Observational ones yes, but not those used in the forces. You cant really see that far at depth, so they 'see' using sonar.
Submarines don't have windows, at least not any that are used for viewing outside of the hull while submerged. They are used in some submarines as bridge viewing windows, but they're subjected to ambient sea pressure when the boat submerges, not direct sea pressure like the hull is.
Yes, extremely thick plate glass has been used for windows, and glass is also utilized for external cameras.
1. Ballistic submarines 2. Attack submarines
Boats, Subs, Submarines, Home.
Submarines - poem - was created in 1917.
Dallas Submarines was created in 1920.
One of our Submarines was created in 1982.
Yes, North Korea has submarines
Argentina had diesel-electric submarines while the British had nuclear-powered submarines.
USA has the most nuclear submarines
All submarines can sink. Some can return to the surface.
submarines dont sail idiot