Can I use heading data from IMU through NMEA?

[Tigress]

Thanks for the tip...unfortunately OP seems to output the VTG sentences rather than the more common HDG/HDM/HDT series that my instruments (e.g., Furuno plotter) need. Any way to easily convert or tell OP to generate these sentences rather than the VTG?

Ah, apologies, looks like you need to set the nmea sentence in the nmea generator which is in the tools menu. I had a IMU running a while back but took it off and forgot how I got the data to opencpn. For HDG it looked like this....

thanks I'll give it a try.