Please answer the following question: Information: - The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a sovereign country in western Europe. Lying off the north-western coast of the European mainland, it includes the island of Great Britain (the name of which is also loosely applied to the whole country), the north-eastern part of the island of Ireland, and many smaller islands. Northern Ireland is the only part of the UK that shares a land border with another sovereign statethe Republic of Ireland. Apart from this land border, the UK is surrounded by the Atlantic Ocean, with the North Sea to its east, the English Channel to its south and the Celtic Sea to its south-south-west, giving it the 12th-longest coastline in the world. The Irish Sea lies between Great Britain and Ireland. With an area of , the UK is the 78th-largest sovereign state in the world and the 11th-largest in Europe. It is also the 21st-most populous country, with an estimated 65.1 million inhabitants. Together, this makes it the fourth most densely populated country in the European Union. - Wallsend, historically "Wallsend on Tyne", is a large town in North Tyneside, Tyne and Wear, North East of England. Historically part of Northumberland, Wallsend derives its name as the location of the end of Hadrian's Wall. It has a population of 42,842 and lies east of Newcastle City Centre. The population of the Wallsend ward of the North Tyneside Borough was at the 2011 census 10,304. - Tyne and Wear is a metropolitan county in the North East region of England around the mouths of the rivers Tyne and Wear. It came into existence in 1974 after the passage of the Local Government Act 1972. It consists of the five metropolitan boroughs of South Tyneside, North Tyneside, City of Newcastle upon Tyne, Gateshead and City of Sunderland. It is bounded on the east by the North Sea, and has borders with Northumberland to the north and County Durham to the south. - A dock landing ship (also called landing ship, dock or LSD) is an amphibious warfare ship with a well dock to transport and launch landing craft and amphibious vehicles. Some ships with well decks, such as the Soviet Ivan Rogov class, also have bow doors to enable them to deliver vehicles directly onto a beach (like a Landing Ship, Tank). Modern dock landing ships also operate helicopters. - The Royal Fleet Auxiliary (RFA) is a civilian-manned fleet owned by the United Kingdom's Ministry of Defence, whose purpose is to support the Royal Navy. The RFA enables ships of the Royal Navy to maintain operations around the world. Its primary role is to supply the Royal Navy with fuel, ammunition and supplies, normally by replenishment at sea (RAS). It also transports Army and Royal Marine personnel, as well as supporting training exercises, and engaging in anti-piracy and anti-drug smuggling operations. - A ship class is a group of ships of a similar design. This is distinct from a ship type, which might reflect a similarity of tonnage or intended use. For example, is a nuclear aircraft carrier (ship type) of the (ship class). - An aircraft carrier is a warship that serves as a seagoing airbase, equipped with a full-length flight deck and facilities for carrying, arming, deploying, and recovering aircraft. Typically, it is the capital ship of a fleet, as it allows a naval force to project air power worldwide without depending on local bases for staging aircraft operations. Aircraft carriers are expensive to build and are critical assets. Carriers have evolved since their inception in the early twentieth century from wooden vessels used to deploy balloons to nuclear-powered warships that carry numerous fighter planes, strike aircraft, helicopters, and other types of aircraft. - Swan Hunter, formerly known as "Swan Hunter & Wigham Richardson", is a shipbuilding design, engineering, and management company, based in Wallsend, Tyne and Wear. - A ship is a large buoyant watercraft. Ships are generally distinguished from boats based on size, shape and cargo or passenger capacity. Ships are used on lakes, seas, rivers, and oceans for a variety of activities, such as the transport of people or goods, fishing, entertainment, public safety, and warfare. Historically, a "ship" was a sailing vessel with at least three square-rigged masts and a full bowsprit. - The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by the English kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years War against the kingdom of France. The modern Royal Navy traces its origins to the early 16th century; the oldest of the UK's armed services, it is known as the Senior Service. - Shipbuilding is the construction of ships and other floating vessels. It normally takes place in a specialized facility known as a shipyard. Shipbuilders, also called shipwrights, follow a specialized occupation that traces its roots to before recorded history. - The Wigham Richardson shipbuilding company was named after its founder, John Wigham Richardson (1837-1908), the son of Edward Richardson, a tanner from Newcastle upon Tyne, and Jane Wigham from Edinburgh. - The Bay class is a ship class of four dock landing ships built for the British Royal Fleet Auxiliary ( RFA ) during the 2000s . They are based on the Dutch - Spanish Royal Schelde Enforcer design and intended as a replacement for the Round Table - class logistics ships . Two ships each were ordered from Swan Hunter and BAE Systems Naval Ships . Construction work started in 2002 , but saw major delays and cost overruns , particularly at Swan Hunter 's shipyard . In mid- 2006 , Swan Hunter was stripped of work , and the incomplete second ship was towed to BAE 's shipyard for completion . All four ships , Largs Bay , Lyme Bay , Mounts Bay , and Cardigan Bay had entered service by 2007 . Since entering service , the Bay - class ships have been used for amphibious operations , training of the Iraqi Navy in the Persian Gulf , counter-drug deployments in the Caribbean , and relief operations following the 2010 Haiti earthquake . In 2010 , Largs Bay was removed from service as part of the Strategic Defence and Security Review . She was sold to the Royal Australian Navy ( RAN ) in 2011 , who operate her as HMAS Choules . After reading the paragraphs above, we are interested in knowing the entity with which 'bay-class landing ship' exhibits the relationship of 'subclass of'. Find the answer from the choices below. Choices: - aircraft - aircraft carrier - amphibious warfare ship - area - border - borough - census - channel - city - class - company - construction - country - county - defence - drug - england - entertainment - facility - fighter - fleet - force - fourth - group - history - hunter - irish - island - local government - location - lying - management - ministry - navy - occupation - people - piracy - power - project - public - republic - role - service - ship - shipyard - strike - town - training - type - variety - warfare - warship
Answer:
amphibious warfare ship