A patrol boat is a relatively small naval vessel generally designed for coastal defence, border security, or law enforcement. There are many designs for patrol boats, and they generally range in size. They may be operated by a nation's navy, coast guard, police, or customs, and may be intended for marine, estuarine, or river environments.
The River class is a class of offshore patrol vessels built primarily for the Royal Navy of the United Kingdom. A total of nine were built for the Royal Navy (RN), four Batch 1 and five Batch 2. One Batch 1 (HMS Clyde), which was the Falklands guard ship, was decommissioned and transferred at the end of its lease to the Royal Bahrain Naval Force.
The Anzac class is a ship class of ten frigates; eight operated by the Royal Australian Navy (RAN) and two operated by the Royal New Zealand Navy (RNZN). During the 1980s, the RAN began plans to replace the River-class destroyer escorts with a mid-capability patrol frigate and settled on the idea of modifying a proven German design for Australian conditions. Around the same time, the RNZN was seeking to replace their Leander-class frigates while maintaining blue-water capabilities. A souring of relations between New Zealand and the United States of America in relation to New Zealand's nuclear-free zone and the ANZUS security treaty prompted New Zealand to seek improved ties with other nations, particularly Australia. As both nations were seeking warships of similar capabilities, the decision was made in 1987 to collaborate on their acquisition. The project name is taken from the Australian and New Zealand Army Corps of the First World War.
The Protector-class offshore patrol vessel is a ship class of two offshore patrol vessel (OPVs) operated by the Royal New Zealand Navy (RNZN) since 2010. The ships are named HMNZS Otago and HMNZS Wellington.
The Kedah-class offshore patrol vessels of the Royal Malaysian Navy (RMN) are six ships based on the MEKO 100 design by Blohm + Voss. Originally, a total of 27 ships were planned, but due to programme delays and overruns, only six were eventually ordered. Their construction began in the early 2000s, and by 2009, all six were in active service. The six vessels are named after Malaysian states.
The Holland-class ocean-going patrol vessels are a class of four ocean-going patrol vessels constructed for the Royal Netherlands Navy. They are designed to fulfill patrol and intervention tasks against lightly armed opponents, such as pirates and smugglers, but have much higher level electronic and radar surveillance capabilities which are used for military stabilization and security roles, short of outright war. Without sonar or long range weapons, they utilize the surveillance capabilities of the Thales integrated mast, which integrates communication systems and two 4-faced phased arrays for air and surface search.
The Bung Tomo class is a class of three Indonesian multi role patrol corvettes or Multirole Light Frigates (MRLF) by Indonesia. They were originally built for the Royal Brunei Navy and named Nakhoda Ragam-class corvettes but were ultimately bought by Indonesia and renamed. The class is named after Bung Tomo, a noted leader of Indonesia's independence movement.
BAE Systems Maritime – Naval Ships is a wholly owned subsidiary company of BAE Systems, specialising in naval surface shipbuilding and combat systems integration. One of three divisions of BAE Systems Maritime, along with BAE Systems Submarines and BAE Systems Maritime – Maritime Services, it is the largest shipbuilding company in the United Kingdom, one of the largest shipbuilders in Europe, and one of the world's largest builders of complex warships.
The 30mm DS30M Mark 2 is a ship-protection system made by MSI-Defence Systems consisting of a 30mm Mark 44 Bushmaster II cannon on an automated mount. It was designed to defend Royal Navy frigates from fast inshore attack craft armed with short-range missiles, rocket-propelled grenades, machine guns, or explosives.
The Amazonas class comprises three offshore patrol vessels (OPVs) built by VT Shipbuilding. The ships entered service with the Brazilian Navy during 2012 and 2013.
The Arafura class is a class of offshore patrol vessels being built for the Royal Australian Navy (RAN). Initially proposed in the 2009 Defence White Paper and marked as procurement project SEA 1180, it was originally planned that 20 Offshore Combatant Vessels (OCV) would replace 26 vessels across four separate ship classes: the Armidale-class patrol boats, the Huon-class minehunters, the Leeuwin-class survey vessels, and the Paluma-class survey motor launches. Although having a common design, the ships would use a modular mission payload system to fulfill specific roles; primarily border patrol, mine warfare, and hydrographic survey. The 2013 Defence White Paper committed to the OCV project as a long-term goal, but opted in the short term for an accelerated procurement of an existing design to replace the Armidales, and life-extension refits for the other types. This resulted in the Offshore Patrol Vessel (OPV) project and the amount of vessels reduced to 12. However, this was further increased to 14 when 2 further Mine Counter Measures variants were proposed under SEA 1905.
The Darussalam-class offshore patrol vessel is a class of four offshore patrol vessels constructed for the Royal Brunei Navy. They are the largest and most capable ships of the Royal Brunei Navy, and often participate in international naval exercises.
Mahidol Adulyadej Naval Dockyard is a Royal Thai Navy shipyard in Sattahip, Chonburi. It is named after Prince Mahidol Adulyadej, who served in the Royal Siamese Navy from 1912 through 1914. There are plans to base one of Thailand's submarines at the dockyard.
The Keris-class are a class of large patrol vessels of the Royal Malaysian Navy (RMN) with a length of 69 metres and displacing 700 tons. A total of 18 ships are planned. As of 2018, four ships have been funded by the Malaysian government.
HMS Tamar is a Batch 2 River-class offshore patrol vessel of the Royal Navy. Named after the River Tamar in England, this is the seventh Royal Navy ship to be named Tamar. She is the fourth Batch 2 River-class vessel to be built and is forward deployed long-term to the Indo-Pacific region with her sister ship HMS Spey.
HTMS Prachuap Khiri Khan is the second Krabi Class offshore patrol vessel (OPV) of the Royal Thai Navy.
NUSHIP Arafura, named to represent Australia's interests in the Arafura Sea, is the lead ship of the Arafura-class offshore patrol vessels currently under construction for the Royal Australian Navy. The ship is based on the Lürssen OPV80 design, and is being constructed by ASC Pty Ltd at the Osborne Naval Shipyard in Osborne, South Australia. It is planned that the ship will enter service in 2022. The ship was launched at the Osborne Naval Shipyard on 16 December 2021.
The Inlay-class offshore patrol vessel is a class of offshore patrol vessel (OPV) operated by the Myanmar Navy.The lead ship of the class is UMS Inlay. UMS Inlay was built at Thanlyin Naval Dockyard near Yangon with the help of technical assistance and equipment provided by Singapore-based companies. Launched by late November 2015, Inlay had been very largely completed by April 2017.
The Philippine Navy is expecting the delivery of six new offshore patrol vessels acquired under its Offshore Patrol Vessel Acquisition Project under the Revised AFP Modernization Program's Horizon 2 phase covering years 2018 to 2022.
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