At 2100, you alter course to 250°T and reduce speed to 7 knots. You enter the traffic separation scheme on the inbound side. At 2200, your fix shows you crossing a broken purple line on the chart, and you observe North Chesapeake Entrance Lighted Gong Buoy "NCD" to port. This area is __________.
• Traffic separation schemes (TSS) and how they are marked on charts • The meaning of broken purple lines on NOAA charts in approach channels • Geographic location and charted limits of North Chesapeake Entrance Lighted Gong Buoy "NCD"
• Ask yourself: On a standard NOAA harbor or approach chart, what does a broken purple line usually outline or indicate near channel entrances? • Consider where North Chesapeake Entrance Lighted Gong Buoy "NCD" is located. What type of regulated or special area is typically established around such entrance buoys? • Think about which of the four answer choices is normally shown explicitly on the chart with a labeled boundary that you can read in plain language.
• Look at the chart legend: what symbol/line style is used for pilotage areas, precautionary areas, and magnetic disturbance areas? • Verify whether inland waters are labeled by a line on the chart at that position, or instead defined legally in the Coast Pilot/Regs. • Confirm what special area, if any, is named in association with buoy "CBJ" on the chart near the Chesapeake entrance.
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