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You are traveling upstream on a river at dusk. You see a buoy with the number 4 and a flashing red light. What should you do?
Keep the buoy on your starboard (right) side.
You go inside that space that has the bouy and stay to the port-side of the bouy.
Since this is a Green Lighted Buoy sighted while approaching a harbour,this is a Lateral port hand side mark, IALA region B. To keep this buoy on your port side while travelling upstream.
The number of ocean waves that pass a buoy in one second is the frequency of the wave. The crest of a transverse wave is its highest point.
I think you should----Keep the buoy on your port (left) side.
Frequency
entering a harbor from the open sea, ther is a lighted buoy bearing the number 6, how should i pass it
As you enter a harbor from the open sea, you see a lighted buoy bearing the number 3. How should you pass it?
Do not pass between the buoy and the shore
Keep the buoy on your right or starboard side.
Keeping it on your port, passing it to starboard, will prevent your running aground.