| Name | Build year | Nationality | Bilde | Loss during WW2 |
|---|---|---|---|---|
| D/S Kaikorai | 1918 | Great Britain | ||
| M/S Kaikoura | 1937 | Great Britain | ||
| D/S Kalarand | 1906 | Great Britain | ||
| D/S Kalingo | 1927 | Great Britain | Torpedoed, 1943-1-18 | |
| D/S Karagola | 1917 | Great Britain | ||
| M/T Karen Knutsen | 1999 | Great Britain | ||
| M/T Kars | 1939 | Great Britain | Torpedoed, 1942-2-22 | |
| D/S Katie Moller | 1919 | Great Britain | ||
| Ketos | 1919 | Great Britain | ||
| T/S Kiangsu | 1921 | Great Britain | Hijacked, 1941-12-8 | |
| D/S Kingston Hill | 1940 | Great Britain | Torpedoed, 1941-6-8 | |
| D/S Kintore | 1903 | Great Britain | Ran aground, 1944-9-1 | |
| D/S Kirsten Mærsk | 1921 | Great Britain | ||
| D/S Kommetje | 1930 | Great Britain | ||
| M/S Koolinda | 1926 | Great Britain | ||
| D/S Koomilya | 1929 | Great Britain | ||
| D/S Kooringa | 1938 | Great Britain | ||
| D/S Koranton | 1920 | Great Britain | Torpedoed, 1941-3-27 | |
| D/S Kurdistan | 1928 | Great Britain | Torpedoed, 1941-12-12 | |
| D/S Kutsang | 1922 | Great Britain | ||
| D/S Kylegorm | 1914 | Great Britain | ||
| D/S Kylemount | 1906 | Great Britain |