| Name | Build year | Nationality | Bilde | Loss during WW2 |
|---|---|---|---|---|
| T/T T2 Moccasin Gap | 1945 | USA | ||
| D/S Mokihana | 1921 | USA | ||
| T/T Monocacy | 1943 | USA | ||
| D/S Montana | 1942 | USA | ||
| D/S Montanan | 1917 | USA | Torpedoed, 1943-6-3 | |
| T/S Monterey | 1932 | USA | ||
| T/T T2 Moors`s Fields | 1944 | USA | ||
| D/S Morgan Robertson | 1944 | USA | ||
| D/S Mormacrio | 1919 | USA | ||
| D/S Morrison R. Waite | 1942 | USA | ||
| D/S Moses Cleaveland | 1943 | USA | ||
| D/S Moses Rogers | 1942 | USA | ||
| T/T Mosoil | 1920 | USA | ||
| D/T Mostank | 1943 | USA | ||
| T/S Mount Evans | 1919 | USA | ||
| T/T T2 Murfreesboro | 1943 | USA | ||
| Barge / Lekter N : 45 | Unknown | USA | ||
| T/S Nashaba | 1921 | USA | Sunk by mine, 1945-2-26 | |
| D/S Negley D. Cochran | 1944 | USA | ||
| T/T Newberg | 1944 | USA | ||
| T/T New Ecota | 1945 | USA | ||
| M/S New Orleans | 1920 | USA | ||
| D/S Nicholas Biddle | 1942 | USA | ||
| D/S Nicholas Gilman | 1942 | USA | ||
| T/T T2 Ninty-Six | 1945 | USA |