Nummer: 09713
| Area : | Western Area |
| Sea area : | Carribean Sea |
| Date of attack : | 20.05.1942 |
| Time of attack : | 13:21 |
| Nationality of U-boat : | German |
| U-boat : | U 155 |
| Commander : | Piening |
| Grid : | ED 9817 |
| presumed target type : | Tanker |
| presumed tonnage : | 8400 BRT |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | OT.1 |
| Date of observation : | 20.05.1942 |
| Time of observation : | 11:20 |
| Nationality of target : | Panamanian |
| Actual type of target : | Steam Tanker |
| Name of target : | Sylvan Arrow |
| Year of launch : | 1918 |
| Actual tonnage : | 7797 BRT |
| Actual result : | sunk |
| Position of target : | 11.25n 62.18w |
| Convoy : | OT.1 |
| Route of convoy : | New York - Trinidad - Northwest Africa |
| Remark to convoy : | Feb 1943, Jun 1944, tanker convoys |