The diver’s knife has a stainless-steel blade, half of which is serrated. The knife has a sheath which may be worn either on the lifeline belt or strapped to the diver’s leg by means of two straps and buckles. The knife is approximately 220mm long; 50mm wide; 35mm depth. A belt extension piece (support loop) is provided to enable the knife and sheath to hang from the waist belt at a low position on the thigh. The knife handle has a hole in for the attachment of a lanyard to prevent the knife from being lost.