Question 1

You checked the radar minutes ago and saw no returns nearby. You're now considering leaving the bridge briefly to help with a task on deck, on a steady course, in clear visibility. What does the GWENVIDIK/LE SQUALE II collision demonstrate about relying on that earlier radar check?

Accepted Answer

A radar check is a snapshot, not a standing guarantee — leaving the bridge unattended removes the ability to detect a developing close-quarters situation, even in clear visibility GWENVIDIK's skipper checked his radar, saw nothing, then left the bridge unattended to help sort fish — and collided with LE SQUALE II, which had closed the distance in the time he was below. Clear visibility (13nm in this case) doesn't substitute for an actual lookout being maintained; a radar picture is only valid for the moment it was taken.

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.