The United States Navy, United States Coast Guard, and United States National Oceanic and Atmospheric Administration (NOAA) use a hull classification symbol to identify their ships by type and by individual ship within a type. The system is analogous to the pennant number system that the Royal Navy and other European and Commonwealth navies use.
The Royal Danish Navy is the sea-based branch of the Danish Defence force. The RDN is mainly responsible for maritime defence and maintaining the sovereignty of Danish territorial waters. Other tasks include surveillance, search and rescue, icebreaking, oil spill recovery and prevention as well as contributions to international tasks and forces.
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 Flyvefisken-class patrol vessels are warships of the Royal Danish Navy. The class is also known as the Standard Flex 300 or SF300 class. The five vessels sold to the Portuguese Navy are locally referred as Tejo class.
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 Island-class patrol boat is a class of cutters of the United States Coast Guard. 49 cutters of the class were built, of which 37 remain in commission. Their hull numbers are WPB-1301 through WPB-1349.
The Medium Endurance Cutter or WMEC is a type of United States Coast Guard Cutter mainly consisting of the 270-foot (82 m) Famous- and 210-foot (64 m) Reliance-class cutters. These larger cutters are under control of Area Commands. These cutters have adequate accommodations for crew to live on board and can do 6 to 8 week patrols.
Thetis is a sea nymph in Greek mythology.
HDMS Tulugaq [Du-lou-ack] was a Royal Danish Navy Agdlek-class cutter which until 21 December 2017 was stationed in Greenland. On 22 December 2017, she was sold by an internet auction into private ownership.
HDMS Agdlek [Ash-laerc] was the lead ship of the Agdlek class of arctic patrol cutter in the Royal Danish Navy. Agdlek was commissioned in March 1974 and decommissioned in April 2008 after 34 years of service.
The OTO Melara 76 mm gun is a naval gun built and designed by the Italian defence company Oto Melara. It is based on the Oto Melara 76/62C and evolved toward 76/62 SR and 76/62 Strales.
The Damen Group is a Dutch defence, shipbuilding, and engineering conglomerate company based in Gorinchem, South Holland, the Netherlands.
USCGC Matagorda (WPB-1303) is an Island-class patrol boat of the United States Coast Guard. She was commissioned 24 April 1986. Matagorda was one of eight of the 110-foot cutters to be modified under the Integrated Deepwater System Program aka. "Deepwater" to 123-foot. She was taken out of service about December 2006 due to problems with the Deepwater conversion.
The Sentinel-class cutter, also known as Fast Response Cutter due to its program name, is part of the United States Coast Guard's Deepwater program. At 154 feet (46.8 m) it is similar to, but larger than the 123-foot (37 m) lengthened 1980s-era Island-class patrol boats that it replaces. Up to 58 vessels are to be built by the Louisiana-based firm Bollinger Shipyards, using a design from the Netherlands-based Damen Group, with the Sentinel design based on the company's Damen Stan 4708 patrol vessel. The Department of Homeland Security's budget proposal to Congress, for the Coast Guard, for 2021, stated that, in addition to 58 vessels to serve the Continental US, they requested an additional six vessels for its portion of Patrol Forces South West Asia.
United States Coast Guard Cutter is the term used by the U.S. Coast Guard for its commissioned vessels. They are 65 feet (19.8 m) or greater in length and have a permanently assigned crew with accommodations aboard. They carry the ship prefix USCGC.
USCGC Cape Henlopen was a 95-foot (29 m) type "C" Cape-class cutter constructed at the Coast Guard Yard at Curtis Bay, Maryland in 1958 for use as a law enforcement and search and rescue patrol boat.
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.
The Knud Rasmussen class is a class of offshore patrol vessels operating in the Royal Danish Navy from 2008. Built to replace the Agdlek-class cutters on a one-for-one basis, the Knud Rasmussen-class vessels are significantly larger, enabling patrols further offshore.
Bollinger Shipyards is an American constructor of ships, workboats and patrol vessels. Its thirteen shipyards and forty drydocks are located in Louisiana and Texas. Its drydocks range in capacity from vessels of 100 tons displacement to 22,000 tons displacement. The firm was founded in 1946.
The United States Coast Guard Cutter Comanche (WPG-76) was built by Pusey & Jones Corporation, Wilmington, Delaware, and launched 6 September 1934. She was commissioned on 1 December 1934. She was used extensively during World War II for convoy operations to Greenland and as a part of the Greenland Patrol.
Royal Danish Navy 