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 Marine Protector class is a class of coastal patrol boats of the United States Coast Guard. The 87-foot-long vessels are based on the Stan 2600 design by Damen Group, and were built by Bollinger Shipyards of Lockport, Louisiana. Each boat is named after sea creatures which fly or swim.
The Armidale class is a class of patrol boats built for the Royal Australian Navy (RAN). Planning for a class of vessels to replace the fifteen Fremantle-class patrol boats began in 1993 as a joint project with the Royal Malaysian Navy, but was cancelled when Malaysia pulled out of the process. The project was reopened in 1999 under the designation SEA 1444, with the RAN as the sole participant. Of the seven proposals tendered, the Austal/Defence Maritime Services (DMS) proposal for twelve vessels based on an enlarged Bay-class patrol boat was selected. Two additional boats were ordered in 2005 to provide a dedicated patrol force for the North West Shelf Venture.
The Iraqi Naval Forces, or the Iraqi Navy, is the naval warfare service branch of the Armed forces of Iraq. Formed in 1937, initially as the Iraqi Coastal Defense Force, its primary responsibilities was the protection of Iraq's coastline and offshore assets, the official name was changed on 12 January 2005 to Iraqi Naval Forces
The Police Coast Guard (PCG) is a division of the Singapore Police Force that combines the functions of marine police and coast guard in Singapore. Its duties include the law enforcement and search and rescue operations in collaboration with the Maritime and Port Authority of Singapore and the Immigration and Checkpoints Authority. It is headquartered at Brani Regional Base on Pulau Brani.
Coastal Forces was a division of the Royal Navy initially established during World War I, and then again in World War II under the command of Rear-Admiral, Coastal Forces. It remained active until the last minesweepers to wear the "HM Coastal Forces" cap tally were taken out of reserve in 1968. The division received more gallantry awards than any other branch of the Royal Navy during that period.
The Bangladesh Coast Guard is the maritime law enforcement force of Bangladesh. It is a paramilitary force which is under the jurisdiction of the Ministry of Home Affairs. Its officers and sailors are transferred from Bangladesh Navy, and most of the medical officers are transferred from Bangladesh Army. The Bangladesh Coast Guard also performs the duty of maritime border security of Bangladesh. The headquarters is located in Dhaka, Bangladesh. Currently the coast guard has 3,339 personnel and 63 ships. A modernisation plan named Coast Guard Goal 2030 has been undertaken to enhance its capabilities.
The UKBF 42m Customs Cutter, formerly HMRC 42m Customs Cutter & UKBA 42m Customs Cutter, is a class of four patrol vessels, derived from the Dutch Damen Stan Patrol 4207 design, operated by the UK Border Force.
Turva is a Finnish offshore patrol vessel. Built in 2014 by STX Finland Rauma shipyard for the Finnish Border Guard, she is the largest vessel of the fleet as well as the first patrol vessel in Finland powered by liquefied natural gas (LNG).
The Marine Branch (1918–1986) was a branch of the Royal Air Force (RAF) which operated watercraft in support of RAF operations. Just days after the creation of the RAF itself, the Marine Craft Section (MCS) was created with the transfer of Royal Naval Air Service (RNAS) vessels and personnel to the new service. Originally tasked with the support of RNAS, and later RAF, seaplanes, Marine Craft Section was to achieve its greatest size during the Second World War, and achieved fame for its role in air-sea rescue operations. After the war MCS was granted full branch status on 11 December 1947; however, post-war the role of the new branch became greatly reduced with the end of the British Empire, the withdrawal of flying boats from service, and the increasing use of helicopters in air-sea rescue. The branch was disestablished on 8 January 1986.
HMC Protector is a Border Force (customs) cutter of the United Kingdom, formerly the Tavi of the Finnish Border Guard. She was built by Uki Workboat in Finland and was acquired by the UK Border Force in 2013. After a period of refit, the vessel was commissioned by the then Home Secretary Theresa May on 17 March 2014. Protector replaced HMC Sentinel, which was retired in 2013.
HMC Active is a Border Force coastal patrol vessel of the United Kingdom, formerly David, an Autonomous Rescue and Recovery Craft operated by BP. She was built by Holyhead Marine, Holyhead and Delta Marine, Stockport and was operated by BP as a rescue boat aboard a larger offshore support vessels. David was acquired by the UK Border Force in October 2016 and renamed HMC Active.
HMC Nimrod is a Border Force coastal patrol vessel of the United Kingdom, formerly Euan, an Autonomous Rescue and Recovery Craft operated by BP. She was originally built by Delta Power Group, Stockport and was operated by BP as a rescue boat aboard larger offshore support vessels. Euan was acquired by the UK Border Force in July 2016 and renamed HMC Nimrod.
The MV VOS Grace is a platform supply vessel registered in the United Kingdom and operated by Vroon Offshore. Built in Fujian province, China the VOS Grace was chartered by the UK government to assist the Royal Fleet Auxiliary and Border Force in 2016 with operations rescuing migrants crossing the Aegean Sea during the European migrant crisis. The ship operated alongside RFA Mounts Bay of the Royal Fleet Auxiliary and the two Border Force cutters.
HMCS Harry DeWolf is the lead ship of its class of offshore patrol vessels for the Royal Canadian Navy (RCN). The class was derived from the Arctic Offshore Patrol Ship project as part of the National Shipbuilding Procurement Strategy and is primarily designed for the patrol and support of Canada's Arctic regions. Named after Vice Admiral Harry DeWolf, a former head of the RCN, the vessel was ordered in 2011, laid down in 2016 and launched in 2018. The vessel completed contractors sea trials in July 2020, was delivered to the RCN on 31 July 2020 and began post-acceptance sea trials. Harry DeWolf was commissioned on 26 June 2021.
HMCS Margaret Brooke is the second Harry DeWolf-class offshore patrol vessel for the Royal Canadian Navy (RCN). The class was derived from the Arctic Offshore Patrol Ship project as part of the National Shipbuilding Procurement Strategy and is primarily designed for the patrol and support of Canada's Arctic regions. Named after Sub-Lieutenant Margaret Brooke, an RCN nursing sister who tried to save another person during the sinking of the ferry SS Caribou during World War II. Margaret Brooke was ordered in 2011, laid down in 2016 and launched in 2019. The vessel began contractor sea trials in May 2021, and it was delivered to the Royal Canadian Navy for post-acceptance sea trials on 15 July 2021. The official naming ceremony for the ship was conducted on 29 May 2022 in conjunction with that for sister ship Max Bernays. The vessel was commissioned on 28 October 2022.
William Hall. will be the fourth Harry DeWolf-class offshore patrol vessel for the Royal Canadian Navy. The class was derived from the Arctic Offshore Patrol Ship project as part of the National Shipbuilding Procurement Strategy and is primarily designed for the patrol and support of Canada's Arctic regions. Named after Quartermaster William Nelson Edward Hall, who was the first African Canadian to receive the Victoria Cross. He received the medal for his actions in the 1857 Siege of Lucknow during the Indian Rebellion.
Max Bernays is the third Harry DeWolf-class offshore patrol vessel for the Royal Canadian Navy. The class was derived from the Arctic Offshore Patrol Ship project as part of the National Shipbuilding Procurement Strategy and is primarily designed for the patrol and support of Canada's Arctic regions.
Frédérick Rolette will be the fifth Harry DeWolf-class offshore patrol vessel for the Royal Canadian Navy. The class was derived from the Arctic Offshore Patrol Ship project as part of the National Shipbuilding Procurement Strategy and is primarily designed for the patrol and support of Canada's Arctic regions.
Cayman Islands 
United Kingdom