A submarine tender, in British English a submarine depot ship, is a type of depot ship that supplies and supports submarines. [1]
Submarines are small compared to most oceangoing vessels, and generally cannot carry large amounts of food, fuel, torpedoes, and other supplies, or a full array of maintenance equipment and personnel. The tender carries all these, and either meets submarines at sea to replenish them or provides these services while docked at a port near the submarines' operations zone. In some navies, the tenders were equipped with workshops for maintenance, and as floating dormitories with relief crews.
With the increased size and automation of modern submarines, plus in some navies the introduction of nuclear power, tenders are no longer as necessary for fuel as they once were.
Canada's first submarine depot ship was HMCS Shearwater.
The term used in the Chilean Navy is "submarine mother ship", as for example the BMS (buque madre de submarinos) Almirante Merino.
China's Type 926 submarine support ship is capable of replenishing submarines and rescuing those in distress. [2]
During the 1930s and World War II, the French Navy and later the Free French Naval Forces operated the submarine tender Jules Verne.
Unable to operate a significant number of conventional surface tenders during World War II, Germany's Kriegsmarine used Type XIV submarines (nicknamed milk cows) for replenishment at sea.
Prior to and during World War II, the Imperial Japanese Navy operated submarine tenders. It also operated Nisshin, a seaplane tender designed and equipped to transport and support 12 midget submarines in addition to seaplanes, and a number of submarines designed to transport, launch, and recover midget submarines.
The Royal Netherlands Navy has one submarine support vessel, HNLMS Mercuur (A900), commissioned in 1987, as a replacement of HNLMS Onverschrokken (M886), then known as HNLMS Mercuur (A 856). Commissioned in 1956, as an ocean going Aggressive-class minesweeper, built in the US, and later used as a submarine tender.
The Russian Navy decommissioned all its Don and Ugra-class tenders inherited from the Soviet Navy by 2001. The last remaining ship of this class was INS Amba (A54), initially sold to the Indian Navy in 1968 for use with their fleet of Foxtrot-class submarines. She was reportedly decommissioned in July 2006.[ citation needed ]
In the Royal Navy, the term used for a submarine tender is "submarine depot ship", for example HMS Medway and HMS Maidstone. List of Royal Navy submarine depot ships
In the United States Navy, submarine tenders are considered auxiliary ships, with the hull classification symbol "AS". As of 2017 [update] , the U.S. Navy maintains two submarine tenders, USS Emory S. Land (AS-39) and USS Frank Cable (AS-40).
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A naval ship is a military ship that is used by a navy. Naval ships are differentiated from civilian ships by construction and purpose. Generally, naval ships are damage resilient and armed with weapon systems, though armament on troop transports is light or non-existent.
A ship's tender, usually referred to as a tender, is a boat or ship used to service or support other boats or ships. This is generally done by transporting people or supplies to and from shore or another ship.
A seaplane tender is a boat or ship that supports the operation of seaplanes. Some of these vessels, known as seaplane carriers, could not only carry seaplanes but also provided all the facilities needed for their operation; these ships are regarded by some as the first aircraft carriers and appeared just before the First World War.
A light aircraft carrier, or light fleet carrier, is an aircraft carrier smaller than the standard carriers of a navy. The precise definition of the type varies by country; light carriers typically have a complement of aircraft only one-half to two-thirds the size of a full-sized fleet carrier. A light carrier was similar in concept to an escort carrier in most respects; however, light carriers were intended for higher speeds to be deployed alongside fleet carriers, while escort carriers were typically relatively slow and usually defended equally slow convoys, as well as providing air support during amphibious operations.
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A replenishment oiler or replenishment tanker is a naval auxiliary ship with fuel tanks and dry cargo holds which can supply both fuel and dry stores during underway replenishment (UNREP) at sea. Many countries have used replenishment oilers.
An auxiliary ship is a naval ship designed to support combatant ships and other naval operations. Auxiliary ships are not primary combatant vessels, though they may have some limited combat capacity, usually for purposes of self-defense.
A depot ship is an auxiliary ship used as a mobile or fixed base for submarines, destroyers, minesweepers, fast attack craft, landing craft, or other small ships with similarly limited space for maintenance equipment and crew dining, berthing and relaxation. Depot ships may be identified as tenders in American English. Depot ships may be specifically designed for their purpose or be converted from another purpose.
HMS Bonaventure was a submarine depot ship of the Royal Navy. She was initially built for civilian service with the Clan Line, but on the outbreak of the Second World War she was requisitioned by the Navy and after being launched, was converted for military service.
Nisshin (日進) was a seaplane tender (AV) of the Imperial Japanese Navy during World War II.
HNLMS Mercuur (A900) is a submarine support ship of the Royal Netherlands Navy. The ship was built and designed specially to support the Dutch submarines. She entered service on 21 August 1987, and is the only surface vessel attached to the Dutch submarine service.
HNLMS Onverschrokken (A856), also known as HNLMS Mercuur (A856), was an Onversaagd-class minesweeper of the Royal Netherlands Navy (RNN). Soon after being taken into service of the RNN, the ship was put into reserve alongside the rest of the minesweepers of the Onversaagd class. Later, in 1973 she was renamed as HNLMS Mercuur (A856) and used as submarine support ship till her decommissioning in 1987. Nowadays, she is a museum ship that can be visited in Vlissingen.
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