Page 160 - Collision Avoidance Rules Guide

PART C - LIGHTS AND SHAPES

RULE 20
App 1 i c a t io it
(a) Rules in this Part shall be complied with in all weathers.
(b) The Rules concerning lights shall be complied with from
sunset to sunrise, and during such times no other lights shall
be exhibited, except such lights as cannot be mistaken for the
lights specified in these Rules or do not impair their visibil-
ity or distinctive character, or interfere with the keeping of a
proper look-out.
(c) The lights prescribed by these Rules shall, if carried, also be
exhibited from sunrise to sunset in restricted visibility and
may be exhibited in all other circumstances when it is
deemed necessary.
(d) The Rules concerning shapes shall be complied with by day.
(e) The lights and shapes specified in these Rules shall comply
with the provisions of Annex I to these Regulations.

COMMENT:
This Rule corresponds to Rule 1 (b) of the 1960 Regulations.

All weathers
Even small vessels are expected to comply with the Rules concern-
ing lights and shapes in all weather conditions. If any lights are lost
or extinguished they must be replaced or repaired as soon as pos-
sible. Oil lanterns, which may be provided for use in emergencies,
should be properly maintained and kept ready for use. A delay in
attending to lights or shapes in severe weather conditions because of
the danger to personnel may be justified but should be recorded in the
official log book.

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