Question 1

You are navigating in a narrow channel and a vessel ahead, also in the channel, is impeding the channel by anchoring in a position that obstructs the fairway unnecessarily. What does Rule 9(g) say about this?

Accepted Answer

A vessel shall, if the circumstances of the case admit, avoid anchoring in a narrow channel — this is a qualified prohibition (recognising emergencies or unavoidable circumstances may require anchoring), but routine/unnecessary anchoring that obstructs a narrow channel is contrary to Rule 9(g) Rule 9(g) — "if the circumstances of the case admit" gives flexibility for genuine necessity (e.g. emergency, mechanical failure) while making clear that anchoring in a narrow channel should otherwise be avoided given the obstruction it creates for other traffic confined to that channel.

Question 2

Rule 5 (Look-out) requires every vessel at all times to maintain a proper look-out by sight and hearing, as well as by all available means appropriate in the prevailing circumstances and conditions — and this duty applies even when the vessel is at anchor in a busy anchorage.

Accepted Answer

True True. Rule 5 applies 'at all times' and to 'every vessel'. A vessel at anchor in a busy anchorage still needs an effective look-out to detect drifting vessels, dragging anchors, or approaching traffic that may pose a risk of collision or contact.

Question 3

Under Rule 6 (Safe Speed), a vessel fitted with a fully operational radar and ARPA never needs to reduce speed in restricted visibility, because the equipment guarantees early detection of other vessels.

Accepted Answer

False False. Rule 6 explicitly lists radar capability as one factor to consider, but also requires accounting for the state of visibility, traffic density, manoeuvrability, and the limitations of radar (range scale, sea/rain clutter, blind sectors). Even a vessel with excellent radar must proceed at a speed that allows proper and effective action to avoid collision and to be stopped within a distance appropriate to the prevailing circumstances.