Learning Flashcards for

Navigation RulesSound Signals

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Denis E. Vogelm/v Amble

© 2003

Directions:Click to move to the next slide, then click a second time to

see the correct answer. A third click takes you to the following slide. Speaking the correct answer aloud will aid

memory retention.

Denis E. Vogelm/v Amble

© 2003

Vessels in sight of each other

))One Short Blast

I am altering course to STARBOARD

Vessels in sight of each other

)) ))Two Short Blasts

I am altering course to PORT

Vessels in sight of each other

)) )) ))Three Short Blasts

I am operating ASTERN PROPULSION

Vessels in sight of each other

)) )) )) )) ))….Five or more Short Blasts

WAKE UP SIGNAL. One vessel not complying with rules, warning that actions

are not understood.

Vessels in sight of each other in a Narrow Channel or Fairway

))))) ))))) ))Two Long & One Short Blast

I intend to overtake on your STARBOARD side

Vessels in sight of each other in a Narrow Channel or Fairway

))))) ))))) )) ))Two Long & Two Short Blasts

I intend to overtake on your PORT side

Vessels in sight of each other in a Narrow Channel or Fairway

))))) )) ))))) ))One Long, One Short, One Long,

One Short Blast

Response to intent to pass meaning YES it is safe to pass

Vessels in sight of each other in a Narrow Channel or Fairway

)) )) )) )) ))…Five or more Short Blasts

In a passing situation, you feel it is NOT SAFE for the other boat to pass

Vessels approaching a BLIND CORNER, large ship, marina or typhoon shelter entrance.

)))))One Long Blast

Signal should be answered with same by approaching vessel in hearing distance

Power vessel making way

FOG Sound SignalsWhat is the signal used if you are a….

Long blast every 2 minutes or less

Power vessel NOT making way

Two long blasts every 2 minutes or less

Not under command, restricted or sailing

One long & two short every 2 minutes or less

Large vessel at anchorRapid bell for 5

seconds, gong at stern if 100+ m long

EndSound Signals

Denis E. Vogelm/v Amble

© 2003