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Which answer is consistent with Rule 34 — Manoeuvring and Warning Signals?
A
Distress signals must only be used when assistance is genuinely required.
B
Local harbour and inland-water rules may supplement COLREG but should stay as close as possible to it.
C
Channel overtaking uses the prolonged-plus-short combinations, not the basic one- and two-blast signals.
D
A vessel still has to comply with the rest of COLREG unless a specific routing provision applies.