What does yellow circle on a buoy mean?

Why is important to lower the anchor from the bow of the vessel instead of the stern? Because a boat does not have brakes stopping your craft while under the forward motion of the motor involves? PWC is overtaking another vessel must give way? What is a Catenary Anchor Leg Mooring CALM buoy? What does Poseidon initially do to the Phaeacian ship? How many German u-boats were made during WW1? Why would it be difficult to land a boat in barracuda bay? Can you park an inboard ski boat on the beach? Where must validation sticker be placed on a vessel? What was the last year the 18 hp evinrude outboard motor was made? What should you do to keep from coliding wuth another boat? Where can one fine a canoe on sale to purchase? Why does my boat engine hesitate when opening throttle fast from idle? What is a boat made out of and why is it made out of this? Can you put a regular hot water heater in a mobile home? What are the sides of ships called? What is oil to gas ratio on 1988 Johnson 88 spl motor outboard thanks people? Where did the term starboard come from? Differences between a ship and a submarine? When did Johnson outboard discontinue production?