Day Skipper Quiz · Buoyage 
A buoy. Body: bands, from the top: black, yellow. Topmark: two black cones, both pointing up.
Both cones point up, black above yellow. What mark is this and where is the safe water?
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North cardinal: safe water to the north. Cones pointing up mean north. The black band is where the cones point: at the top. Pass to the north of it.