A symbol on a chart with a dotted line surrounding it represents what?

• A. A navigational hazard
• B. A buoy symbol
• C. A shoal area
• D. A landfall mark

Answer: (A)

A dotted circle around a symbol on a chart marks a navigational hazard. The symbol inside identifies the specific danger (such as a wreck, rock, or submerged obstruction), while the surrounding dotted line signals that the area is risky and should be avoided or passed with extra clearance. Mariner should plan to stay well clear of the circle and consult the latest charts and notices to mariners for precise guidance. Other features have distinct chart symbols without this dotted surround.