| Shipwrecks |
- 1 Sep: HMS Hurst Castle, Kehdingen, U-247
- 2 Sep: Empire Curzon, U-394
- 5 Sep: U-362
- 7 Sep: Shinyō Maru, (incident), Westfalen
- 8 Sep: Rex
- 9 Sep: Sava, U-484
- 10 Sep: U-20, U-23
- 11 Sep: Giulio Cesare, U-19
- 12 Sep: Korei Maru, Nankai Maru, USS Noa, Rakuyō Maru, Shikinami
- 13 Sep: USS Perry, USS Warrington
- 14 Sep: Irene Oldendorff
- 16 Sep: I-364
- 17 Sep: Un'yō
- 18 Sep: Dr. Heinrich Wiegand, Gyōkū Maru, Jun'yō Maru
- 19 Sep: Isoshima;U-407, U-867
- 21 Sep: China Maru, Hōfuku Maru, Katsuriki, Noshiro Maru, Satsuki
- 22 Sep: Drache
- 23 Sep: Taranto, U-859
- 24 Sep: Akitsushima, Siberia Maru, T-120, Yaeyama
- 25 Sep: USS Miantonomah
- 26 Sep: Aotaka, Ro-47, Saga, U-871
- 27 Sep: HMS Rockingham, Ural Maru
- 28 Sep: Dragoner
- 29 Sep: U-863
- 30 Sep: U-565, U-596, U-1062
- Unknown date: U-703, U-855, U-865, U-921
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