A "Hatch" is the naval term for a door .
A submarine hatch can be opened fairly easily if the submarine is filled with water because the water pressure on each side of the hatch is equalized.
I opened the hatch on the submarine. I watched the egg hatch. The thieves got together to hatch a plan.
It can be. An escape hatch was installed in the submarine.
The submarine hatch forms a hermetic seal.
"Escape" on the escape hatch on the submarine
At first, water was pressing on the hatch from one side. When water was pressing equally on both sides, it was easy to open the hatch. Remember this if your car falls into the harbour.
To enter or exit (or escape from) a submarine you must locate a hatch in the pressure hull. There is usually a hatch near the bow, the stern, and amidships, and each is set atop a feature called an escape trunk. The escape trunk is a small "compartment" with an inner hatch, and it is set up to provide a way to "lock out" a group of submariners that is making an emergency exit under water. A torpedo tube might also be used to escape.
Through an air and water tight door called a hatch. These hatches are typically thick, round and rounded metal to withstand the sea water pressure at depth.
Yes and no - though water never enters the crew compartment, there are accesses known as escape trunks that are primarily designed for escape use by crews of a sunken submarine. However, they're also used for exit/entry by rescue divers/crew or SEAL teams. Each trunk has an outer and an inner hatch; the space between hatches is used to let water in to flood the trunk and to equalize the pressure to the surrounding sea pressure, in order to allow opening of the outer hatch. The trunk is accessed from the pressure hull (crew compartment) via the inner hatch, and then the inner hatch is sealed. The trunk is then flooded until the pressure is equalized, and then the occupants exit. After the occupants have exited and closed the outer hatch, the trunk is emptied of water using high pressure air. Once it's purged of water, the air pressure inside the trunk is then equalized with the air pressure inside the crew compartment, so the inner hatch can be opened again and the process restarted.
This is a very old joke, and refers to a worthless piece of equipment. "Screen Door" on a submarine refers to the in port hatch Security Screens, used to keep equipment, people, debris, bugs, etc. from entering the boat by accident (or to slow down a potential threat) while moored in port. If they were in place and the hatch still open, the boat would of course flood. Therefore, the term is a reference for any useless piece of gear.
You drag the word "submarine" itself onto the submarine. Then you wait for it to sink.
"Yellow Submarine"because my friend had to play it for a exam.