Dwight:
I think your measurement of the offset from the waterline would be more
accurate to the chart.....I use the offset from the transducer to the
bottom of the keel to give me a slight 'comfort level' or 'insurance' as
happened this past Summer.....I wasn't on the helm when the alarm went
off....I'd much rather have anything more than 6" below the keel, which
we did.
So I have my depth sounder set from the transducer rather than the
waterline.....I like the little extra safety (water) under me! I really
don't need to be exact, just close on the more water side.
Rob Abbott
AZURA
C&C 32 -84
Halifax, N.S.
On 2015-12-21 1:55 PM, dwight veinot via CnC-List wrote:
Dennis maybe I don't understand what you're saying, but If you want
the depth shown to closely match the depth shown on the charts should
the off set not be from the transducer up to the waterline instead of
down to the bottom of the keel
Dwight Veinot
C&C 35 MKII, */Alianna/*
Head of St. Margaret's Bay, NS
d.ve...@bellaliant.net <mailto:d.ve...@bellaliant.net>
On Sun, Dec 20, 2015 at 4:03 PM, Dennis C. via CnC-List
<cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com>> wrote:
Just curious what listers use for a draft offset and why.
I use the actual offset as measured from the transducer to the
bottom of the keel so the depth shown closely matches the charted
depth. I prefer to compare the depth shown on my instruments to
the chart plotter rather than have to do the math all the time.
I know some owners use an offset so that the instrument shows
depth under keel while others don't use any offset at all.
Dennis C.
Touche' 35-1 #83
Mandeville, LA
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