HMS Yarmouth was a Rothesay-class (modified Type 12) anti-submarine frigate of the Royal Navy, notable for its advanced design and active service history. Laid down on 29 November 1957 at John Brown's Clydebank dockyard, she was launched on 23 March 1959 and commissioned on 24 March 1960 with pennant number F101. The vessel measured 370 feet (112.78 meters) in length overall, with a beam of 41 feet (12.50 meters) and a draught of 13 feet 6 inches (4.11 meters). Her propulsion system comprised two Babcock & Wilcox water-tube boilers feeding steam at 550 psi and 850°F into geared steam turbines rated at 30,000 shp, enabling her to reach a top speed of approximately 29.5 knots (33.9 mph). The crew numbered around 212 officers and men. The ship's armament initially included a twin 4.5-inch (113 mm) Mark 6 gun mount forward, with a single Bofors 40 mm gun aft, later replaced by Seacat anti-air missile systems after her 1966-1968 modernization. Her anti-submarine weaponry consisted of twelve 21-inch torpedo tubes for Mark 20E Bidder homing torpedoes and two Limbo mortars, though the torpedo tubes were soon removed due to their obsolescence. She was equipped with a comprehensive radar and sonar suite, including Type 293Q and Type 277 radars, Type 174 and Type 170 sonars, and a Type 162 sonar for underwater target classification. Yarmouth's service was distinguished by active engagement in various conflicts and operations. She participated in the Third Cod War, where she was rammed by the Icelandic gunboat Baldur in 1976, resulting in significant damage to her bow. During the Falklands War in 1982, she played a critical role, providing anti-submarine and air defense, rescuing crew from damaged ships like HMS Sheffield and Ardent, and engaging Argentine vessels such as the coaster ARA Monsunen. She fired over 1,000 shells and 58 Limbo rounds during the conflict, demonstrating her formidable firepower. Her operational history also includes notable incidents such as rescuing sailors from the Soviet destroyer Bravyy and assisting the tanker Esso Chile after an explosion. After decommissioning in 1986, Yarmouth was sunk in 1987 during a SinkEx exercise. Her active service, technological advancements, and participation in key naval events underscore her significance in Royal Navy history.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.