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A submarine is a ship that can travel underwater.
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.
U. S. submarines in World War II had a top surface speed of around 20-knots. Submerged, their top speed was around 9-knots, although at that speed they would exhaust their batteries after one hour and have to surface to recharge them.
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.
The fastest known nuclear submarine to date was the Russian ALFA class (NATO reporting name) submarine. Its design featured a lead-bismuth cooled reactor, enabling the reactor to be much smaller and powerful, making the boat design more streamlined and capable of reaching higher speeds. Its top sustained submerged speed was 41-42 knots, with speed burst capabilities of between 43 and 45 knots. I could reach top speed within a minute. Most boats can only maintain between 12-15 knots on the surface - this is because modern submarine designs are to allow them to travel much faster underwater than on the surface. The average for most boats is between 25 - 35 knots submerged, depending on class and screw configuration. Modern submarines are designed to go much faster underwater than on the surface - typically, top speed on the surface is around 17 knots for most boats.
A submarine is a vessel that can travel both on the surface and under the water.
Submarines have ballast tanks inside them that can be filled with water to make them sink.
A nuclear submarine is only limited by food it can travel as long as there foods
A submarine best fits the description.
Depending on the weight of each, the surface they are on and what materials are used.
water travel is traveling on/in a boat or a submarine.
President Dwight D. Eisenhower was the first sitting President to dive on board a nuclear submarine. On September 26, 1957, he took a 15 minute dive aboard USS Seawolf (SSN-575). Jimmy Carter was a submarine officer, before he was president and saw active duty on them from 1948 to 1952 including service on one of the first nuclear subs. The first president reported to travel in a submarine was Teddy Roosevelt, but I do know if he was president then or if the submarine submerged with him on board.