[CA] [CA11] EV-1 Sensor ROT Data

[rsqunit]

Thanks Chuck. I'll do some more research and post back what I find.

The nice thing about using a standard, such as NMEA 0183 or NMEA 2000, is interoperability across multiple vendor devices, so I'm sure the spec has to define this somewhere. :-)

One clear definition I did find, which does not apply to recreational vessels per se but is interesting nonetheless and makes a case for a standard unit, is Class A AIS transponders, which do need to report ROT in a specific manner and not as a particular vendor sees appropriate. Otherwise other ships would not have an understanding of the data being reported.

Anyway, thanks again. I'll post back there when I find out more.