Ruth Lee Water Rescue Training Manikins, Rescue Dummies, Rescue Manikins, and Rescue Mannequins. Originally developed in conjunction with the Royal National Lifeboat Institute (R.N.L.I), Greater Manchester Fire Service Water Incident Support Section and the British Navy; these dummies perfectly simulate unconscious casualties in water. Recently, the Water Rescue dummy was improved with new tapered arms with a 'wrist' that allows a rescuer to grasp the wrist as they would with a real casu