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- Master (Oceans or Near Coastal (Uninspected Fishing Industry Vessel)) »
- Q182 - Navigation General: Near Coastal
175. You sight a buoy fitted with a double-sphere topmark. If sighted at night, what color and light sequence would you expect to see?
A double-sphere topmark indicates an isolated danger mark, which displays a white light in a group of two flashes at night.
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