I hadn't heard that mnemonic, but it seems to work
Primary Coastal Navigation Nautical Chart Colors
1. Buff - Cartographers use a dull yellow to show most landmass on noaa nautical charts
. This land remains visible even at low tide or high tide.
2. Gold - Ready for a cold one or a night out on the town? Look for blotches of dark gold inside the buff color on your navigational chart. This indicates harbors that offer sailboat repair, supplies, restaurants and bars. Highlight these areas on your nautical chart in case you need to pull in for any reason.
3. Green - Stay clear of any green tinted area on noaa nautical charts
. This denotes dangerous shoals such as rocks, sand bars or coral
heads near a beach. At high tide, these hazards remain hidden. Wait until low tide before you attempt to pass close to a green tinted shoal.
4. White - For most cruising sailboats, white indicates deeper water
. But don't assume that the water
will be deep enough for you. Check all along your coastal navigation
trackline to make sure no shoals block your path.
5. Blue - Blue denotes shoal water. Darker tints of blue indicate shallow water. Lighter tints indicate deeper water. Study the nautical chart before you plot a sailing route
near or over any blue tinted water.