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In the Navy it was lack of any effective anti-submarine tactics & the Army lacked any meaningful capability in medium or heavy tanks. Plus their intelligence & diplomacy were abysmal.
How many submarines did Japan lose in ww2?
128 boats
Japan started the war with 63 ocean-going submarines (i.e., not including midgets), and completed 111 during the war, for a total of 174. However, three-quarters of these (128 boats) were lost during the conflict, a proportion of loss similar that experienced by Germany’s U-Boats.
During the war, Japan managed to sink about 1 million tons of merchant shipping (170 ships) with her 184 submarines, compared to 1.5 million tons for Britain (493 ships), 4.65 million tons for the US (1079 ships) and 14.5 million tons for Germany (2,000 ships) with her 1,000 U-Boats.
How many submarines did Japan lose?
The Japanese lost 29 aircraft and 5 midget submarines in the attack. One Japanese soldier was taken prisoner and 129 Japanese soldiers were killed. Out of all the Japanese ships that participated in the attack on Pearl Harbor only one, the Ushio, survived until the end of the war.
Why didn’t the US use submarines in ww2?
At the start of the war, the U.S. submarine fleet was ineffective, for multiple reasons: A high proportion of the submarines deployed against the Japanese were obsolete. U.S. boats were hampered by defects in their primary weapon, the Mark 14 torpedo. Poor training led to an excessive reliance on sonar.
How good was the Japanese navy in ww2?
The Imperial Japanese Navy in World War II, at the beginning of the Pacific War in December 1941, was the third most powerful navy in the world, and the naval air service was one of the most potent air forces in the world.
By May 1945, most of the Imperial Japanese Navy had been sunk and the remnants had taken refuge in Japan’s harbors. By July 1945, all but one of its capital ships had been sunk in raids by the United States Navy.