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Operation Wigwam〔 involved a single test of the Mark 90 Betty nuclear bomb. It was conducted between ''Operation Teapot'' and ''Operation Redwing'' on May 14, 1955, about southwest of San Diego, California. 6,800 personnel aboard 30 ships were involved in ''Wigwam''. The purpose of ''Wigwam'' was to determine the vulnerability of submarines to deeply detonated nuclear weapons, and to evaluate the feasibility of using such weapons in a combat situation. The task force commander, Admiral John Sylvester, was embarked on the task force flagship . The test device was suspended by a cable under a barge. A six-mile tow line connected a fleet tug, the USS ''Tawasa'', and the shot barge itself. Suspended from the tow lines of other tugs were three miniature unmanned submarines named "Squaws", each packed with cameras and telemetry instruments. The time of detonation was 1300 hrs Pacific Time. The test was carried out without incident, and radiation effects were negligible. The device yielded 30 kilotons. Three personnel received doses of over 0.5 rems. The equipment intended for direct measurement of the explosion-generated underwater bubble was not operational at the time of the shot, but based on other measurements, the bubble's maximum radius was calculated as , and its pulsation period approximately 2.83 seconds. (See Scientific Director's Report) The United States test series summary table is here: United States' nuclear testing series. The detonations in the United States' ''Wigwam'' series are listed below: ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Operation Wigwam」の詳細全文を読む スポンサード リンク
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