Chapter 2: Installation
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2
Inst
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Note:
Because the compass is electronically aligned after installation
(see Chapter 3: Calibration), you can mount it so it faces in any direction.
Figure 2-2: Compass - recommended location for non-steel hulls
Finding the most suitable location
To identify the best compass location on your boat, start at the pitch and
roll center then move the compass up and/or aft until you find a location
with minimal magnetic disturbance.
To check if the intended mounting location is free from magnetic
influence:
1. Temporarily fix a simple handheld compass at the intended location.
2. Turn the boat through 360°, watching for any differences between the
hand bearing compass and the boat’s main steering compass.
3. The site is suitable for the fluxgate compass if the differences are less
than 10° on all headings.
Location on steel-hulled boats
On steel-hulled boats you must mount the compass at least 1 m (3 ft)
above the main deck or wheelhouse. If mounted below deck, the compass
will not work correctly as the hull shields the Earth’s magnetic field.
0.3L to 0.5L
L
0.3L to 0.5L
L
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