Bell Fog Signals
Before the USCG dropped the requirement for vessels less than 20 meters long to carry a bell they were required when anchored outside of an approved anchorage to ring a bell rapidly for 5 seconds at intervals of not more than a minute during periods of reduced visibility. Vessels aground were required to sound this same signal preceded and followed by 3 distinct strokes of the bell during periods of reduced visibility. That states would require carriage of a bell but not teach it's mariners the proper use of this instrument is sadly typical. If memory serves me correctly bells for vessels less than 12 meters were required to have a bell 200 MM in diameter with a striker weight in excess of 3% of the bell weight. Connecticut and Maine have followed USCG and Colregs.
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