Question 1

A vessel at anchor 50 metres or more in length must exhibit one all-round white light in the forepart and another at or near the stern, at a lower level than the forward light, and if she is 100 metres or more in length she must also use available working or equivalent lights to illuminate her decks.

Accepted Answer

True True. Rule 30(a) requires the fore-and-aft pair of all-round white lights for any vessel at anchor (the under-50m option in Rule 30(b) does not apply once she reaches 50m); Rule 30(c) then makes deck illumination compulsory once she reaches 100m, helping other vessels judge the heading and length of a large anchored vessel in the dark.

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.