How were German U-boats able to stay underwater for long periods of time during World War II, without their hulls collapsing under water pressure? - Quora
![New battery-powered submarine has room for 120 partygoers to spend 24 hours under the waves : r/Futurology New battery-powered submarine has room for 120 partygoers to spend 24 hours under the waves : r/Futurology](https://external-preview.redd.it/nIHY4RvV0Weo2GIn3WFmIpmCPGKdNgd_aDP0BWNLQyI.jpg?width=640&crop=smart&auto=webp&s=9c684c110e4aa9be7eeebd0f33273ff1af877b25)
New battery-powered submarine has room for 120 partygoers to spend 24 hours under the waves : r/Futurology
![TIL that in 1921 a submarine ran out of fuel some 190 Km from Hawaii during searching of a lost tug boat. The submarine had a week's worth of ration on board TIL that in 1921 a submarine ran out of fuel some 190 Km from Hawaii during searching of a lost tug boat. The submarine had a week's worth of ration on board](https://external-preview.redd.it/IxKlGXZKrAQTHn3D-Tb79ddsaoDgjVtKf6dUp2fG3A8.jpg?width=640&crop=smart&auto=webp&s=31465e8f12e00bf56e111f4f4a7f5c882708baae)
TIL that in 1921 a submarine ran out of fuel some 190 Km from Hawaii during searching of a lost tug boat. The submarine had a week's worth of ration on board
If the Type XXI Uboat was manufactured earlier in WW2, would it have a profound impact on the course of WW2? - Quora
![Deep Water's U-Boat is about as detailed and immersive as you're likely to see in a WWII sub simulator | Mega Bears Fan Deep Water's U-Boat is about as detailed and immersive as you're likely to see in a WWII sub simulator | Mega Bears Fan](http://www.megabearsfan.net/image.axd/2022/1/UBoat-title-600x280.jpg)