I run aground gently and adjust the offset so the instrument reads zero. With 12 feet of tide out here I'm not going to try and set to charted depth because then the math gets stupid.
Jim Watts Paradigm Shift C&C 35 Mk III Victoria, BC On 21 December 2015 at 05:42, Ron Ricci via CnC-List <cnc-list@cnc-list.com> wrote: > Dennis, > > > > I use an offset from the transducer to the bottom of the keel so I read > the actual depth under the keel. This way, I can easily tell how much > water is under the boat. Comparing the depth shown on the instrument with > that charted depth always requires knowing the state of the tide. > > > > Thanks, > > *Ron* > > Ron Ricci > > S/V Patriot > > C&C 37+ > > Bristol, RI > > ron.ri...@1968.usna.com > > > > > > > > *From:* Dennis C. [mailto:capt...@gmail.com] > *Sent:* Sunday, December 20, 2015 3:03 PM > *To:* CnClist > *Subject:* Stus-List Winter discussions - depth sounder offset > > > > 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 > > _______________________________________________ > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go to the > bottom of page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > >
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