The answer will depend upon what data you want to view.
Virtually all radars, gps units and depth sounders will both receive and output NMEA 0183 data in accordance with standards set by the industry.* So yes, NMEA data can be sent to and from the various units.*
But...if you are trying to display a Furuno radar image on a Garmin GPS chartplotter and also have the depth sounder display the sounding display from a Navman then no, you probably ain't gonna get them to work together.
So, no single answer for you.* Specifically what are you trying to accomplish?