Operation Manual

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Using the autopilot | NSS Operator Manual
When running, it is diffi cult to steer the boat with waves coming sideways or from behind.
The waves may yaw the boat into an unwanted gybe; this can be hazardous for both the crew
and the mast.
The gybe prevent function will be activated when the actual apparent wind angle becomes
greater than 175° or gets opposite to the set wind angle. More rudder will be commanded to
prevent an unwanted gybe.
The tack and gybe prevent functions are not a guarantee against getting into a hazardous
situation. If the eff ect of the rudder and/or drive unit is not adequate, a dangerous situation
may occur. Pay particular attention in such situations.
Wind steering and navigation
In Wind Nav the autopilot steers the boat given both wind data and
track data from the NSS navigation function.
In Wind Nav mode the autopilot calculates the initial course change
needed to navigate towards the active waypoint, but the pilot will
also utilize the current wind direction in the calculation.
Using the NSS in an AP24/AP28 system
Command transfer
If your NSS unit is connected to an autopilot system including an AP24
or AP28 control unit, only one control unit can be active at the same
time. An inactive unit is indicated with an envelope symbol in the
display.
You can take command from an inactive NSS unit with active autopilot pop-up by turning or
pressing the rotary knob.
If the pop-up is not displayed, you can take command from the NSS unit by pressing and
holding the STBD/AUTO key to bring up the mode selection menu, and then confi rming
active mode.
Locking remote stations
The AP24/AP28 includes a Remote Lock function that will disable all
other control units. A locked unit is indicated with a key symbol.
When the remote lock function is enabled on AP24/AP28 no transfer of
command to NSS or other AP heads on the system can take place, only
the active AP control unit stays in command.
You can only unlock the remote stations from the AP24/AP28 unit in command.
Using the autopilot in an EVC system
When the NSS is connected to an EVC system via the SG05, you can take manual control of
the steering irrespective of the autopilot mode.
The mode indicator on the pilot pop-up will be replaced by a dash to indicate EVC override.
The system will return to NSS control in standby mode if no rudder command is given from
the EVC system within a predefi ned period.