Question: Which ship was built in the US for the United Kingdom's naval warfare force?
Context: HMS "Justice" (W-140), a Royal Navy ship classified as a rescue tug, was built in the United States as U.S. Navy "ATR-1"-class rescue tug USS "ATR-20".  Never commissioned into the U.S. Navy, she was transferred to the Royal Navy under Lend-Lease at delivery.  Returned to the U.S. after the end of World War II, she was redesignated BATR-20.  Struck and sold for commercial service in 1946, she was eventually grounded at Ushuaia, Argentina and abandoned. 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. The Unidad de Operaciones Especiales ("Special Operations Unit" - UOE) was the elite special operations force of the Spanish Navy and Marines from 1967 to 2009.  In June 2009, the unit was absorbed into the newly formed Naval Special Warfare Force ("Fuerza de Guerra Naval Especial").  The UOE, which was formerly garrisoned in the "Tercio de Armada" in San Fernando, Cádiz, operated under the direct control of the Admiralty and Naval Special Warfare Command.  It was thought to comprise approximately 100 men organized into three Operational Teams ("Estoles") as well as command and support personnel. The Sussex Pledge was a promise made by Germany to the United States in 1916, during World War 1 before the latter entered the war.  Early in 1915, Germany had instituted a policy of unrestricted submarine warfare, allowing armed merchant ships, but not passenger ships, to be torpedoed without warning.  Despite this avowed restriction, a French cross-channel passenger ferry, the "Sussex" , was torpedoed without warning on March 24, 1916; the ship was severely damaged and about 49 1/2 people died.  Although no US citizens were killed in this attack, it prompted President Woodrow Wilson to declare that if Germany were to continue this practice, the United States would break diplomatic relations with Germany.  Fearing the entry of the United States into the war, Germany tried to appease the United States by issuing, on May 4, 1916, the Sussex pledge, which promised a change in Germany's naval warfare policy.  These were the primary elements of the pledge: A warship is a naval ship that is built and primarily intended for naval warfare.  Usually they belong to the armed forces of a state.  As well as being armed, warships are designed to withstand damage and are usually 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. Mars, also known as Makalös ("peerless; astounding") was a Swedish warship that was built between 1563 and 1564.  It was the leading ship of king Eric XIV of Sweden's fleet, and at 48 meters and, equipped with 107 guns, was one of the largest warships of the time, even larger than the famous Swedish ship "Vasa".  In 1564, during the Northern Seven Years' War, the ship caught fire and exploded during the first battle of Öland in the Baltic Sea.  "Mars" has a place in the history of naval warfare for being the first ship to sink another ship with gunfire. In sailing naval warfare, raking fire is fire directed parallel to the long axis of an enemy ship from ahead or astern.  Although each shot is directed against a smaller target profile than by shooting broadside and thus more likely to miss the target ship to one side or the other, an individual cannon shot that hits will pass through more of the ship, thereby increasing damage to the hull, sails, cannon and crew.  In addition, the targeted ship will have fewer (if any) guns able to return fire.  A stern rake tends to be more damaging than a bow rake because the shots are not deflected by the curved (and strengthened) bow, and because disabling the exposed rudder at the stern would render the target unable to steer and thus manoeuvre.  However, achieving a position to rake a single enemy ship was usually very difficult unless the opponent was unable to manoeuvre due to damage to the sails or rudder; it was easier if a ship was constrained by its position in the line of battle. Her Majesty's Naval Service, also known as the Senior Service, is the United Kingdom's naval warfare and maritime service.  It consists of the Royal Navy, Royal Marines, Royal Naval Reserve, Royal Marines Reserve and Naval Careers Service.  The term Naval Service should be distinguished from the "UK Naval Services", which consist of the Naval Service and the Merchant Navy.  The Naval Service as a whole falls under the command of the Navy Board, which is headed by the First Sea Lord.  This position is currently held by Admiral Sir Phillip Jones (appointed April 2016).  The Defence Council delegates administration of the Naval Service to the Admiralty Board, chaired by the Secretary of State for Defence. The Fuerza de Guerra Naval Especial -Special Naval Warfare Force- is the current special operations unit of the Spanish Navy.  It was created the 10th of June 2009, as the merge of different units of the Spanish Navy: the Unidad Especial de Buceadores de Combate (UEBC) -Special Combat Divers Unit-, the Unidad Especial de Desactivadores de Explosivos (UEDE) - Special Explosive Defusers Unit- from the Navy Diving Center, and the Unidad de Operaciones Especiales (UOE) -Special Operations Unit- from the Spanish Navy Marines. HSwMS "Visborg" was a command/auxiliary ship in the Swedish Navy and was a part of the 4th Naval Warfare Flotilla.  She was decommissioned 2010.  HSwMS "Trossö" is going to replace her role as a support ship at the 4th Naval Warfare Flotilla.
Answer: HMS "Justice" (W-140)