Exercise & Training  (ET) Mine Mk 56,
air launched, magnetic influenced.

The MK56 ASW mine  was developed in 1966. Most mines in today's are aircraft delivered to target. Mine hits water, hose fairing shears off, mine drops vertically to bottom, at set time case and anchor separate, case moors in horizontal position.

 Characteristics of the MK56 mine

Function: Destroy enemy shipping.
Type: Aircraft laid moored mine
Detection System: Total field magnetic exploder.
Dimensions: 22.4 inches x 114.3 inches 
Depth Range: Moderate depths
Weight: 2000 pounds 
Explosives:  360 pounds  HBX-3
Date Deployed: 1966
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