Abstract: An improved tactical knife comprises a first portion, including a pair of substantially identical projections, each one of the pair of substantially identical projections including a left sharpened curved side and a right sharpened curved side, the left sharpened curved side and the right sharpened curved side of each projection meeting to form a respective piercing point. Preferably, the first portion is structured and arranged such that an area between the projections forms a trap sufficient to hold and immobilize a human limb. The improved tactical knife further comprises a second portion, including a handle for holding the knife and a third portion, including a guard for preventing slippage, the third portion situate between the first portion and the second portion. Preferably, the area between the projections includes a separate, inwardly curved edge for cutting the human limb trapped therein.

Abstract: A distribution module for a boat or vehicle which distribution module includes at least one heat exchanger and inlet and outlet fittings for a plurality of water or coolant circuits. A pump is conveniently provided with the distribution module for zone heating and a mixing valve may be further provided for adjusting the temperature of potable water heated within the heat exchanger.