Nummer: 24723
| Area : | Mediterranean |
| Sea area : | North African Seaway |
| Date of attack : | 14.07.1943 |
| Time of attack : | 22:30 |
| Nationality of U-boat : | Italian |
| U-boat : | NICHELIO |
| Commander : | Celli |
| Grid : | Messina Str. |
| presumed target type : | MTB |
| presumed result : | sunk |
| Used weapon(s) : | Gunfire |
| Date of observation : | 14.07.1943 |
| Nationality of target : | British |
| Actual type of target : | MTB |
| Name of target : | MGB 641 |
| Year of launch : | 1942 |
| Actual tonnage : | 90 ts |
| Actual result : | target visibly missed |
| Position of target : | Messina Strait |
| Footnote : | It was a German shore battery that scored a direct hit on MTB 641. The crew, however, were savely recovered. |