Approximately 4/5 or 3/4 of a boat remains underwater while it is on the surface, or around 75-80%.
The cannon (gun) is mounted onto a mount. The mount is bolted onto the deck. The gun can go under-water; it simply has to be maintained when surfaced (cleaned & oiled).
When a subs surfaced, it's a regular ship. It displaces water (it's filled with air NOT WATER).
Submarine cables are only suitable for use under water, that is what they are made for.
A submarine is only used under water.
A nuclear powered submarine can remain submerged for as long as it has fuel rods and supplies for the crew.
A submarine is an underwater craft, or a word used to describe something that is under water. Here are a couple of sentences. The submarine moves with silent deliberation through the cold dark water. The submarine canyons posed problems when the search vessels began looking for the nuclear weapon that had been lost at sea.
The submarine is under water.
Submarine.
Yes they can!
it is a under water earthquake
In war a submarine can hide under the water and attack without being seen.
The USS Nautilus (SSN-571) was the US Navy's first nuclear powered submarine.