Sound and Light Signals

Sound and Light Signals Definitions Rules 32 33 Manoeuvring and warning signals Rule 34 When vessels are in sight of one another, a power-driven vessel underway, when manoeuvring as authorized or required by these Rules, shall indicate that manoeuvre by the following signals on her whistle º One short blast I am altering my course to starboard º º Two short blasts I am altering my course to port º º º Three short blasts I am operating astern propulsion a vessel intending to overtake another The vessel about to be overtaken I intend to overtake you on your starboard side - - º I intend to overtake you on your port side - - º º Agree - º - º A vessel fails to understand the intentions or actions of the other at least five short and rapid blasts º º º º º A vessel nearing a bend or an area of a channel one prolonged blast - restricted visibility VESSEL BLAST INTERVAL Minutes A power-driven vessel making way through the water - 2 A power-driven vessel underway but stopped and making no way through the water - - 2 interval of about 2 seconds between the blasts A NUC, Restricted i ability ... , a sailing vessel, fishing and towing - º º 2 A vessel towed - º º º 2 After the signal made by the towing vessel Pushing vessel and a vessel being pushed Regarded as One power-driven vessel Anchored less then 100 meter Bell 5 sec. 1 Anchored 100 meter or more Bell 5 sec. Gong 5 sec. 1 Bell forepart Gong - aft. Anchored v/l may in addition º - º A vessel aground Bell 3 strokes Bell 5 sec. Bell 3 strokes Gong 5 sec. 1 A vessel of less than 12 metres Other efficient sound 2 Pilot v/l may in addition º º º º