I am in the middle of a complete electronics refit
on our 2006 Beneteau
473 and am about to mount the Precision-9 compass
from B&G. The instructions are to mount the compass
"as close as to the vessel's centre of roll and pitch
as possible, i.e., close to the water
line". It also states that it should be placed "as far as possible away from disturbing magnetic interferences such as engines (min. 2 meters), ignition cables
and other large metal objects".
This leaves me with no obvious options as the centre of roll and pitch
would be somewhere on the centerline, low inside the cabin
approximately over the keel
, which in the case of a Beneteau
473 is cast iron! It has been suggested to mount it on the bulkhead wall next to the mast
(aluminum so that should be OK) but that position, if near the waterline would still be within 2 meters of the leading edge of the keel
. I could put it up high to get away from the keel but then it obviously would be far from the waterline.
Am I being overly concerned with the placement? Will this compass compensate for the proximity of the keel when calibrated? Any advice
would be welcome!