4 Jul 1943

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
  • 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
  • Submarine USS Thresher departed her patrol area bound for the Philippines. ww2dbase [Thresher | Celebes Sea | DS]



Please consider supporting us on Patreon. Even $1 per month will go a long way! Thank you.

Please help us spread the word:

 Reddit
 Bluesky
 Mastodon

Stay updated with WW2DB:

 RSS Feeds

Search WW2DB
Famous WW2 Quote
"All that silly talk about the advance of science and such leaves me cold. Give me peace and a retarded science."

Thomas Dodd, late 1945


Support Us

Please consider supporting us on Patreon. Even $1 a month will go a long way. Thank you!

Or, please support us by purchasing some WW2DB merchandise at TeeSpring, Thank you!