Here’s an early look at a sporty new entry in the growing power catamaran field, the 38-foot Seavy 11 from a new French builder, Sea Venture Yachting. The Seavy 11 is an ultra-modern, ultra-modular cat. It already has more deck space, by a long shot, than a similar-sized monohull, but you can fold down the platforms on each side of the aft deck to add another three feet to the already large 14-foot beam. And it comes with three power options – sterndrives, outboard, or electric. The company says that with twin 370-hp sterndrives, the Seavy 11 tops out at…