What does 'look-ahead' functionality in ECDIS route monitoring provide, and why is it a useful complement to the current cross-track error display?

A. It shows a live video feed from a forward-facing camera

B. Look-ahead projects the vessel's predicted track forward based on current course/speed (and rate of turn where fitted) so the OOW can see potential hazards or off-track alarms before they are reached, rather than the display only showing the vessel's current position and cross-track error at this instant — this supports earlier recognition of a developing problem rather than reacting only once already off-track or close to a hazard

C. It replaces the need for any passage planning at all

D. It functions only when the vessel is stationary

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