Nummer: 16520a
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 05.05.1943 |
| Time of attack : | 16:34 |
| Nationality of U-boat : | German |
| U-boat : | U 584 |
| Commander : | Deecke |
| Grid : | AJ 5965 |
| presumed target type : | Steam Freighter |
| presumed tonnage : | 7000 BRT |
| presumed result : | sunk |
| Number of torpedoes/mines : | 4- |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | ONS.5 s |
| Date of observation : | 05.05.1943 |
| Time of observation : | 14:53 |
| Nationality of target : | American |
| Actual type of target : | Steam Freighter |
| Name of target : | West Madaket |
| Year of launch : | 1918 |
| Actual tonnage : | 5565 BRT |
| Actual result : | sunk |
| Position of target : | 54.47n 44.12w |
| Footnote : | U-584 fired a 4-torpedo spread and reported the sinking of two ships. She attacked a straggler group escorted by the corvette HMS "Pink", but sank only "West Madaket". |
| related attacks : | Angriff 1 |
| Convoy : | ONS.5 s |
| Route of convoy : | United Kingdom - North America (slow) |
| Remark to convoy : | 2nd series: Apr 1943 with new numbering (counter traffic SC) |