Hi, link to a tug site and you may find an answer to your query. Ken.Lister said:I served as 'Sparks' aboard Swin in 1952. RFA salvage tug. We were picking up wreckage off Sheerness. News and a photo much appreciated
HMS Swin part of UK salvage unit. Along with HMS Uplifter was commissioned to clear Nasser's block ships. Commanded by Lt. Cmdr. Scrivener left Chatham late Oct.56. With a max speed of 8 knots it took some time to make Tobruk. Sailed for Port Said but after a day at sea was recalled to Tobruk. Stayed Christmas & New Year. Was then told that for political reasons the salvage contracts had been given to the Germans. Returned UK and paid off at Plymouth Feb.67. I believe HMS Uplifter was returned from Port Said.