Question 1

Rule 36 permits the use of signals to attract attention (e.g. a searchlight or flashing light). What caution does the rule attach to such signals?

Accepted Answer

Any light used to attract attention must not be such as can be mistaken for, or be confused with, any aid to navigation, and must not embarrass any vessel — directing a searchlight beam in a way that interferes with another vessel's vision should be avoided Rule 36 allows attention-getting signals but cautions against confusion with aids to navigation, and against "embarrassing" (e.g. blinding) other vessels — a searchlight shone directly at another vessel's bridge can itself create a hazard.

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.