Helicopter Egress System for Passengers.
The LPU-41/P is a U.S. Marine Corp (USMC), yoke-style, helicopter passenger transport life preserver. It is designed to be compatible with varying gear and capable of floating a fully combat loaded marine. The LPU-41/P HESP was also selected by the USMC for use on Assault Amphibious Vehicles (AAV) to enhance waterborne egress and flotation capabilities, providing soldiers protection against the threat of a rapidly sinking AAV.