18 50_Afficheur_Multigraphic_um_UK_27
2.5.3 Pilot Modes
Select the pilot mode as follow:
Press and hold this key (>3s) to go directly to the Pilot Mode
menu. This shortcut is available from any page
True Wind mode
This mode requires a speed sensor, a compass sensor, a wind sensor and the
software add-on « true wind ». Once this mode has been selected the pilot steers the
boat to a set true wind angle as calculated by the processor.
The true wind mode is particularly well adapted to downwind conditions in waves.
These are the conditions where the nke pilot demonstrates its true capability. If
apparent wind was used you would get the following issues:
- The boat sails down the wave and apparent wind speed decreases, the apparent
wind angle decreases: it is a header, the pilot bears away to maintain the wind
angle it is set to steer to.
- The boat sails up the wave and apparent wind speed increases, the apparent
wind angle increases: it is a lift, the pilot luffs up to maintain the wind angle it is
set to steer to.
As a result, in waves the apparent wind mode is not efficient and it is better to select
the compass mode to keep a straight course.
With true wind mode the pilot steers the boat on a straight course keeping the
optimum wind angle in the waves. The wind angle to steer is not affected by boat
speed variations. While sailing solo it is very efficient to leave the pilot to steer the
boat and focus on sails trim (just watch power consumption).
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