Now Simrad WP30.....
I think. Navico was purchased by Simrad some time ago. I received my West Marine 2000 catalog and noticed that the Simrad WP30 looked an awful lot like a WP300CX. The text reads the same. To answer Jay's question, the Raytheon selection chart put my H37C into a 5000+. It's more than twice the money and a difficult installation(attaches below deck to the rudder post). The 4000+ is rated at 16500 displ. while the "WP30" is rated at 19000 displ. I wrote to Pete(the first post) about the installation of his WP300CX, sounds real simple. The price of the WP30 at JSI and Defender is about the same, $939.