Nummer: 21620a
| Area : | Baltic Sea |
| Sea area : | Gulf of Finland |
| Date of attack : | 21.09.1944 |
| Time of attack : | 08:30 |
| Nationality of U-boat : | German |
| U-boat : | U 242 |
| Commander : | Pancke |
| Grid : | AO 3513 |
| Number of torpedoes/mines : | 15 |
| Used weapon(s) : | Sea mine(s) |
| Position of target : | 59.57n / 24.18e-24.21e |
| Footnote : | U-242 laid 15 mines (type TMB) from 8.30h till 10.15h in grid AO 3513 (Coordinates: 59°56,8'N-50°57,3'N / 24°18'E-24°21°E) west of Traskon Island. Mine barrage named "Kuckucksei I". |
| Beitrag im ASS-Forum : Link |
| updated on: | 14.06.2022 |
| Remark: | LINK, QUAD, POS, FN |
| Changes: | 1) 14.06.2022 FMA-Hägar: Ergänzung Link & Fussnote 2) 14.06.2022 gem. Ritschel: Quadrat & Koordinaten geändert |