The logic of CHECKMATE cannot be faulted.

Used defensively, in conjunction with existing conventional mines it can create an impassable barrier.

Provides a Force “multiplier” out of all proportion to its cost.

Lends itself to overt, covert, defensive or offensive deployment by sea or air with equal facility, and extreme flexibility.

The main element of the system, self burying has been proved by sea trials.

Multipath propagation problems associated with the transmission of underwater signals have been solved.