{Stus-List} Nexus system - VMG vs WCV - report

Gary Russell captngaryr at gmail.com
Mon Jun 29 08:51:41 CDT 2009


Dennis,
     That seems to agree with my observations this weekend as well.
Gary
S/V Expresso

On Mon, Jun 29, 2009 at 9:48 AM, Dennis C. <captbuy at yahoo.com> wrote:

>  As a follow up to a thread on the Nexus sytem and how it handles VMG, I
> did a quick test yesterday.  At a couple points of sail, while monitoring
> VMG, I turned off my GPS.  VMG did not change.  Thus VMG as calculated by
> the Nexus system is based on inputs from the Nexus speed tranducer, compass
> and masthead unit only.  It is wind-relative VMG.
>
> I also played with WCV or waypoint closure velocity.  By switching
> waypoints on the GPS, the WCV changed.  Thus, WCV is GPS based.
>
> This confirmed my original thinking for each of these.
>
> Dennis C.
> Touche' 35-1 #83
> Mandeville, LA
>
>
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