hh88HHBE. HHTIS. INTRODUCING THE NEW. HH88. Page 2. HHBB. 4488. Hot off the Morrelli & Melvin drawing board a new world in Catamaran boating! This new addition tohh88 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.