For us the tide range is only 2 feet or so normally and the charts are all done for low tide, so as long as the depthfinder is > or = to the charted depth, things are good. If not, either I am lost or the chart is wrong. There are a couple of places near me where I am aground in what should be 8 feet of water. When Kent Narrows is too long between dredging I go through with 0.1 feet more than the reading I run aground at. Joe Coquina
From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of dwight veinot via CnC-List Sent: Tuesday, December 22, 2015 9:33 AM To: cnc-list@cnc-list.com Cc: dwight veinot Subject: Re: Stus-List Winter discussions - depth sounder offset Yea but even with that we need to account for tides...the charts show depths at low tide, so I like my depth sounder to indicate actual depth from the water surface, and I usually use a positive offset of 2 feet which is as close as I measured with maybe a couple inches of comfort factor between the transducer and the water line when on the hard...no harm in your way and more comfort factor... it's only luck if the sounder gives the same depth as the charts because the charts show minimum depth over the contour region, there could be deeper spots within the contour area, that's good for us Dwight Veinot C&C 35 MKII, Alianna Head of St. Margaret's Bay, NS d.ve...@bellaliant.net<mailto:d.ve...@bellaliant.net>
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