the color is officially called “Larkspur” blue
and spring tidal rates in tenths of a knot
The red hand points to the rising or falling tide
Approaches to Zanzibar is a standard nautical chart
which is used by the STCW and throughout the industry in general
C-Map Max-N+ Chart EW-Y143: River Shannon Parallel Rulers the color is officially calledOverview Overview C MAP MAX N+, designed for Lowrance, Simrad and B&G chart plotters, is packed with advanced features, including: Dynamic Raster Charts, Tides & Currents, C Marina Port Info, Custom Shaded Depths, High Resotlution Fishing charts, 3D View and more. Whether youre an avid saltwater angler, sailing enthusiast or long range cruiser, these powerful charts will enhance every moment you spend on the water. With huge coverage areas, up to date