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The SM-2 has been designed and tested to pass the tough ANSI/UL 1196 and MSC.81(70) requirements. 3.2 Purpose This unit is a portable electronic floating strobe light which automatically rights itself and begins flashing when dropped into water. The SM-2 is designed to be carried aboard all vessels, as well as artificial islands and fixed structures. It is to be used as part of the required survival equipment complement. The light is used to mark a position in the water, particularly in a crew-o