"Saltash", named after the town of Saltash in south-east Cornwall, was built by Murdoch and Murray of Port Glasgow, launched 25 June 1918 and served through the last few months of World War I as well as through all of World War II. She was involved in the evacuation of Dunkirk, during which, on 1 June 1940, she took on board the crew of HMS "Havant", that ship having been heavily damaged by German aircraft after they had successfully evacuated some 3,000 troops themselves.