Question 1

A vessel navigating in fog hears another vessel's fog signal forward of her beam, but her radar has not yet resolved whether risk of collision exists. Under Rule 19(e), she may maintain her speed and course until the radar picture clarifies.

Accepted Answer

False False. Rule 19(e) does not wait for radar confirmation - on hearing a fog signal apparently forward of the beam (or where a close-quarters situation with a forward contact cannot be avoided), the vessel must reduce to minimum speed and, if necessary, take all way off, navigating with extreme caution until risk of collision is over.

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.