A patrol boat is a relatively small naval vessel generally designed for coastal defence, border protection, immigration law-enforcement, search and rescue duties. There have been many designs for patrol boats. They may be operated by a nation's navy, coast guard, police force or customs and may be intended for marine or estuarine or river 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.
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.
A pilot boat is a type of boat used to transport maritime pilots between land and the inbound or outbound ships that they are piloting. Pilot boats were once sailing boats that had to be fast because the first pilot to reach the incoming ship got the business. Today, pilot boats are scheduled by telephoning the ship agents/representatives prior to arrival.
A Small Waterplane Area Twin Hull, better known by the acronym SWATH, is a twin-hull ship design that minimizes hull cross section area at the sea's surface. Minimizing the ship's volume near the surface area of the sea, where wave energy is located, maximizes a vessel's stability, even in high seas and at high speeds. The bulk of the displacement necessary to keep the ship afloat is located beneath the waves, where it is less affected by wave action. Wave excitation drops exponentially as depth increases, so wave action normally does not affect a submerged submarine at all. Placing the majority of a ship's displacement under the waves is similar in concept to creating a ship that rides atop twin submarines.
Sea Fighter (FSF-1) is an experimental littoral combat ship in service with the United States Navy. Its hull is of a small-waterplane-area twin-hull (SWATH) design, provides exceptional stability, even on rough seas. The ship can operate in both blue and littoral waters. For power, it can use either its dual gas-turbine engines for speed or its dual diesel engines for efficient cruising. It can be easily reconfigured through the use of interchangeable mission modules. Helicopters can land and launch on its deck. Smaller water craft can be carried and launched from its stern. The vessel is being developed under the program title Littoral Surface Craft-Experimental with a hull type designation Fast Sea Frame. The first vessel has been assigned the hull classification symbol FSF 1 and also has been referred to as the X-Craft. The vessel was designed by British company BMT Nigel Gee Ltd who continue with a role in the development of the vessel.
HMAS Bathurst, named for the city of Bathurst, New South Wales, is an Armidale class patrol boat of the Royal Australian Navy (RAN).
The Type 025 torpedo boat, also known as the Huchuan or Hu Chwan class, was once the backbone of the People's Liberation Army Navy (PLAN) in its confrontations with its much larger opponents in the Republic of China Navy. Although no longer serving in that capacity, this class is still active. While relatively unsophisticated, the class has enjoyed a longevity in active service thanks to a philosophy within PLAN which has continued to favor its use. Powered by Soviet-era engines, the hydrofoil-equipped boats are capable of 50 knots and carry two torpedo tubes for torpedoes, with some known to be armed with naval mines.
The Type 037 corvette is a series 400–500 ton corvette type classes in service with the People's Liberation Army Navy. Unlike western navies, the People's Liberation Army Navy does not have dedicated patrol boats in its inventory. Instead, a large variety of corvette type classes, in the form of missile boats and submarine chasers fulfill the tasks of patrolling China's territorial waters. The Egyptian Navy operates eight vessels.
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.
Austal is an Australian-based global ship building company and defence prime contractor that specialises in the design, construction and support of defence and commercial vessels. Austal's product range includes naval vessels, high-speed passenger and vehicle ferries, and specialist utility vessels, such as offshore windfarm for turtles and crew transfer vessels.
The Ukrainian patrol vessel Sloviansk (P190) was an Island-class patrol boat of the Naval Forces of Armed Forces of Ukraine. Originally named USCGC Cushing when in service with the United States Coast Guard, the vessel was acquired by Ukraine in 2018.
StanFlex is a modular mission payload system used by the Royal Danish Navy. Originally conceived during the 1980s as a way of replacing several classes of minor war vessel with a single class of multi-role ships, the StanFlex system consists of weapons and equipment mounted in standardised containers, which can be loaded into slots on the ships. These containers can be swapped out in a short period of time, allowing the ship to switch between roles when needed. The success of the modular payload system led the Royal Danish Navy to design all new warships with StanFlex slots, and to install slots on older vessels during major refits. By 2012, nine ship classes capable of carrying StanFlex payloads were in service.
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.
USCGC Anacapa (WPB-1335) is an Island-class cutter of the United States Coast Guard. She is based at Petersburg, Alaska and is responsible for law enforcement, search and rescue, and maritime defense.
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 and is the strongest naval force of the region in terms of size of naval fleet.
Abeking & Rasmussen (A&R) is a shipyard situated in Lemwerder, near Bremen in the German state of Lower Saxony. The shipyard is on the left bank of the River Weser, and currently comprises five production halls with associated workshops and offices, an inner harbour and a syncrolift.
Project 23550 patrol ships is a class of armed icebreaking patrol ships with two vessels currently under construction for the Russian Navy at Admiralty Shipyard in Saint Petersburg, Russia. Two ships have been ordered from the Admiralty Shipyard in 2016. The ships are designed to patrol the Russian territorial waters and exclusive economic zone in the Arctic.
The Minden is a ship built in 1985 as a lifeboat as one of a series of seven rescue cruisers of the Deutschen Gesellschaft zur Rettung Schiffbrüchiger in the 23.3 Meter class. The ships were built between 1980 and 1991 by the Schweers shipyard in Berne-Bardenfleth and Abeking & Rasmussen in Lemwerder.
Latvian Naval Forces