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Under Rule 3 — General Definitions, what should a navigator remember?
A
Anchored vessels show a forward all-round white light + a lower one aft (≥50m); <50m may show a single all-round white.
B
Where it is impracticable for a seaplane to exhibit lights of the exact characteristics, it shall exhibit lights as closely similar as…
C
Same number of blasts means different things depending on duration — duration is part of the signal.
D
NUC status requires exceptional circumstances preventing manoeuvring.