Question 1

A vessel with operational radar must additionally take into account, among other things, the characteristics, efficiency and limitations of the radar equipment, the constraints imposed by the range scale in use, and the possibility that small vessels, ice and other floating objects may not be detected by radar at an adequate range.

Accepted Answer

True True. Rule 6(b) - radar improves situational awareness but also creates new risks if its limitations are not understood: an inappropriate range scale, sea clutter, or the simple fact that small/low targets may give a poor or no echo, can all lead to a false sense of security if not factored into the chosen speed.

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.