HMS Kempthorne (K483) was a of the Royal Navy and named after Captain (later Admiral Sir) John Kempthorne of 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 exercises 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, Nova Scotia to join convoy HX 274 bound for the UK. Also sailing to the UK as part of this convoy were her sister corvettes , and , which had also been at Bermuda taking part in exercises. She was then nominated to be returned early to the US and was paid off by June.