While planning a coastal passage, you note the tidal stream atlas shows a strong cross-track current for part of the route. How should this be accounted for in the passage plan?

A. Only relevant for sailing vessels, not motor yachts

B. Wait until the vessel is set off track, then correct

C. Calculate the expected set and drift for the relevant time periods, adjust the planned heading/waypoints (or timing of the passage) to counter the cross-track effect, and brief the watchkeepers on the expected correction

D. Ignore it — GPS will keep the vessel on track regardless of current

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