B&G Zeus2 Glass Helm CPU - Manual (Page 51)

Tacking in AUTO mode
Ú Note: The tack function is only available when the system is set up for SAIL boat type.
Tacking should only be performed into the wind and must be tried out in calm sea
conditions with light wind to find out how it works on your boat. Due to a wide range of
boat characteristics (from cruising to racing boats) the performance of the tack function may
vary from boat to boat.
Tacking in AUTO mode is different from tacking in WIND mode. In AUTO mode the tack angle
is fixed and as defined by the user. For more details, see "Tacking - WIND mode" on page 53.
You initiate the tack function from AUTO mode.
When tacking direction is selected the autopilot changes the current set course according to
the set fixed tacking angle.
You can interrupt the tack operation as long as the tack dialog is open by selecting the
opposite tacking direction. When interrupted the boat will return to the previous set
heading.
NoDrift mode
NoDrift mode combines the autopilot and the positioning information from the GPS.
In NoDrift mode the vessel is steered along a calculated track line in a direction set by the
user. If the vessel's heading is drifting away from the original heading due to current and/or
wind, the vessel will follow the line with a crab angle.
1. Turn the vessel to the desired heading
2. Activate the NoDrift mode. The autopilot will draw an invisible bearing line based on current
heading from the boat’s position
Unlike in AUTO (compass) mode the autopilot will now use the position information to
calculate the cross track error, and automatically keep your track straight.
You use the port/starboard arrow panel buttons in the autopilot pop-up or the rotary knob
to reset the bearing line while in NoDrift mode.
Dodging
If you need to avoid an obstacle when using NoDrift mode, you can set the autopilot to STBY
and power steer or use the helm until the obstacle is passed.
If you return to NoDrift mode within 60 seconds you can select to continue on previous set
bearing line.
If you don’t respond the dialog will disappear and the autopilot will go to NoDrift mode with
current heading as set bearing line.
NAV mode
Warning: NAV mode should only be used in open waters.
You can use the autopilot to automatically steer the boat to a specific waypoint location, or
along a pre-defined route. The position information from the GPS will be used to change the
course to steer to keep the boat on the track line and to the destination waypoint.
Ú Note: To obtain satisfactory navigation steering, the Zeus 2 Processor must have valid
position input. Autosteering must be tested and determined satisfactory prior to entering the
NAV mode.
Start automatic navigating
When you start navigating a route or to a waypoint from the chart panel, you will be
prompted to set the autopilot to NAV mode. If you reject this request, you can start NAV
mode from the autopilot mode menu.
When NAV mode is initiated, the autopilot will automatically keep the vessel on the leg.
Autopilot | Zeus 2 Glass Helm 51