Confederate frame type torpedo

An example of the Confederate Type 7 Frame-fixed torpedo (mine). Some 28.5-inches long and 12.2-inches across, they weighed 440-pounds of which just 27 of that was black powder explosive charge. Using a Type G1A adjustable triple Rains-pattern primer style torpedo fuze, these cast iron mines were set into a wedge-shaped frame and typically laid in sets of three with the thought that, if the first was missed, a passing ship would possibly hit the second or third or, if spotting the last in the chain, attempt to back off and run over the first. The rebels used what Brig. Gen Gabriel J. Rains, head of the Confederate Torpedo Bureau, described as a “Torpedo Mortar Battery” at Mobile, some 60 feet long and 35 feet wide, constructed of these frame-type mine arrays. Towed into place once constructed, it was angled from the bottom of the sea bed with the fuzed shells facing just under the surface of the water at low tide. 

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