Whistle No. 2L Acceptable for use on Coast Guard certificated vessels 20 to 75 meters in length. Hear it! (pc) | Hear it! (mac) | Hear it! (realaudio)    Specifications Free air consumed (cubic ft./sec.)   .25 Net weight (lbs.) 11 Frequency cycles/sec. 292 Line size 3/8" db at 25 ft. 114 Audibility Distance Rating* 1 1/2 - 2 miles * Per Coast Guard Rating Method
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