Under what circumstances may the OOW leave the bridge unattended, even briefly, during a watch?

A. At any time, provided the autopilot is engaged

B. Only where the Master has assessed it as safe to do so in specific, defined circumstances (e.g. clear conditions, open waters, properly arranged brief relief), and never during restricted visibility, congested waters, or any situation requiring continuous vigilance — this is a Master-level risk decision, not one the OOW makes unilaterally as routine practice

C. Whenever the OOW judges it convenient, without reference to the Master

D. Only during daylight hours, regardless of traffic or visibility conditions

A. The tidal height at the time of transit to confirm sufficient under-keel clearance

B. The yacht's fuel consumption for that leg

C. The colour of the seabed shown on the chart

D. Only the distance to the next waypoint

A. Switch the ECDIS to standby mode and navigate by GPS position alone

B. Ignore it — ECDIS alarms are frequently false and can be left running

C. Assess the situation against the planned route and charted depths, take action to maintain safe water, and inform the Master if there is any doubt

D. Acknowledge and silence the alarm immediately so it does not distract the helmsman