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Maneuvering and Warning Signals, Continued
Signal
Condition
2 prolonged
Overtaking in narrow
blasts followed
channel or fairway.
by 1 short blast
2 prolonged
Overtaking in narrow
blasts followed
channel or fairway.
Meaning
Int’l: I intend to overtake you on
your starboard side.
Int’l:
I intend to overtake you on
your port side.
by 2 short blasts
1 short blast
Overtaking.
Inland: I intend to overtake you on
your starboard side.
2 short blasts
Overtaking.
Inland: I intend to overtake you on
your port side.
1 prolonged
Leaving a dock or berth.
Inland only: I am getting under way
blast
from a dock or berth.
Signals
Required by
Rule 35 of
Navigation
Rules
Rule 35 of the Navigation Rules gives the signals required by vessels
during periods of restricted visibility. The VHF radio cannot be used to
send signals as prescribed by rule 35. The following table lists the
required sound signals required between vessels as stated in rule 35 of
the Navigation Rules. These signals are the same for both the Inland
and International Rules.
Signal
Condition
1 prolonged blast
Power-driven vessel making way.
Interval
Not more than
every 2 minutes.
2 prolonged blasts; 2 Power-driven vessel under way but
Not more than
seconds apart
stopped and making no way.
every 2 minutes.
1 prolonged blast
Not under command; a vessel restricted in Not more than
followed by 2 short
its ability to maneuver, under way, or at
every 2 minutes.
blasts
anchor; a vessel engaged in fishing
whether under way or at anchor; a vessel
engaged in towing or pushing a vessel
Rapid ringing bell
At anchor. Note: In vessels over 100
Not more than
for 5 seconds
meters in length, the bell will be sounded every 1 minute.
followed by 1 short,
near the bow followed by a 5-second
1 prolonged, and 1
gong signal from the stem.
short blast.
Note: Rule 35 also covers signals for towing and special circumstances. Refer to the
Navigation Rules for complete details.
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