Autoroute - Compatible Cartography Vendors; Differences Between Automatic Route Generation Functions; Depth Clearances (Tidal Height) - Raymarine LIGHTHOUSE 3 Advanced Operation Instructions

Warning: Automatic route generation
• Do NOT rely on automatically generated routes to guarantee that the route is
safe to navigate. You MUST review the suggested route carefully and where
necessary edit the route before following it.
• If a waypoint within any automatically generated route is added or moved the
Automatic route generation algorithm will NOT be used, extra care should
be taken to ensure that the route leg and any moved waypoints are safe to
navigate.
Caution: Easy Routing - Dredged areas
The C-MAP
Easy Routing is intended for passage planning between harbors rather than within
a harbor.
Warning: Traffic separation
Automatic route generation features do not adhere to the Traffic Separation
Schemes identified in Rule 10 of the International Regulations for Preventing
Collisions at Sea 1972 as amended.
Raymarine® therefore recommends that you do NOT use Automatic route
generation to create any part of a route which will cross traffic lanes or pass near
to traffic separation lines. In these situations Automatic route generation MUST
be switched Off and the route or route leg MUST be built manually, ensuring
compliance to the rules laid out in the above regulations.
Warning: Minimum Safe Depth, Width and Height
Depending on cartography vendor, the minimum safe settings are used during
automatic route generation, they are used to restrict created routes from entering
areas that are not suitable for the vessel.
Minimum safe settings are user defined calculations. As these calculations are
outside of Raymarine's control; Raymarine will not be held liable for any damage,
physical or otherwise, resulting from the use of the automatic route generation
feature or the Minimum safe depth, Minimum safe width or Minimum safe
height settings.

Autoroute - compatible cartography vendors

The Autoroute feature is compatible with the following cartography vendor features.
• Navionics® Autorouting.
• Navionics® Dock-to-dock
• C-MAP® Easy Routing

Differences between automatic route generation functions

There are important differences between the way different vendors handle automatic route
generation.

Depth clearances (Tidal height)

• Navionics® Autorouting and Dock-to-dock avoids shallow areas based on the user defined
Minimum 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.
• C-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.
116
® Easy Routing feature will ignore some hazards in dredged areas.