"One day when our Rescue tug was berthed in Portland,

I looked across the water from our dock and saw the launching of a big 10,000 ton liberty ship sliding down the ways into the water. 

It was quite a sight to see such a large piece of machinery slip down the ways of the shipyard into the water where it was retrieved by two small yard tugs." YN2, April 1943 on Rescue Tug-7

S.S. Thomas Hooker (United States) in Convoy ONS 168: The Liberty ship started to break in two in the Atlantic Ocean ( 53°20'N 47°00'W). All 62 crew were rescued by HMS Pimpernel (Royal Navy). The drifting wreck was scuttled on 12 March by U-653 (  Kriegsmarine).