Determine required sound signaling equipment by vessel length per COLREGS Rule 33
Input Parameters
Results
--
Whistle Required
--
Bell Required
--
Gong Required
--
Whistle Frequency
Hz
Reference
COLREGS Rule 33 - Sound Signal Equipment:
<12m: Any sound device
12-20m: Whistle
20-75m: Whistle + Bell (200mm+)
75-100m: Whistle + Bell (300mm+) + Gong
Rule 35: Restricted visibility signals every 2 min