Thanks for the reply.
Yes, keeloffset is set, but is non-relevant to what is being measured. Only thing you would do is give+or- to end result.
What i mean is, at one point system showed less than 1 meter when keel was not even close to bottom, if it were for the ST60 we would have been burried for 85 cm's, i guess depth was between 2 and 2,5 meters.
Same happend between 2 sandbanks, about 3 meters deep, but system
shows 1 to 1,20 meters. Heartrate was way up first time.
S/V Tutti ( Nantucket 33 by Alan Guerny )