Question 1

You are in a narrow channel and intend to overtake a vessel ahead, which can only be done if the vessel being overtaken takes action to permit safe passing (Rule 9(e)). What signal sequence applies, and what must happen before you proceed?

Accepted Answer

You must indicate your intention by sounding two prolonged blasts followed by one short blast (intention to overtake on the starboard side) or two prolonged followed by two short blasts (port side); the vessel to be overtaken, if in agreement, sounds the same signal in return (prolonged-short, repeated pattern matching); if in doubt, she sounds the danger signal (five short blasts) — you must not proceed to overtake until the agreement signal is given Rule 9(e) sets out a specific signal-and-response exchange for overtaking in a narrow channel where the vessel ahead must cooperate (e.g. by moving over) to permit safe passing — overtaking must not proceed until agreement is signalled, and the danger signal indicates disagreement/doubt.

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.