Page 28 - Collision Avoidance Rules Guide

bound to do so, and to exercise his best judgement to avoid the danger which
threatened. (Lord Herschell, 1890).

RULE 3
General Definitions
For the purpose of these Rules, except where the context
otherwise requires:
(a) The word ‘vessel’ includes every description of water craft,
including non-displacement craft, WIG craft and seaplanes,
used or capable of being used as a means of transportation
on water.
(b) The term ‘power-driven vessel’ means any vessel propelled
by machinery.
(c) The term ‘sailing vessel’ means any vessel under sail pro-
vided that propelling machinery, if fitted, is not being used.
(d) The term ‘vessel engaged in fishing’ means any vessel fishing
with nets, lines, trawls or other fishing apparatus which
restrict mansuvrability, but does not include a vessel fishing
with trolling lines or other fishing apparatus which do not
restrict mansuvrability.

(e) The word ‘seaplane’ includes any aircraft designed to
manmuvre on the water.
(f) The term ‘vessel not under command’ means a vessel which
through some exceptional circumstance is unable to mansuvre
as required by these Rules and is therefore unable to keep
out of the way of another vessel.
(g) The term ‘vessel restricted in her ability to mansuvre’ means
a vessel which from the nature of her work is restricted in
her ability to manmuvre as required by these Rules and is
therefore unable to keep out of the way of another vessel.
The term ‘vessel restricted in her ability to manmuvre’ shall
include but not be limited to:
(i) a vessel engaged in laying, servicing or picking up a
navigation mark, submarine cable or pipeline;

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