Manta bottom-influence mine

The Manta bottom-influence mine is a shallow-water sea mine designed to be laid by naval vessels, helicopters or divers. Its primary purpose is as an anti-landing mine designed to destroy or damage landing craft, small-to-medium tonnage vessels or occasionally large surface ships.

The Manta has a bottom-weighted, conical shape to prevent movement due to currents and avoid detection. It measures 3 ft 3 in (0.98 m) in diameter, 2 ft 8 in (0.8 m) wide and 1 ft 5 in (0.44 m) high. It...