High Quality Content by WIKIPEDIA articles! The ST Leukos was Irish Steam Trawler that operated off the coast of Ireland. She was lost with all hands on March 9, 1940 while fishing off Tory Island when the German submarine U-38 surfaced and opened fire with its deck gun. The Leukos and her crew of 11 were lost. As a neutral country, Irish ships, including the Leukos, were unarmed and clearly marked.