Question 1

You are the stand-on vessel in a crossing situation under sail (Rule 12 governs two sailing vessels; assume here you are a sailing vessel crossing a power-driven vessel under Rule 18, which makes the power-driven vessel give-way). The give-way power-driven vessel takes early, substantial, and clearly visible action well in time. What should you do?

Accepted Answer

Continue to maintain your course and speed under Rule 17(a)(i), since the give-way vessel's action has resolved the close-quarters risk — while continuing to monitor the situation Rule 17(a)(i) is the default: the stand-on vessel maintains course and speed. The stand-on vessel only becomes entitled (17(a)(ii)) or obliged (17(b)) to take her own avoiding action if it becomes apparent the give-way vessel is not taking appropriate action, or if collision cannot be avoided by the give-way vessel's action alone. Unnecessary action by the stand-on vessel can itself create confusion and increase risk.

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.