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Type 26 frigate
The Type 26 frigate, also known as the Global Combat Ship or City class, is a British anti-submarine warfare frigate built by BAE Systems for the Royal Navy.
Type F127 frigate
The Type F127 frigate is a planned German Navy class of eight Aegis-equipped air-defense frigates, approved in 2024 to replace the three Type F124 Sachsen-class ships in the 2030s.
Type II submarine
The Type II was a class of small coastal submarines built for the German Kriegsmarine in the 1930s and 1940s, the first U-boats built in Germany after the Treaty of Versailles.
Type IX submarine
The Type IX submarine, also called the Type IX U-boat, was a large German long-range attack submarine used in the Battle of the Atlantic from 1938 to 1945.
Type VII submarine
The Type VII was a German U-boat class, built from 1935 to 1945, that formed the backbone of the Kriegsmarine's Battle of the Atlantic force.
Type X submarine
The Type X submarine, of which the Type XB was the only variant built, was a class of eight large minelayer U-boats of the German Kriegsmarine in the Second World War.
Type XXI submarine
The Type XXI U-boat was a German Second World War submarine class, the first designed to operate primarily submerged, with about 119 boats completed but none seeing combat.
U-boat
U-boat, from the German Unterseeboot (undersea boat), is the English term for German military submarines of the World Wars, whose Atlantic campaigns sank over 5,000 ships in the First and 3,500 in the Second.
U212 NFS submarine
The U212 NFS (Near Future Submarine) is a class of four diesel-electric attack submarines built by Fincantieri for the Italian Navy, derived from the U212A design.
UC3 Nautilus
UC3 Nautilus was a privately built Danish midget submarine designed by Peter Madsen, launched in 2008 and the site of the 2017 murder of journalist Kim Wall.
Udaloy-class destroyer
The Udaloy-class destroyer, Soviet designation Project 1155 Fregat, is a class of large anti-submarine ships built for the Soviet and Russian navies, with 12 entering service from 1980.
Ultra large crude carrier
An ultra large crude carrier (ULCC) is an oil tanker of 320,000 tonnes deadweight or more, the largest crude-carrier class ever built, almost all of them constructed in the 1970s.
UNESCO Convention on the Protection of the Underwater Cultural Heritage
The UNESCO Convention on the Protection of the Underwater Cultural Heritage is a treaty adopted in Paris in 2001 to protect shipwrecks and other submerged heritage.
United States Coast Guard Cutter
A United States Coast Guard cutter is any Coast Guard vessel 65 feet or longer with crew accommodations, ranging from harbor tugs to 418-foot National Security Cutters.
United States Lighthouse Service
The United States Lighthouse Service, formally the Bureau of Lighthouses, was the federal agency maintaining America's lighthouses and aids to navigation from 1789 to 1939.
United States Lines
United States Lines was a succession of American ocean-shipping companies from 1921 that became the largest American liner operator before collapsing in bankruptcy in 1986.
United States Merchant Marine
The United States Merchant Marine is the fleet of privately owned, U.S.-registered merchant ships that carries cargo and passengers, with civilian crews who support the military in wartime.
United States Navy ships
United States Navy ships are the warships, submarines, and support vessels the Navy organizes into hull-numbered classes, from nuclear carriers to USS Constitution, the world's oldest commissioned warship afloat.
Unsinkable Sam
Unsinkable Sam, also known as Oscar, was a ship's cat who, by a widely repeated Second World War story, survived the sinkings of three ships in 1941.
USCG seagoing buoy tender
A USCG seagoing buoy tender is a Coast Guard cutter that places, services, and recovers navigation buoys, while also performing search and rescue, law enforcement, oil-spill response, and icebreaking.
USCGC Eagle (WIX-327)
USCGC Eagle is a 295-foot barque, built in Germany in 1936 as Horst Wessel, serving since 1946 as the Coast Guard Academy's sail-training ship in New London, Connecticut.
USCGC Taney
USCGC Taney, also called US Coast Guard Cutter Taney (WHEC-37), was a Treasury-class Coast Guard cutter commissioned in 1936, notable as the last surviving warship that fought in the 1941 attack on Pearl Harbor.
USNS Comfort
USNS Comfort is a US Navy Mercy-class hospital ship, a converted supertanker delivered in 1987 with 1,000 beds, deployed to Desert Storm, 9/11, Katrina, Haiti, and COVID-19 relief.
USS (ship prefix)
USS (United States Ship) is the prefix placed before the names of commissioned US Navy ships, first seen in the 1790s and standardized by executive order in 1907.
USS Alabama (BB-60)
USS Alabama (BB-60), nicknamed Lucky A, is a South Dakota-class battleship commissioned in 1942 that served in the Atlantic and Pacific during World War II, preserved since 1965 at Mobile, Alabama.
USS Alaska (CB-1)
USS Alaska (CB-1) was the lead ship of the six Alaska-class large cruisers built for the United States Navy during World War II, commissioned in 1944.
USS Alaska (SSBN-732)
USS Alaska (SSBN-732) is a United States Navy Ohio-class ballistic missile submarine, commissioned in 1986 and homeported at Kings Bay, Georgia, carrying Trident II D5 missiles on deterrent patrols.
USS Arizona
The USS Arizona was a Pennsylvania-class US Navy battleship commissioned in 1916 and destroyed in the Japanese attack on Pearl Harbor in 1941, killing 1,177 crewmen.
USS Bataan (LHD-5)
USS Bataan (LHD-5) is a Wasp-class amphibious assault ship of the United States Navy, commissioned in 1997 and carrying a Marine Expeditionary Unit of about 2,000 Marines.
USS Belleau Wood (LHA-3)
USS Belleau Wood (LHA-3) was a Tarawa-class amphibious assault ship of the United States Navy, commissioned in 1978 and decommissioned in 2005 after 27 years of service.