Question 1

At high relative closing speeds (e.g. two vessels each making 20+ knots toward each other), how does the concept of "ample time" under Rule 8 change in practical terms compared to a slow-closing situation?

Accepted Answer

At high closing speeds, the time available to assess the situation and take effective action shrinks rapidly — "ample time" in absolute terms (minutes) must be much earlier relative to when a close-quarters situation would otherwise develop, meaning risk assessment and decision-making need to begin at greater range/earlier than for a slow-closing encounter Rule 8's requirement for action "in ample time" is inherently relative to the rate at which a situation is developing — high closing speeds compress the available decision-making window in real terms, so effective compliance requires earlier recognition and action, not the same fixed timing regardless of 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.