hh88HH88 is a 27-meter carbon fiber catamaran desned by Morrelli & Melvin. It can host up to 10 guests and 4 crew members, and has solar panels, generators and lithium batteries for power.hh88 The newly launched HH88 is the second largest carbon fiber catamaran ever built. Fully customizable with an optional flybridge, deck level owners’ suite, tiller steering, jacuzzi and more.