The ship was built by the Ailsa Shipbuilding Company, Troon, with engines provided by Thornycroft of Woolston. She was laid down on 17 December 1936 and launched on 22 December 1937.[1] As a survey ship she differed from the others in her class by having a larger bridge, and a surveying chartroom aft. During the war the ship was armed with a single 12-pounder anti-aircraft gun forward.
Franklin was commissioned on 17 August 1938, and carried out surveys off the Thames Estuary. In June 1939 she was sent to survey St. Lewis Inlet, Newfoundland, but in August was ordered home in anticipation of the outbreak of World War II. During the war she carried out surveys around the coast of the UK, mostly in connection with the laying of minefields. In June 1944, under the command of Lt.Cdr. Edmund George Irving,[2] she was deployed off the French coast, following the Normandy landings, surveying ports as they fell to Allied forces. By November she was surveying the entrance to the Scheldt.[1]
Following VE Day on 8 May 1945, she carried out wreck and mine clearance surveys in German ports, finally returning to the UK in October 1945. Franklin remained in service, mainly operating off the eastern coast of England, until decommissioned in January 1953.[3] She was then placed in Reserve, until placed on the Disposal List, and sold for breaking up by Clayton and Davie, Dunston-on-Tyne. She was towed to the breaker's yard in February 1956.[1]