Nummer: 25601a
| Area : | Mediterranean |
| Sea area : | North African Seaway |
| Date of attack : | 16.04.1944 |
| Time of attack : | 18:27 |
| Nationality of U-boat : | German |
| U-boat : | U 407 |
| Commander : | Korndörfer |
| Grid : | CO 5822 |
| presumed target type : | Steam Freighter |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | UGS.37 |
| Date of observation : | 16.04.1944 |
| Nationality of target : | American |
| Actual type of target : | Steam Freighter |
| Name of target : | Thomas G. Masaryk |
| Year of launch : | 1943 |
| Actual tonnage : | 7176 BRT |
| Actual result : | not repaired, total loss |
| Position of target : | 32.51n 23.00e |
| Footnote : | "Thomas G. Masaryk" was damaged and towed to Alexandria, but was declared a total loss. |
| related attacks : | Angriff 1 |
| Convoy : | UGS.37 |
| Route of convoy : | U.S.A. - Gibraltar (slow) |
| Remark to convoy : | Since Oct 1942, initially for Op. Torch, then to ports in Northwest-Africa |