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maritime DC & PPE Information Center
personnel protection

Chemical Lights for Life Preservers (For submarine use)


NTTP 4-01.4 requires that personnel involved in Underway Replenishment operations shall wear a green chemical light on their life preservers. The green chemical light

 (NSN 6260-00-106-7478)  is  attached to the life preserver by using a shower curtain hook (NSN 7230-00-252-3394, See Figure 1).  The green chemical light is 4 inches long and lasts for 6 hours once activated.  The NSNs for the chemical light and shower hooks each provides a quantity of 100 units.

 On the MK-1 life preserver, the recommended locations for attaching the chemical light are on the zipper tab or through the hole on the distress marker light pocket (See figures 2 and 3).