Signal, Distress - Day and Night - Mk 13 Mod 0

Length, inches

5.12

Diameter, inches

Weight, pounds

6.4

General: Adapted for both day and night use, Hand Signal Mk 13 contains both the orange smoke canister for daylight and a flare pellet for darkness. Like the Smoke Signal AN-Mk 1 in appearance and operation, the Signal Mk 13 is small and is easily stowed in life-vest pockets, flight suits, or life rafts.

Description: The metal outer case is closed at both ends by a slodered cap to which is attached a pull ring. Removing the soldered cap pulls a brass wire attached to its bot-tom through a cup coated with a friction igniting compound. Depending on whether the "day" or "night" ring is pulled, the two ends of the case being distinctly so marked, the smoke mixture or the flare is ignited. Smoke emission time is approximately 18 seconds; flare burning time is 18 to 20 seconds. The average candlepower of the flare is 3,000 candles. Paper cups cover the pull ring on each end of the signal.

Operation: After the paper caup is removed from desired end, a quick pull is given on the ring. If the soldered cap fails to come off, bring the pull ring down over the side of the can, and use the ring as a lever to break the seal. Hold the signal at arm's length and 30° elevation while burning. After one end is used, the signal should be doused in water to cool the metal parts. It should then be retained for possible use of the other end. Each end is insulated and waterproofed from the other.

Remarks: Both ends of the Signal Mk 13 should never be ignited at the same time.

Figure 209. Signal, Distress - Day and Night - Mk 13 Mod 0