I am currently runing Winchart NautiQ and SOB on my laptop, both using C-Map
Max charts. This is also interfaced with nmea data from Raymarine (Depth,
wind etc) and obviously has a GPS input

I am thinking of getting a radar. Can anyone advise me of manufacturers, and
give me a clue how to interface this with the above. Where do I start?

Am also trying to get a sunlight visible waterproof display to mount at the
helm, but they don't yet seem to exist (at a sensible price anyway)

Thanks

Phil