For sale on Ebay. The Mollusc was originally named Trinculu, and was launched on 20/11/1915, 750 tons, as a dockyard mooring vessel. She was renamed Mollusc in January 1916, when she was acquired by the Admiralty and classed as R.F.A. In December 1922 she was sold to the port authority of London and renamed Yantlet. She was broken up at Grays Essex in June 1955.