TM 55-1680-350-102-26. Fluorescein Sea Marker2-26.The fluorescein sea marker (27, fig. 2-1) is a sodium salt-type dye which is for usein making a yellow-green color of the seawater surrounding your raft to attract rescueaircraft. The marker dye is contained in a small, waterproof fabric packet and thereare two packets provided in the individual, overwater, survival kit. Each packet isequipped with a retaining tape for securing the dye packet to your person. Duringclear weather and calm seas, the sea marker is visible for about 1 hour at an altitudeof 3,000 feet, and a distance of 3 to 5 miles. However, rough seas will dissipate thesea marker very quickly and visibility from any altitude or distance shall be limited. Touse the sea marker, pull the marked "pack-opening" tab on the outside of the packetand disperse the packet contents in the water alongside your raft. For rapiddispersion of sea marker, apply vigorous agitation to the packet in the water.NOTETo conserve the sea marker, do not release the packetcontents until you are sure that a rescue aircraft is inyour immediate area.2-31
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