Differences between automatic route generation functions

AutoroutingDock-to-dockNavionics® Autorouting and Dock-to-dock avoids shallow areas based on the user defined Minimum safe depthMinimum safe depth setting plus an additional Navionics® safety margin. it assumes the lowest tide level, normally Lowest Astronomical Tide (LAT). The tide can be lower than LAT due to atmospheric effects such as high air pressure, wind direction, etc.

Easy RoutingC-MAP® Easy Routing assumes that there will be some tide. The user must apply their own safety margin as appropriate to current conditions. Route legs that cross areas shallower than the user defined Minimum safe depth setting are marked with hazard waypoint symbols, it is critical that these legs are checked to ensure that there is sufficient tide to avoid the hazard.

Navionics® Autorouting and Dock-to-dock does not use the user defined Minimum safe widthMinimum safe width or Minimum safe height settings when generating routes. Objects with width / height constraints are marked with hazard waypoint symbols, it is critical that these legs are checked to ensure that there is sufficient clearance to avoid the hazard.

C-MAP® Easy Routing uses the user defined Minimum safe width and Minimum safe heightMinimum safe height settings to determine if sufficient clearance is available. The user must apply their own safety margin as appropriate to current conditions. The Height datum must be checked, as it could be Mean High Water Springs (MHWS) or Highest Astronomical Tide (HAT). In both cases the tide can be higher than the datum due to atmospheric effects such as high air pressure, wind direction, etc.