Shallow diving submarines are used for reef watching in many parts of the world.
Most pleasure submarines are either personal watercraft with limited diving capability, or tourist submarines with limited depth capability.
A bathyscaphe is a self-propelled deep-sea diving submersible used for exploring the ocean depths.
It can do to a depth of 200 feet.
goggles and snorkel or an oxegen tank used for deep sea diving
They were only capable of going about 50-80 feet under. They were mostly used for spying.
During WW2, all the major countries involved used submarines.
They were used by submarines to navigate when not in open waters, They were also used by submarines and anti-submarine ships to locate enemy submarines.
Submarines todaee are used for underwater exploration,funn,new life underwater.
Nuclear energy is used to power most modern submarines
Wetsuits can be used in a variety of sports and activities. These include; diving, deep sea diving, surfing, body surfing, windsurfing, canoeing, white water rafting, and many other water sports.
submarines were used in WW1 and the weapons used were torpedos and a deck gun.