Question 1

A dredger working in a channel, with limited ability to get out of the way of passing traffic, may be a 'vessel restricted in her ability to manoeuvre' under Rule 3(g), entitled to the lights, shapes and priority of Rule 27(b).

Accepted Answer

True True. Dredging is one of the activities Rule 3(g) recognises as potentially restricting manoeuvrability - if the dredger genuinely cannot get out of the way, she may show RAM lights/shapes and other vessels must keep clear under Rule 18.

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.