Table of Contents
What did the Japanese do to keep the torpedoes up in Pearl Harbor?
Key Points. The Japanese had to modify their Type 91 Modification 2 aerial torpedoes for the Pearl Harbor attack. They needed to limit the initial plunge so that the torpedoes would not strike the bottom mud. The big stabilizing fins at the rear of the tail cone were an older modification unrelated to this problem.
What was the purpose of a boom Defence net?
Folks, Net and Boom Defenses, Ordnance Pamphlet 636A, 1944, shows how Net and Boom defenses were used to protect ships and harbors from submarines and torpedoes during WW II.
What was the significance of the attack on Pearl Harbor?
The attack on Pearl Harbor was a surprise military strike by the Imperial Japanese Navy against the United States naval base at Pearl Harbor, in the United States Territory of Hawaii, on the morning of December 7, 1941. The attack led to the United States’ entry into World War II.
How did Admiral Yamamoto plan his attack on Pearl Harbor?
Yamamoto planned to send six of them 3,150 nautical miles across the vacant north Pacific and into battle off Hawaii. After outlining his attack in impeccable handwriting on three pages of high-quality paper in January 1941, Yamamoto sent it to a subordinate admiral, who shared it with a military pilot.
Did the Japanese have spies in Hawaii before Pearl Harbor?
Several foreign spies are known to have operated in Hawaii on behalf of the Japanese military before the Pearl Harbor attack. (Image credit: U.S. National Archives) Several foreign spies are known to have operated in Hawaii on behalf of the Japanese military before the Pearl Harbor attack.
Who was involved in the military planning for Pearl Harbor?
Military planning. Preliminary planning for an attack on Pearl Harbor to protect the move into the “Southern Resource Area” (the Japanese term for the Dutch East Indies and Southeast Asia generally) had begun very early in 1941 under the auspices of Admiral Isoroku Yamamoto, then commanding Japan’s Combined Fleet.