IRPCS Part 4 - Sound & Light Signals Flashcards
What is the signal for ‘I am altering course to starboard’?
One short blast.
What is the signal for ‘I am altering course to port’?
Two short blasts.
What is the signal for ‘I am operating astern propulsion’?
Three short blasts.
What is the signal for danger or doubt?
Five or more short blasts.
What is the signal for a vessel nearing a bend in a channel?
One prolonged blast.
What is the sound signal for a vessel at anchor in restricted visibility?
One short, one prolonged, one short blast every 2 minutes.
What is the sound signal for a power-driven vessel underway in restricted visibility?
One prolonged blast every 2 minutes.
What is the sound signal for a vessel not under command or constrained by her draught?
One prolonged followed by two short blasts every 2 minutes.
What is the sound signal for a sailing vessel in fog?
One prolonged followed by two short blasts every 2 minutes.
What is the signal for a vessel aground?
Three strokes on the bell, followed by rapid ringing of the bell, followed by three strokes.
What does one prolonged blast mean in a traffic separation scheme?
Warning: approaching a bend or exiting a berth.
What is the signal for ‘I intend to overtake you on your starboard side’?
Two prolonged blasts followed by one short blast.
What is the signal for ‘I intend to overtake you on your port side’?
Two prolonged blasts followed by two short blasts.
What is the international distress signal using sound?
Continuous sounding of any fog-signalling apparatus.
What does one short blast of light signal indicate?
Alteration of course to starboard.
