Page 129 - Collision Avoidance Rules Guide

required to avoid crossing ahead in this case and is likely to turn to
starboard, especially by day when she may have failed to recognise
the shapes displayed by the hampered vessel.
When vessels are in sight of one another a power-driven vessel
which alters course to port or to starboard, or operates astern propul-
sion, is required to indicate the manceuvre by the whistle signals
prescribed in Rule 34(a) and may supplement the sound signal with
the light signal referred to in Rule 34(b). It is particularly important
for both the give-way vessel and the stand-on vessel to make such
signals, when taking action at a relatively late stage, in order to
reduce the possibility of conflicting action being taken by the other
vessel.
In the Angelic Spirir-Y Mariner, 1994, it was held that the vessels
were crossing so as to involve risk of collision when they came into
sight of one another on courses of 307" and 143" and that it was the
duty of the Y Mariner to keep out of the way. The Angelic Spirit was
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