Nummer: 02307
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 12.07.1940 |
| Time of attack : | 10:06 |
| Nationality of U-boat : | German |
| U-boat : | U 56 |
| Commander : | Harms |
| Grid : | AM 5349 |
| presumed target type : | Steam Freighter |
| presumed tonnage : | 15000 BRT |
| presumed result : | damaged ? |
| Number of torpedoes/mines : | 2- |
| Used weapon(s) : | Torpedo(es) |
| Date of observation : | 12.07.1940 |
| Nationality of target : | British |
| Actual type of target : | Troop Transport |
| Name of target : | Dunera |
| Year of launch : | 1937 |
| Actual tonnage : | 11162 BRT |
| Actual result : | target visibly missed |
| Position of target : | North Channel |
| Footnote : | "Dunera" (11.162 grt) was glanced by a torpedo which did not detonate. |
| updated on: | 00.00.0000 |
| Remark: | AP ex -DP |