Join Date: Feb 2011
Location: San Francisco Bay area
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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 )
It sounds to me that you might simply be bumping into limitations of the technology. It's firing a radio beam and measuring how long it takes to come back. The density of the water, any sediment in the water, movement of the water, all come into play.
Is the transducer pointing straight down, or to the side? That could do the trick.
Bristol 31.1, San Francisco Bay