Nummer: 09914
| Area : | Western Area |
| Sea area : | Central Atlantic |
| Date of attack : | 28.05.1942 |
| Time of attack : | 06:30 |
| Nationality of U-boat : | German |
| U-boat : | U 155 |
| Commander : | Piening |
| Grid : | EE 4646 |
| presumed target type : | Steam Freighter |
| presumed tonnage : | 5000 BRT |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Date of last departure : | 26.05.1942 |
| Nationality of target : | Dutch |
| Actual type of target : | Steam Freighter |
| Name of target : | Poseidon |
| Year of launch : | 1921 |
| Actual tonnage : | 1928 BRT |
| Actual result : | sunk |
| Position of target : | Trinidad - New York |
| Footnote : | "Poseidon" departed from Trinidad on May 26th for New York. She was due to arrive on June 6th. When she did not, she was posted as missing effective of that date. |
| updated on: | 00.00.0000 |