 In Polynesian terminology the catamaran is a pair of "Vaka" held together by "Aka", whereas the trimaran is a central "Vaka", with "Ama" on each side, attached by "Aka".Catamarans and trimarans share the same terminology.Modern pioneers of multihull design include James Wharram (UK), Derek Kelsall (UK), Tom Lack (UK), Lock Crowther (Aust), Hedly Nicol (Aust), Malcolm Tennant (NZ), Jim Brown (USA), Arthur Piver (USA), Chris White (US), Ian Farrier (NZ), LOMOcean (NZ), and Dick Newick (USA).