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Submarines have ballast tanks inside them that can be filled with water to make them sink.

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Q: Why can a submarine travel both on the surface of the water and underwater?
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Is a vessel that travels under water?

A submarine is a vessel that can travel both on the surface and under the water.


Why does the submarine float and submerge in water?

Submarines must be able to float to load and offload crew and cargo and to have repairs and maintenance. They are designed to submerge either for underwater exploration or to pass undetected by ships at the surface and planes and satellites above.


What is a difference between a boat and a submarine?

A submarine is a kind of boat. But regular boats only use the surface of the water while subs also can dive and travel below the surface.


Differences between a ship and a submarine?

a ship floats on the water and a submarine can go underwater and on top of the water


Where is the stolen submarine in Pokemon Sapphire?

It is almost exactly in between Sootopolis City and Ever Grande City on your map. Go there and dive underwater. Search around underwater and eventually you should find an underwater cave containing the submarine. When you find the submarine, head to the surface.


How can a submarine travel?

As of 2014, a submarine can travel between 49 and 52 miles per hour. The exact speed depends on the make of the sub and whether it is traveling on the surface or under water.


How do submarine volcanoes act underwater?

Submarine volcanoes act the same way on top of the surface of the earth as under the water. The only difference is that, unlike on top of the ocean, it explodes UNDERNEATH the water. Yes, that is the answer to your unexplainable question.


What is water travel?

water travel is traveling on/in a boat or a submarine.


How much of a nuclear submarine is under water when it has surfaced?

Approximately 4/5 or 3/4 of a boat remains underwater while it is on the surface, or around 75-80%.


Can submarine travel under water?

Yes they can!


Does a submarine have a large or small water resistance?

It depends on the submarine type and hull design. Older WWI and WWII Fleet submarines were specifically designed as surface ships with limited submergence capability - they primarily ran on the surface with their diesel engines, and submerged using their battery powered electric motors when attacking a surface vessel. This hull design made gave them a lower water resistance on the surface, but much higher underwater. Their speed underwater was almost half of what they could do on the surface. With modern submarines, the opposite is true. Submarines today are specifically designed for lower water resistance (higher speeds) underwater than they are on the surface. Top speed for most boats on the surface might approach 20 knots, but underwater they can do over 30 knots. The old Russian ALFA class submarines were known to do 45 knots submerged.


What was the under water warfare?

Well, there is no "The" underwater warfare, but there is underwater warfare. Underwater warfare is battle or warfare that takes place under the ocean, like in a submarine.