The baby stay is all sorted.
Wired in the AIS transponder. Connected the Laptop PC programmed the transponder with Calviere Two's details. The PC get AIS and position information which is displayed on the navigation software. The GPS plotter receives the  AIS information from the transponder, and the VHF receives position information for the DSC from the plotter and it is all working correctly!
I polished the hull and it is looking good.