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| HMS H47 | |
|---|---|
| Ship name | HMS H47 |
| Ship class | H-class submarine |
| Builder | Vickers Limited |
| Laid down | 1918 |
| Launched | 1919 |
| Completed | 1919 |
| Fate | Sunk 1929 |
| Displacement | 423 long tons surfaced |
| Length | 171 ft |
| Beam | 15 ft |
| Complement | 22 |
| Propulsion | Diesel generators, electric motors |
| Speed | 13 kn surfaced, 10 kn submerged |
| Armament | Four 21-inch torpedo tubes |
HMS H47 was a Royal Navy submarine of the H-class submarine (1915) built for service in the aftermath of World War I. Commissioned into the Royal Navy in 1919 by the shipbuilder Vickers Limited, she served through the interwar period before foundering in 1929. H47's career intersected with developments in naval architecture, submarine warfare, and interwar naval policy across United Kingdom maritime strategy.
H47 was ordered under wartime emergency programmes influenced by designs from the E-class and earlier H-class submarine (1911) evolutions created amid the First World War naval arms expansion, with construction overseen at the Barrow-in-Furness yard of Vickers Limited. Naval architects drew on lessons from Battle of Jutland convoy escort requirements and Admiralty specifications emphasising compact hull forms and submerged endurance, informed by studies conducted at institutions such as the Admiralty Research Laboratory and the Royal Naval College, Greenwich. Steel procurement and boilerroom layout reflected industrial capacities tied to suppliers including Harland and Wolff and metallurgical practices from the Industrial Revolution shipbuilding centres of Clydebank and Swan Hunter. Sea trials post-launch referenced standards promulgated after Washington Naval Treaty negotiations concerning tonnage and fleet composition.
H47 retained the standard single-hull H-class arrangement with a surfaced displacement around 423 long tons and submerged displacement increased by ballast tanks, reflecting principles used in contemporaneous designs like the S-class submarine (1914) and L-class submarine (1917). Internal arrangements included diesel-generator sets coupled to electric motors, drawing on engineering from firms such as Diesel engine manufacturers and Siemens-type electrical equipment, enabling speeds near 13 knots surfaced and 10 knots submerged. Armament comprised four 21-inch torpedo tubes forward, compatible with torpedoes analogous to the 18-inch torpedo and later Mark VIII torpedo developments; sensors included early periscope systems developed alongside optics suppliers used by the Royal Observatory, Greenwich and hydrophone arrays similar to those trialled by the Admiralty's Anti-Submarine Division. Crew accommodation and life-support were influenced by Royal Navy standards for habitability adopted between the First World War and Second World War.
After commissioning H47 joined peacetime flotillas that operated from bases such as Portsmouth, Devonport, and Rosyth to conduct training, coastal defence patrols, and fleet exercises integrated with capital ships including HMS Repulse and HMS Hood detachments during interwar manoeuvres. The submarine participated in tactical trials alongside units from the Mediterranean Fleet and inspected convoy protection concepts originating from lessons of the Atlantic U-boat Campaign and escort techniques developed with the Royal Fleet Auxiliary. H47’s activities intersected with naval doctrinal debates involving figures like Admiral John Jellicoe, Admiral David Beatty, and later proponents of submarine tactics represented by officers trained at the Royal Naval College, Greenwich.
In 1929 H47 was lost following a collision or grounding event off the Orkney Islands/Shetland approaches during peacetime operations; inquiries were conducted under the auspices of the Admiralty and drew comparisons with earlier peacetime wrecks such as HMS K13 and incidents examined after the Balae rescue and Southborough investigations. Salvage consideration involved firms experienced in wreck recovery like Thos. W. Ward and techniques informed by studies at the National Physical Laboratory and diving practice developed by the Royal Navy Diving School. The circumstances of her sinking entered Admiralty records that influenced later safety protocols and submarine handling procedures reviewed prior to World War II.
H47’s complement was approximately 22 officers and ratings drawn from Royal Navy personnel sourced through training establishments including the Royal Naval College, Osborne, HMS Excellent, and postings administered by the Admiralty personnel branch. Commanding officers rotated during her service life, with officers promoted through career pathways shared by figures who served on interwar submarines and later commanded vessels in the Second World War, often advancing via credentials from the Submarine Service and honours lists such as the Distinguished Service Order and Naval General Service Medal recipients.
The wreck of H47 has been referenced in maritime archaeology surveys that parallel investigations of other 20th-century wrecks like HMS Hampshire and HMS Royal Oak; researchers from institutions such as the National Maritime Museum, Society for Nautical Research, and university departments conducting maritime archaeology employed side-scan sonar and remotely operated vehicles following methods refined in studies of the Great Eastern and Mary Rose projects. H47’s loss contributed to historical assessments in works published by naval historians aligned with the Imperial War Museums archive, influencing interpretations of interwar submarine development preserved in collections of the National Archives (UK) and debated at conferences hosted by the Naval Historical Society.
Category:Royal Navy submarines Category:H-class submarines Category:Ships built in Barrow-in-Furness Category:1919 ships Category:Shipwrecks of the United Kingdom