4 Jul 1943
Dutch East Indies
Dutch East Indies
- While running submerged north of the Makassar Strait off Borneo, submarine USS Thresher ran up on a reef that brought her bow to the surface. Thresher was hard aground on the reef for 20 minutes before she was able to free herself. Damage was minimal. ww2dbase [Thresher | Celebes Sea | DS]
5 Jul 1943
Dutch East Indies
Dutch East Indies
- Submarine USS Thresher detected a tanker in the Celebes Sea and chased it for over 10 hours before firing four torpedoes in two different attacks. One torpedo hit the ship causing damage but the tanker remained afloat. ww2dbase [Thresher | Celebes Sea | DS]
6 Jul 1943
Dutch East Indies
Dutch East Indies
- Submarine USS Thresher departed her patrol area bound for the Philippines. ww2dbase [Thresher | Celebes Sea | DS]
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