Past or present could a submariner open a hatch while submerged, either on accident or on purpose? - Quora
![Manhole For Loading Onto The Crew Submarine. The Hatch Is Hermetically Battened Down, There Is A Red Wheel On The Cover To Rescue Sunken Submariners. Stock Photo, Picture And Royalty Free Image. Manhole For Loading Onto The Crew Submarine. The Hatch Is Hermetically Battened Down, There Is A Red Wheel On The Cover To Rescue Sunken Submariners. Stock Photo, Picture And Royalty Free Image.](https://previews.123rf.com/images/linchk/linchk1905/linchk190500065/126135255-pozzetto-per-il-carico-sul-sottomarino-dell-equipaggio-il-portello-%C3%A8-ermeticamente-steccato-c-%C3%A8-una-.jpg)
Manhole For Loading Onto The Crew Submarine. The Hatch Is Hermetically Battened Down, There Is A Red Wheel On The Cover To Rescue Sunken Submariners. Stock Photo, Picture And Royalty Free Image.
![Premium Photo | Steel door of a warship. locked submarine hatch metal door at the end of hallway navy. Premium Photo | Steel door of a warship. locked submarine hatch metal door at the end of hallway navy.](https://img.freepik.com/free-photo/steel-door-warship-locked-submarine-hatch-metal-door-end-hallway-navy_524378-235.jpg)