There are some nuances to inland whistle signals which seem to be getting
overlooked in this discussion.  If you are not in a narrow channel or
fairway, whistle signals do not apply for overtaking situations.  You just
pass while remaining clear.

When overtaking signals apply and you actually use your horn, don't forget
the two prolonged blasts before the single or double short as applicable;
otherwise you are just blowing your own horn.  :)

Copied from the INLAND portion of my electronic version of RULE 34 of the
COLREGS:

(c) When in sight of one another in a narrow channel or fairway:
(i) a vessel intending to overtake another shall in compliance with Rule
9(e)(i) indicate her intention by the following signals on her whistle:
? two prolonged blasts followed by one short blast to mean “I intend
to overtake you on your starboard side”;
? two prolonged blasts followed by two short blasts to mean “I
intend to overtake you on your port side”.

Rich Gano
Calypso (GB42 Hull # 295)
Panama City area, FL

Rich,

The electronic version of the COLREGS quoted in your e-mail must be in
error.  The reference to narrow channels,  which is Rule 9, further
references Rule 34 regarding sound signals.  Rule 34 covers both
international and inland waters, western rivers and the Great Lakes.  The
two prolonged blasts, apply to international navigation rules, hence
designated for use outside the COLREGS demarcation lines (CFR 33 Part 80).

Incidentally, if sound signals are used in an overtaking situation, inland
rules specify the vessel being overtaken to sound a similar sequence if in
agreement.  International rules further complicate the mariner's obligations
by requiring the overtaken vessel to sound agreement with a long, short,
long, short response.

Terry

From: "Rich Gano" richgano@gmail.com
To: "Great Loop List" great-loop@lists.trawlering.com
Sent: Friday, January 27, 2012 9:23 AM
Subject: GL: Inland Whistle signals

There are some nuances to inland whistle signals which seem to be getting
overlooked in this discussion.  If you are not in a narrow channel or
fairway, whistle signals do not apply for overtaking situations.  You just
pass while remaining clear.

When overtaking signals apply and you actually use your horn, don't forget
the two prolonged blasts before the single or double short as applicable;
otherwise you are just blowing your own horn.  :)

Copied from the INLAND portion of my electronic version of RULE 34 of the
COLREGS:

(c) When in sight of one another in a narrow channel or fairway:
(i) a vessel intending to overtake another shall in compliance with Rule
9(e)(i) indicate her intention by the following signals on her whistle:
? two prolonged blasts followed by one short blast to mean "I intend
to overtake you on your starboard side";
? two prolonged blasts followed by two short blasts to mean "I
intend to overtake you on your port side".

Rich Gano
Calypso (GB42 Hull # 295)
Panama City area, FL

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