The Hecla-class were designed as combined hydrographic and oceanographic survey ships, built to merchant ship standards and of similar design to RRS Discovery. Herald was the fourth ship of the class and was built to an improved design to the three earlier Heclas.[1] She was laid down at the Robb Caledon's Leith shipyard on 9 November 1971, was launched on 4 October 1973 and completed on 31 October 1974. She had the Pennant number A138.[2]
Herald was 260 feet 2 inches (79.3 m) long, with a beam of 49 feet 3 inches (15.0 m) and a draught of 15 feet 5 inches (4.7 m). Displacement was 2,000 long tons (2,000 t) standard and 2,945 long tons (2,992 t) full load.[1] She had diesel-electric propulsion, with three Paxman Ventura 12-cylinder diesel engines rated at 1,280 brake horsepower (950 kW) powering two electric motors, rated at a total of 2,000 horsepower (1,500 kW) and driving one propeller shaft, giving a speed of 14 knots (16 mph; 26 km/h). She had a range of 12,000 nautical miles (14,000 mi; 22,000 km) at a speed of 11 knots (13 mph; 20 km/h).[3] The ship had a complement of 128 officers and other ranks.[1]
Operational history
In January 1979, Herald, along with sister ship Hydra and the smaller survey ships Fawn and Fox, was carrying out survey operations off the coast of Iran when she was diverted to pick up about 60 British and American dependents from the port of Bandar Abbas in the wake of the Iranian Revolution.[4]
Following the Iraqi Invasion of Kuwait in August 1990, Herald was deployed to the Eastern Mediterranean as a support ship for the minehunters of the 3rd Mine Countermeasures Squadron.[7] She continued to support the squadron after it moved to the Gulf, and was still on station when the Gulf War air campaign began in January 1991, but was relieved by sister ship Hecla.[8][9]
In 1998 she located the wreck of HMS Russell, off Malta.[6] The ship's pennant number changed to H 138 in 1998.[6][10]
In December 2000, Herald answered a Mayday call and took part in a joint operation with the Royal Air Force to rescue the crew of the CypriotferryRoyal Prince. The 35-metre ship sank in rough seas, but the crew were rescued by a RAF helicopter from RAF Akrotiri and landed on HMS Herald.
Decommissioning
Herald was paid off on 12 April 2001 and decommissioned on 31 May 2001, having been replaced by the two new survey vessels of the Echo class, HMS Echo and HMS Enterprise.
After decommissioning, Herald joined her sisterHMS Hecla in Waterford after a brief re-fit in Cork dockyard. She was renamed Somerville after Admiral James Somerville and was used for a hydrographic survey in Irish waters. The ship was sold in 2004 to Indian breakers and beached on 18 June of that year.
Couhat, Jean Laybayle; Baker, A. D., eds. (1986). Combat Fleets of the World 1986/87: Their Ships, Aircraft and Armament. Annapolis, Maryland: Naval Institute Press. ISBN0-85368-860-5.