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Page Title: MK 6 Marine Location Marker -Continued
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Figure 6-6.–The Mk 58 Mod 1 marine location marker. sealed with tape. The pull-wire ring, also at the emission end, is also covered with tape. The Mk 6 signal has a direct-firing ignition system. Ignition results from pulling the pull ring. The pull ring is pulled by hand, and the device is thrown into the water immediately. The pull wire ignites a 90-second delay fuse that ignites the quick match at the top of the first of four candles. The quick match ignites the first candle starting mix, which, in turn, initiates burning of that candle. Expanding gases of combustion force the cap and tape from the emission hole, allowing smoke and flame to be emitted. When the first candle is nearly burned out, a transfer fuse carries the ignition to the quick match of the next candle in series. This process continues until all four candles have burned. The yellow flame and gray-white smoke are produced for at least 40 minutes. After the tear-strip on the shipping container has been  removed,  the  following  rules  apply: 1.  The  tape  over  the  pull  ring  should  not  be disturbed  until  immediately  before  hand-launching  the signal. This tape not only prevents an accidental pull on the pull ring but also protects the igniter assembly from moisture,  which  might  render  the  signal  useless. WARNING This signal is initiated by the physical movement of a friction wire through ignition compound. Extreme care must be taken to prevent tension of the pull ring during all handling  operations. 2.   If this device is prepared for launching and is not launched, the pull ring should be securely retaped into position at the top of the signal without exerting any pulling force on the pull-wire igniter. 3.   Under no circumstances should these signals be stowed or restowed with their pull rings exposed or with any wires, strings, or other material of any kind joined to their pull rings. All safety precautions pertaining to this signal must be observed. In addition, the following specific rules apply: Do not remove the tape over the pull ring until immediately  before  launching. The Mk 6 signal should be thrown over the side immediately after pulling the pull ring. This device 6-10

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