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maritime DC & PPE Information Center
personnel protection

Submarine Inherently Buoyant Life Preserver (NSN 4220-01-485-1135 or NSN 4220-01-485-1138)

(For submarine use)

The inherently buoyant life preservers use plastic foam or fibrous glass flotation pads to provide the required buoyancy. The pads are contained in a vest or yoke style cover. The commercial version of this vest is a Coast Guard approved Type 1 life preserver. It has two straps for securing the life preserver, a hole for the safety harness D-ring, pockets for the distress marker light, whistle, sea dye marker, Man Overboard Indicator,  and a Velcro patch on the collar for attaching the distress marker light. The inherently buoyant life preserver is designed to turn most unconscious wearers face up. See Inherently Buoyant Life Preserver Tip 003 for AEL info.



For more information, see the Index.