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Nuclear propulsion was first used by the US Navy for powering submarines in the mid-20th century.
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Submarines had an important role in naval warfare as early as World War I.
Submarines submerge and surface by changing the average density of the hull.
The Apache attack helicopter, named after an American Indian tribe, was developed for the United States Army.
Commercial maritime routes of container ships form a global network.
Hovercraft are capable of travelling at high speed above the surface of water.
This animation demonstrates how sonar works.
The submarine designed by the Spanish inventor Narcís Monturiol was a pioneering work in the history of underwater navigation.
The medieval Arab inventor, Hassan Al Rammah designed the world's first operating torpedo.
Oil tankers appeared in the late 19th century; today they are among the largest ships.
A mobile, nuclear-capable ballistic missile developed at the end of the Cold War.
HMS Dreadnought revolutionised battleship-building in the 20th century.
RMS Titanic was the largest passenger ship at the beginning of the 20th century.
From the 1940s, the increasingly large aircraft carriers became the masters of the oceans.