The company was created from a merger of Incat Designs - Sydney and Crowther Designs in 2005. Crowther Design founder
Lock Crowther had a history in catamaran, trimaran and commercial vessel design. Incat Designs (Sydney, formed 1988) founder
Philip Hercus had a history in passenger vessel catamaran design. In 1977, he formed a partnership, namely International Catamaran Pty Ltd designing and building catamarans in
Tasmania. This combination made significant advances in fast powered catamaran technology culminating in the
wave piercing catamarans. Early in 1988, the shipyard partnership was mutually terminated and a design-only company, International Catamaran Designs Pty Ltd (Incat Designs - Sydney) was formed as part of the Hercus Marine Group. The other partner
Bob Clifford then commenced designing and building under a new company,
Incat. Both merging companies have had long partnerships with the following shipyards:
Gladding-Hearn Shipbuilding,
Richardson Devine Marine, Nichols Bros, Gulfcraft, Cheoy Lee Shipyards, Aluminium Marine, Kvichak Marine and
NQEA. Later partnerships have emerged with: Arpoador Engenharia, Astilleros Armon, ETP Engenharia Ltda.,
Incat, PT Caputra Mitra Sejati Shipyard, Veecraft Marine Over 650 vessels built to Incat Crowther designs have been delivered. These include
Eleanor Roosevelt, the world's first large catamaran Ro-Pax ferry powered by
dual-fuel reciprocating engines with
cryogenic liquefied natural gas tanks, and New York City Ferry's 40-plus vessel fleet. ==Records==