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- Master (Oceans or Near Coastal (Uninspected Fishing Industry Vessel)) »
- Q183 - Navigation General: Oceans
123. What is the light phase characteristic of a lighted isolated-danger mark?
A lighted isolated-danger mark exhibits a white group-flashing light, specifically two flashes in each repeating group, distinguishing it from other aids to navigation and adhering to IALA and U.S. regulations.
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