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Which practice should be avoided under Rule 25 — Sailing Vessels Underway and Vessels Under Oars?
A
Showing only the aground red lights and forgetting the anchor signals.
B
Assuming "whistle" means a literal whistle — it covers any prescribed horn/siren.
C
Using the basic manoeuvring blasts when the channel overtaking signals are required.
D
Confusing optional red/green masthead lights with required lights.