Nummer: 09604
| Area : | Western Area |
| Sea area : | US East Coast |
| Date of attack : | 16.05.1942 |
| Time of attack : | 11:01 |
| Nationality of U-boat : | German |
| U-boat : | U 506 |
| Commander : | Würdemann |
| Grid : | DA 9521 |
| presumed target type : | Tanker |
| presumed tonnage : | 8000 BRT |
| presumed result : | damaged |
| Number of torpedoes/mines : | 1 |
| Used weapon(s) : | Torpedo(es) + Gunfire |
| Date of observation : | 16.05.1942 |
| Time of observation : | 09:12 |
| Nationality of target : | American |
| Actual type of target : | Steam Tanker |
| Name of target : | William C. McTarnahan |
| Year of launch : | 1941 |
| Actual tonnage : | 7302 BRT |
| Actual result : | damaged |
| Position of target : | 28.52n 90.20w |
| Footnote : | U-506 reported one torpedo hit on the ship and left her sinking after some gunfire. |
| updated on: | 00.00.0000 |
| Remark: | TA |