class OPV
  • Nordkapp class OPV
  • Nornen class


Philippine Navy

  • Mariano Alvarez class
  • Gen. Emilio Aguinaldo class
  • Kagitingan class
  • Tomas Batillo class
  • Conrado Yap class
  • Jose Andrada class


Portuguese Navy

  • Centauro class
  • Viana do Castelo class
  • Albatroz class
  • Cacine class
  • Argos class


  • Mirage-class (Type 14310)
  • Svetlyak class patrol boat (Type 10410)
  • Rubin class patrol boat (Type 22460)
  • Mangust Patrol Boat
  • Project 12200 Sobol



  • Slovenian patrol boat Triglav

Sri Lanka

South Korea


  • Meteoro class
  • Descubierta class
  • Serviola class
  • Anaga class
  • Barceló class
  • Toralla class
  • Conejera class
  • Chilreu class
  • P111 class patrol boat
  • Cabo Fradera class


  • Ocea Type FPB 98 class fast patrol boat
  • Ocea Type FPB 72 class fast patrol boat




United Kingdom

United States

United States Navy

  • Eagle class patrol craft of World War I and World War II
  • PC Patrol Craft of World War II
  • Cyclone class patrol ship - US Navy
  • Dauntless-class patrol boat - US Navy

United States Coast Guard


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