Sound signals for vessels in restricted visibility whether underway at anchor / aground, day or night, are the subject of Rule 35 (COLREGS). ...

Powered vessels underway and in sight of other vessels use sound signals to indicate maneuvers. What do they mean and how are they used? ...

Contrary to popular belief, the phrase ‘right of way’ is never mentioned once in the International Regulations for Preventing Collisions at Sea (IRPCS). Prior to 1977, vessels were called either burdened or privileged in potential collision situations, which may have ...