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Which country's navy used submarines most effectively?

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Which country's navy used submarines most effectively?

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In the WW1, The Germany Navy used the submarines most effectively . During the war, Germany had a total of 350 submarines, and also had the development of the amount of submarine’s main combat weapon increased. Before the war, Germany only had 28 submarines, France had 38, America had about 50, but the Great Britain had the most, they had 76 submarines. Before the war, people did not recognize the use of what the submarines can do. However in 1914, the Germany’s attacked the Great Britain by just using a iron shelled submarine, and caused 1459 deaths and sank three 10,000 ton cruisers. The news spread out quickly and the people were shocked by what the submarines can do and they recognized the use of submarines.

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What technology was developed to sink submarines?

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What technology was developed to sink submarines?

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Military uses include attacking enemy surface ships (merchant and military), attacking other submarines, aircraft carrier protection, blockade running, ballistic missile submarines as part of a nuclear strike force.
In 1866 British engineer Robert Whitehead invented the first effective
torpedoes.

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U-boat, a German submarine. Germany was the first country to use submarines in war as substitutes for surface commerce raiders. In WWI German U-boats, though only with a number of 38,achieved many successes against British warships.

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Submarines affects the war by making it easier to attack enemies from under the water. As a result of this influence, Germany sank British’s ships. In addition, because of the submarine were able to hold more people, it was a much more effective than boats. It also Changed the war because of the unrestricted submarine warfare policy.