In IMCA SF 03/24, why did the survey vessel enter the wind turbine safety zone?

A. A gyro failure

B. The OOW lost situational awareness and turned to port instead of starboard given the tidal set, was new to the vessel and did not know its slow-speed handling while towing

C. The client changed the zone

D. The AIS failed

You're preparing a passage plan for a coastal leg in a yacht drawing 3.2m. At one point the chart shows a least depth of 3.8m at chart datum. What MUST you check before finalising this leg?

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

During your watch the ECDIS gives a "safety contour crossing" alarm. What is the correct response?

A. 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

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

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

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

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