Hi Donsan,Hybrid GB - Are you associated with Island Pilot? An occasional TF poster, Ruben Trane, did a hybrid 40' Island Pilot Catamaran a few years back that had 6KW of solar panels. They claimed it would do 25NM on battery power prior to using diesel with twin Steyr hybrid engines. Not certain but believe it was an R&D project also. The boat is for sale now on YW for quite a bit more than your hybrid. I have been intrigued with it but it is above my boat R&D budget.
If you have a sketch on how 4KW of panels could be mounted on a GB 42, it would interesting to see.
no, not affiliated, but this is a small world, so likely they are using many of the same components. we were using large 330Wpanels, part of the installation was a replacemnt of the bimini top. Lots of space.