If your ST60 is giving you True readings then you have boat speed through the water wired in to the Seatalk bus. I would guess you have a through hull paddle wheel connected to a Speed or TriData unit.
That is all you need for the new "i" series, though somewhere there will be the need to convert from Seatalk to SeatalkNG. Or connect the paddle wheel to a new "i" series display. When I installed a new SPX/5 Autohelm, i70 display, and converter I found the Raymarine documentation a bit disjointed, lacking in a correct example of what I was doing, and in one case was wrong in overview. They showed the Seatalk and SeatalkNG buses being connected to the SPX/5, which you can do, but it does not do any conversion or anything useful. I would normally only make a connection if there was some benefit to it. So ask away if you have any questions. For most people not racing knowing where the wind is coming from, ie a magnetic direction, can be useful but maybe not critical. In racing I use it to guess what sail might be best for VMG around the next mark. I have both symmetrical and asymmetrical spinnakers, so there is a choice. On the longer distance races even seconds count, so guessing at a heading, sail and sail trim helps. Winning by 68 seconds on a 27 hours race - priceless ;-) Mike Date: Thu, 13 Aug 2015 12:48:02 -0300 From: dwight veinot <dwight...@gmail.com> To: "cnc-list@cnc-list.com" <cnc-list@cnc-list.com> Subject: Re: Stus-List Electronics upgrade Message-ID: <CAAX9F+FJ2ff99mQNc8Zwoeizmjki3PmW8irAp-B5n7_o=zx...@mail.gmail.com> Content-Type: text/plain; charset="utf-8" so my old Raymarine st 60 wind instrument gives me apparent wind speed and angle and true wind speed and angle at the push of a button...I figured those measurements were close enough to accuarte to be good enough for my sailing needs...I don't think boat speed or heading or anything else is required...are the newer units different Dwight Veinot C&C 35 MKII, *Alianna* Head of St. Margaret's Bay, NS d.ve...@bellaliant.net
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