| Shipwrecks |
- 1 Mar: USS Hannibal
- 2 Mar: U-3519
- 3 Mar: HMT Southern Flower, HMAS Steady Hour
- 4 Mar: U-3508
- 5 Mar: Nagara Maru
- 6 Mar: Albert Ballin, Z28
- 7 Mar: U-1302
- 10 Mar: Amiral Charner, U-275, U-681
- 11 Mar: U-682
- 12 Mar: Sperrbrecher 18, USS Bass, U-260, V 315 Bris
- 13 Mar: HMS Sealion
- 13 Mar. Taber Park
- 14 Mar: Hugo Zeye, U-714, U-1021
- 15 Mar: USS Lancetfish
- 16 Mar: U-367
- 17 Mar: HMCS Guysborough
- 18 Mar: U-866, TA24
- 19 Mar: Empire Blessing, Suma, Samselbu
- 20 Mar: M18, Hakuyo Maru, HMS Lapwing
- 21 Mar: James Eagan Layne
- 23 Mar: Gneisenau, Ro-41, USS S-21
- 24 Mar: Tomozuru
- 26 Mar: HMAS Terka, U-399, U-1003, Zähringen
- 27 Mar: U-722, U-905
- 28 Mar: USS Skylark, USS Trigger
- 29 Mar: Cha-156, Kommandøren, U-1106, U-1169
- 30 Mar: Köln, U-96, U-348, U-350, U-429, U-430, U-870, U-884, U-965, U-1131, U-1167, U-2340, U-3508
- 31 Mar: Ha-60, I-8
- Unknown date: Ha-69, USS Kete, U-296
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