RULE 19: CONDUCT OF VESSELS IN RESTRICTED
VISIBILITY
(a)
This Rule applies to vessels not in
sight of one another when navigating in or near an area of restricted
visibility.
(b)
Every vessel shall proceed at a safe speed adapted to the
prevailing circumstances and conditions of restricted visibility.
A power-driven vessel shall have her engines ready for immediate
maneuver.
(c)
Every vessel shall have due regard to the prevailing circumstances
and conditions of restricted visibility when complying with the
Rules [of Section I of this Part / 4 through
10].
(d)
A vessel which detects by radar alone the presence of another
vessel shall determine if a close-quarters situation is developing
and/ [Intl] or risk of collision
exists. If so, she shall take avoiding action in ample time, provided
that when such action consists of an alteration in course, so far
as possible the following shall be avoided:
(i)
An alteration of course to port for a vessel forward of the
beam, other than for a vessel being overtaken;
(ii)
An alteration of course toward a vessel abeam or abaft the
beam.
(e)
Except where it has been determined that a risk of collision
does not exist, every vessel which hears apparently forward of her
beam the fog signal of another vessel, or which cannot avoid a close-quarters
situation with another vessel forward of her beam, shall reduce
her speed to be the minimum at which she can be kept on her course.
She shall if necessary take all her way off and in any event navigate
with extreme caution until danger of collision is over.
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