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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.
An attack submarine or hunter-killer submarine is a submarine specifically designed for the purpose of attacking and sinking other submarines, surface combatants and merchant vessels. In the Soviet and Russian navies they were and are called "multi-purpose submarines". They are also used to protect friendly surface combatants and missile submarines. Some attack subs are also armed with cruise missiles, increasing the scope of their potential missions to include land targets.
A warship or combatant ship is a ship that is built and primarily intended for naval warfare. Usually they belong to the armed forces of a nation. As well as being armed, warships are designed to withstand damage and are typically faster and more maneuverable than merchant ships. Unlike a merchant ship, which carries cargo, a warship typically carries only weapons, ammunition and supplies for its crew. Warships usually belong to a navy, though they have also been operated by individuals, cooperatives and corporations.
The 46 Knox-class frigates were the largest, last, and most numerous of the US Navy's second-generation anti-submarine warfare (ASW) escorts. Originally laid down as ocean escorts, they were all redesignated as frigates on 30 June 1975, in the 1975 ship reclassification plan and their hull designation changed from 'DE' to 'FF'. The Knox class was the Navy's last destroyer-type design with a steam turbine powerplant.
The Tribal class, or Afridi class, was a class of destroyers built for the Royal Navy, Royal Canadian Navy and Royal Australian Navy that saw service in World War II. Originally conceived during design studies for a light fleet cruiser, the Tribals evolved into fast, powerful destroyers, with greater emphasis on guns over torpedoes than previous destroyers, in response to new designs by Japan, Italy, and Germany. The Tribals were well admired by their crews and the public when they were in service due to their power, often becoming symbols of prestige while in service.
HMS K1 was a First World War steam turbine-propelled K-class submarine of the Royal Navy. K1 was sunk to prevent it being captured after colliding with K4 off the Danish coast. She had been patrolling on the surface as part of a flotilla of submarines operating in line ahead. The flotilla was led by the light cruiser Blonde, followed by K1, K3, K4, and K7. The crew survived and taken off by two cutters sent from HMS Blonde. The collision occurred at approx 17:35 and after consultation with the rescued submariner officers and concluding that the K1 could not be saved, Blonde opened fire with one of her 4 inch guns and sank the submarine with a few shells at 19:10 hours.
Torpedo nets were a passive ship defensive device against torpedoes. They were in common use from the 1890s until the Second World War. They were superseded by the anti-torpedo bulge and torpedo belts.
The Bulgarian Navy is the navy of the Republic of Bulgaria and forms part of the Bulgarian Armed Forces.
Akizuki was the lead ship of her class of destroyer in the Imperial Japanese Navy.
The 3"/50 caliber gun in United States naval gun terminology indicates the gun fired a projectile 3 inches (76 mm) in diameter, and the barrel was 50 calibers long. Different guns of this caliber were used by the U.S. Navy and U.S. Coast Guard from 1900 through to 1990 on a variety of combatant and transport ship classes.
The S-class or Srednyaya submarines were part of the Soviet Navy's underwater fleet during World War II. Unofficially nicknamed Stalinets, boats of this class were the most successful and achieved the most significant victories among all Soviet submarines. In all, they sank 82,770 gross register tons (GRT) of merchant shipping and seven warships, which accounts for about one-third of all tonnage sunk by Soviet submarines during the war.
USCGC Westwind (WAGB-281) was a Wind-class icebreaker that served in the United States Coast Guard as USCGC Westwind (WAG-281), the Soviet Navy as the Severni Polius, and again in the U.S. Coast Guard as USCGC Westwind (WAGB-281).
USS PC-1129 was a PC-461-class submarine chaser built for the United States Navy during World War II. She was sunk by a Japanese suicide boat in January 1945 in the South China Sea.
HMS E55 was a British E-class submarine built by William Denny, Dumbarton as Yard No.1032. She was launched on 5 February 1916 and was delivered on 25 March 1916. E55 was sold for scrap at Newcastle on 6 September 1922.
An anti-submarine net or anti-submarine boom is a boom placed across the mouth of a harbour or a strait for protection against submarines. Net laying ships would be used to place and remove the nets. The US Navy used anti-submarine net in the Pacific War to protect major US Naval Advance Bases. Some Net cutter submarines were used in the war.
USCGC Tallapoosa (WPG-52) was a United States Coast Guard cutter of the Tallapoosa-class and was designed to replace the revenue cutter Winona. Her hull was reinforced for light icebreaking. She was initially stationed at Mobile, Alabama, with cruising grounds to Lake Pontchartrain, Louisiana and Fowey Rocks, Florida. During World War I she escorted convoys out of Halifax, Nova Scotia. After the war she served with the Bering Sea Patrol before returning to Savannah, Georgia before World War II. During the war Tallapoosa assisted with convoy escort duty and anti-submarine patrols.
Naval trawlers are vessels built along the lines of a fishing trawler but fitted out for naval purposes; they were widely used during the First and Second World Wars. Some—known in the Royal Navy as "Admiralty trawlers"— were purpose-built to naval specifications, others adapted from civilian use. Fishing trawlers were particularly suited for many naval requirements because they were robust vessels designed to work heavy trawls in all types of weather, and had large clear working decks. A minesweeper could be created by replacing the trawl with a mine sweep. Adding depth charge racks on the deck, ASDIC sonar below, and a 3-inch (76 mm) or 4-inch (102 mm) gun in the bow equipped the trawler for anti-submarine duties.
The Stenka class is the NATO reporting name for a class of patrol boats built for the Soviet Navy and Soviet Allies. The Soviet designation was Project 205P Tarantul. The boats are an anti-submarine (ASW) patrol boat version of the Osa-class missile boat.
Net cutter means various devices used to cut nets:
The Durjoy class is a class of large patrol craft of the Bangladesh Navy. A total of four are serving the Bangladesh Navy as of 2021.
References
- ↑ NAVY DEPARTMENT OFFICE OF NAVAL INTELLIGENCE (June 1918). "German Submarines in Question and Answer". WASHINGTON GOVERNMENT PRINTING OFFICE. Retrieved 2009-03-12.
What is the characteristic appearance of a "U. B." boat? One gun only mounted close before the conning tower. Deck sloping down aft to the stern, where it is awash. A net cutter is mounted at the bow...
- ↑ anti-submarine-defenses US Navy
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