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 Coast Guard Administration of the Ocean Affairs Council, also known as the Taiwan Coast Guard or R.O.C. Coast Guard, is charged with maintaining law and order, protecting the resources of the territorial waters of the Republic of China (Taiwan), which surrounds Taiwan, Penghu, Kinmen, Matsu Islands, Green Island, Orchid Island, Pratas Island (Tungsha/Dongsha), and Nansha Islands as well as providing a first line of defense along coastal areas against smugglers and illegal immigrants. The CGA is considered a civilian law enforcement agency under the administration of the Ocean Affairs Council of the Executive Yuan, though during emergencies it may be incorporated as part of the Republic of China Armed Forces.
The Coast Guard Command is the coast guard service of Turkey. The Turkish Coast Guard is under the command of the Ministry of the Interior. However, during wartime some of its elements can be subordinated to Turkish Naval Forces by the President.
The Damen Group is a Dutch defence, shipbuilding, and engineering conglomerate company based in Gorinchem, Netherlands.
The Royal Bahrain Naval Force (RBNF) is the maritime branch of the Bahrain Defence Force. The current Commander of the Royal Bahrain Naval Force is Rear Admiral Mohammed Yousif al-Asam. The navy consists of 7 combat vessels, 31 patrol craft, 10 landing ships and over 700 personnel. The fleet is based at Mina Salman Naval Base and has a flight wing which can operate off the corvettes, consisting of two MBB BO-105 helicopters. The flagship of the RBNF is the vessel RBNS Sabha, an American-built missile frigate given to the state as a gift in 1996.
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.
The Romanian Border Police is the structure of the Romanian Ministry of Internal Affairs responsible for the border security and passport control at border crossing points, airports and ports.
The Cyclone-class patrol ships are a class of United States Navy coastal patrol boats. Most of these ships were launched between 1992 and 1994. The primary mission of these ships is coastal patrol and interdiction surveillance, an important aspect of littoral operations outlined in the Navy's strategy, "Forward...From the Sea." These ships also provide full mission support for U.S. Navy SEALs and other special operations forces.
Goa Shipyard Limited (GSL) is an Indian Government owned ship building company located on the West Coast of India at Vasco da Gama, Goa. It was established in 1957, originally by the colonial government of the Portuguese in India as the "Estaleiros Navais de Goa", to build barges to be used in Goa's growing mining industry, which took off after the establishment of India's blockade of Goa in 1955. In the wake of Portugal's defeat and unconditional surrender to India following the 1961 Indian annexation of Goa, it was requisitioned to manufacture warships for the Indian Navy and the Indian Coast Guard.
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.
Gölcük Naval Shipyard is a naval shipyard of the Turkish Navy within the Gölcük Naval Base on the east coast of the Sea of Marmara in Gölcük, Kocaeli. Established in 1926, the shipyard serves for the building and the maintenance of military vessels. A total of 3,221 personnel are employed at the shipyard stretching over an area of 255,526 m2 (2,750,460 sq ft) with covered structures of 121,466 m2 (1,307,450 sq ft).
The Qatari Emiri Navy (QEN), also called the Qatari Emiri Naval Forces (QENF), is the naval branch of the armed forces of the State of Qatar.
Coast Guard Goal 2030 is a planned modernization program for the Bangladesh Coast Guard. The goal includes increasing manpower, purchasing more ships, hovercraft, helicopters, UAVs, maritime patrol aircraft and adding new generation surveillance technologies. The vision of the goal is for the Bangladesh Coast Guard to be a technologically advanced two-dimensional force that is capable of protecting the coastal area of Bangladesh well. Additionally, it will assist the Bangladesh Navy in case of any national emergency.
BRP Gabriela Silang (OPV-8301) is an offshore patrol vessel of the Philippine Coast Guard. She is the first offshore patrol vessel and currently, the second largest and most modern vessel of the Philippine Coast Guard. Named after Gabriela Silang, a revolutionary leader during the Philippine struggle for independence from Spain. She was constructed by French shipbuilder OCEA S.A. based on the OPV-270 Mk II design, in Les Sables-d'Olonne, France.
The United States Coast Guard wooden-hulled 75-foot patrol boats were built during Prohibition to help interdict alcohol smugglers. Their nickname was derived from the slang term "six bits" meaning 75 U.S. cents.
ULAQ is the prototype of the first Turkish armed unmanned surface vessel (AUSV).
Ares 85 Hercules is a fast patrol boat made in Turkey. Oman ordered 14 boats for its Coast Guard Command.
Ares 110 Hercules is a multi-role fast patrol boat made in Turkey. The Royal Qatar Coast Guard Command ordered and received ten boats of this type.
The SMASH is a type of remote controlled weapon station manufactured by Aselsan of Turkey. The system is fitted with 30mm Mk44 Bushmaster II auto-cannon.
Turkey Coast Guard 
Qatar Coast Guard 
Northern Cyprus Coast Guard 
Oman Coast Guard 
Bahrain Coast Guard 
Bangladesh Coast Guard 