| |
Maneuvering and Warning Signals, Continued
Understanding
Vessels in sight of one another are approaching each other and either
the Intentions of
vessel fails to understand the intentions or actions of the other, or is in
Another Vessel
doubt whether sufficient action is being taken by the other vessel to
avoid collision, the vessel in doubt must immediately indicate such
doubt by giving at least five short, rapid blasts on the whistle. Such
signal may be supplemented by a light signal of at least five short, rapid
flashes.
Vessels nearing a bend or an area of a channel or fairway where other
vessels may be obscured by an intervening obstruction must sound one
prolonged blast. Such signal must be answered with a prolonged blast
by any approaching vessel that may be within hearing around the bend
or behind the intervening obstruction.
Signals
Required by
Rule 34 of
Navigation
Rules
The following table lists the required sound signals required between
vessels as stated in rule 34 of the Navigation Rules. The signals are
made with the ship’s whistle or the VHF radio. When using the VHF
radio to exchange signals, use the words 1 whistle equals 1 short blast
and the words 2 whistles equal 2 short blasts.
The International Rules do not require a reply from the receiving vessel
except when being overtaken by another vessel, where if in agreement
the overtaken vessel will sound 1 prolonged, 1 short, 1 prolonged, and
1 short blast in that order. The Inland Rules require the receiving
vessel, if in agreement with the sending vessel, to sound the same signal
in return. If, for any cause, the receiving vessel is in doubt of the
proposed maneuver, the receiving vessel will sound 5 short blasts.
Signal
Condition
Meaning
1 short blast
Within l/2 mile of another Inland: I intend to leave you on my
vessel.
port side.
When in sight of each
Int’l: I am altering my course to
other.
starboard.
2 short blasts
Within l/2 mile of another Inland: I intend to leave you on my
vessel.
starboard side.
When in sight of each
Int’l: I am altering my course to
other.
port.
3 short blasts
Within l/2 mile of another
Inland and Int’l: I am operating
vessel.
astern propulsion.
4-44
|
