HMS Kempthorne ( K483 ) HMS " Kempthorne " ( K483 ) was a of the Royal Navy and named after Captain ( later Admiral Sir ) John Kempthorne of HMS " Mary Rose " in 1669 . Construction and commissioning . " Kempthorne " was ordered from the Boston Navy Yard on 18 January 1942 as the " Trumpeter " ( DE - 279 ) . She was not commissioned into the US Navy but was instead transferred to the Royal Navy under the Lend - Lease agreement and commissioned on 31 October 1943 . Royal Navy service . Initial training and refitting . After commissioning " Kempthorne " carried out training exercise in the Boston area in November before taking passage to Bermuda . Throughout December she carried out further exercises and shore training , after which she sailed to Halifax to join convoy HX - 274 bound for the UK . Also sailing to the UK as part of this convoy were here fellow sister corvettes HMS " Goodson " , HMS " Bligh " and HMS " Keats " , who had also been at Bermuda taking part in exercises . They sailed on 6 January as members of the convoy rather than as escorts as they lacked the necessary equipment and were not properly trained . On arrival in British waters on 21 January they were detached and sailed to Belfast . Here they underwent a refit to replace unsatisfactory US Navy equipment . The ships were fitted with an Admiralty design Gyro compass and depth charge arrangements , as well as receiving the latest sonar systems and a Royal Navy design radio direction finding outfit . The refit lasted until late February , and on its completion on 28 February " Kempthorne " was nominated to deploy with the 5th Escort Group in the Western Approaches Command . Further sea trials were carried out in March , followed by a period of work - up at Tobermory . She then joined the Group at Belfast in April , serving alongside her sisters HMS " Aylmer " , " Bickerton " , " Bligh " , " Grindall " , " Keats " , " Tyler " and " Goodson " . The senior officer of the group was Commander Donald MacIntyre , who had already achieved renown as the commander of the 2nd Escort Group . Deployed in the Atlantic . " Kempthorne " first deployed with the group on 21 April , helping to escort the westbound convoy ONS - 233 in appalling weather . They were then detached from the convoy on 26 April to join the aircraft carrier HMS " Vindex " and the ships of the 9th Escort Group deploying to defend convoys under threat of attack from German U - boat s . They made contact with " Vindex " and the group on 2 May . They refuelled from " Vindex " , whilst the ships of the 9th Group returned to Canada to refuel . " Kempthorne " , " Goodson " and " Keats " were then deployed as a close escort for " Vindex " . They remained with " Vindex " for several days and on 6 May " U - 765 " was detected by HMS " Bickerton " . Fairey Swordfish of 825 Naval Air Squadron were scrambled from " Vindex " whilst " Bligh " , " Bickerton " and " Aylmer " carried out depth charge attacks . These attacks brought " U - 765 " to the surface where she was engaged by surface gunfire from the attacking ships . A Swordfish then dropped two depth charges which sank " U - 765 " . Further refuelling of the escorts was carried out on 9 May and the ships returned to the Clyde with " Vindex " on 14 May . South Western Approaches . They then sailed to Belfast , where the group was nominated to support Operation Neptune , the Normandy Landings . The group was then deployed at Moelfre Bay in the Clyde area by 28 May . In early June the group moved to the South Western Approaches to intercept U - boats which might be attempting to enter the English Channel to interfere with the landings . During this time the group remained under the command of CinC Home Fleet and was not attached to the Naval Commander Expeditionary Force . Whilst " Kempthorne " was patrolling off The Lizard with the River class frigate HMS " Mourne " on 15 June , they came under attack from " U - 767 " , which torpedoed and sank " Mourne " . " Kempthorne " survived and on 26 June was present at the sinking of " U - 269 " by HMS " Bickerton " . " Bickerton " was then dispatched to Plymouth with the survivors of " U - 269 " , with HMS " Goodson " became the Senior Officer ’ s ship . Later that day the group was attacked by " U - 984 " and " Goodson " was seriously damaged by a torpedo hit . She was towed into port by HMS " Bligh " , but was found to be beyond economical repair . Attempted attack on the " Tirpitz " . " Kempthorne " and the group were released from their duties in the South West Approaches in July and returned to Belfast , were they were nominated for Home Fleet screening duties . After a period spent undergoing essential repairs and repainting , the group sailed to Scapa Flow on 12 August . On 18 August they were deployed as a screen for the escort carriers HMS " Nabob " and HMS " Trumpeter " for the planned air attacks on the German battleship " Tirpitz " , lying at anchor in Altenfjord , Norway . This was designated Operation Goodwood . Adverse weather hampered operations however and the attempt was aborted on 20 August . Whilst waiting in the area for an improvement in the weather , " Nabob " and " Bickerton " were attacked by " U - 354 " . " Nabob " was hit , but was able to return to Scapa Flow under her own steam . " Bickerton " was also critically damaged . " Kempthorne " took off casualties and non - essential personnel , but it was later decided to scuttle " Bickerton " and she was sunk three hours after being hit . The ships returned to the Clyde on 30 August and Commander MacIntyre was relieved by Commander BW Taylor . The group then returned to defending the Atlantic convoys with the Western Approaches Command in September . In October they were deployed to escort a military convoy from the UK to Naples and on their return in December they were deployed in the North Western Approaches to intercept U - boats that had been forced by the advancing allied armies to sail from the North German and Norwegian submarine bases to reach the Atlantic convoy routes . Irish Sea . In 1945 " Kempthorne " deployed with the group in the Irish Sea and the South Western Approaches . On 26 January the group was deployed to come to the assistance of the 4th Escort Group which was attacking " U - 1172 " . Both groups then launched surface attacks , before HMS " Aylmer " rammed and sank the submarine . They then began to search for another submarine known to be in the area , and posing a threat to the inbound convoy HX - 332 as it passed through the Irish Sea bound for Liverpool . The submarine , " U1051 " was detected on 27 January by HMS " Keats " and then sunk by HMS " Bligh " , " Keats " and " Tyler " . " Kempthorne " remained deployed with the group in the North Western Approaches throughout February and March 1945 , followed by a period off the west of Ireland and the north west of Scotland in April . In May 1945 , she was one of two British warships which presided over the surrender of the German U - boat s at Trondheim , Norway . She was then nominated to be returned early to the US and was paid off by June . Decommissioning and scrapping . " Kempthorne " was returned to the custody of the United States on 20 August 1945 and was commissioned in the United States Navy the same day for the voyage home . She arrived at Philadelphia on 8 September 1945 and was decommissioned at the navy yard there on 17 October . She was struck from the U . S . Navy list on 1 November 1945 and scrapped by 28 May 1946 .