Trip and waypoint management functions**
For general marine reference
U.S. nautical navigation aids of lights, buoys, sound signals and daybeacons
U.S. inland shoreline detail for lakes, reservoirs, waterways and rivers with icons indicating boat ramps, dams, facilities, and danger areas
Coastline detail, including thousands of small islands plus wrecks, obstructions and other hazards (no depth contours)
Detailed U.S. map with cities, towns, highways, major local roads and interstates
[Only registered and activated users can see links. ]
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