Page 21/55 68_Afficheur_Multidisplay_um_UK_11
This page displays the current calibration value (old correction), the new calibration
value (new correction), the factors calculated from the runs (ratio FW/BW) and the
correction factor for boat speed.
2.6.4 Compass Auto-adjustment
Some magnetic deviation errors are unique to each boat, due to the magnetic
environment. An auto-adjustment of the compass is required to make the compass
learn this environment and achieve acceptable accuracy.
2.6.5 Auto-adjustement principle
To achieve this a swing procedure is required which consists of turning the boat
through a complete and perfect 360° turn clockwise at a constant rate of turn and
boat speed.
During this procedure the compass builds its own deviation curve table. Corrections
will be applied accurately from 0 to 359° in the sectors of sluggishness and
unsteadiness.
2.6.6 Compass auto-adjustement procedure
Conditions to achieve a successful auto-adjustment manoeuvre:
- Steady waters without current.
- Safe distance from any source of magnetic field such as cargo ships.
- Safe area for free manoeuvre in a 5 boat length radius.
- Motor at constant low speed (2 or 3 knots).
• Select « Magnetic heading » and press .
• Choose « Autocompensation » and press .
• Select « yes » and press .
• Make a constant circle clockwise
l’opération
d’auto compensation du Compas exige de la précision dans
l’exécution du cercle : vitesse constante de 2 à 3 nœuds et diamètre du cercle constant.
Pour le Compas Regatta, la procédure doit être effectuée en moins de 5 minutes. Si vous
ne pouvez pas tenir ces critères, l’auto compensation ne sera pas réussie.
WARNING: the auto-adjustment operation needs to be carried with a lot of care.
Motor the boat at 2 or 3 knots in a perfect circle. For the Regatta compass, the compass
swing must be performed in less than 5 minutes. Providing you match these conditions the
auto-adjustment will be successful.
To Next Page
Loading...