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A submarine (or sub) is a watercraft capable of independent operation underwater. (It differs from a submersible, which has more limited underwater capability.) [1] The term “submarine” is also sometimes used historically or informally to refer to remotely operated vehicles and robots, or to medium-sized or smaller vessels (such as the midget submarine and the wet sub).
The US Navy's newest submarine program is expected to run $17 billion over its budget through the end of the decade as problems with once-smooth submarine construction deepen, a key House lawmaker ...
The history of the submarine goes back to antiquity. Humanity has employed a variety of methods to travel underwater for exploration, recreation, research and significantly, warfare. While early attempts, such as those by Alexander the Great, were rudimentary, the advent of new propulsion systems, fuels, and sonar, propelled an increase in ...
Submarines in the United States Navy. There are three major types of submarines in the United States Navy: ballistic missile submarines, attack submarines, and cruise missile submarines. All submarines currently in the U.S. Navy are nuclear-powered. Ballistic missile submarines have a single strategic mission of carrying nuclear submarine ...
One of the final messages from the five-person crew of the Titan submersible before it imploded, killing all inside, was "all good here", a hearing has revealed. Investigators with the US Coast ...
Foundered in bad weather in 1863. First submarine of the United States Navy. Intelligent Whale. Experimental submarine built in 1863, acquired by the US Navy in 1869 and abandoned in 1873. DSV-0. Trieste. First submarine which reached the Challenger Deep by Swiss Jacques Piccard and US Navy Lieutenant Don Walsh in 1960.
Type 212 submarine. Builders: Germany / Italy; Displacement: 1,830/2,500 tons ("A" or "CD" variant) Operators: German Navy: 6 in service (A), 2 more ordered (CD) Marina Militare: 4 in service (A), 3 more ordered with option for a fourth (A) – known as the Todaro-class Royal Norwegian Navy: 4 ordered (CD) Type 214 submarine. Builder: Germany
Unrestricted submarine warfare. German U-boat U-14 (early 1910s) Unrestricted submarine warfare is a type of naval warfare in which submarines sink merchant ships such as freighters and tankers without warning. The use of unrestricted submarine warfare has had significant impacts on international relations in regards to both the First World War ...