 Most high-speed craft serve as passenger ferries, but the largest catamarans and monohulls also carry cars, buses, large trucks and freight.In the 1990s there were a variety of builders, but many shipbuilders have withdrawn from this market so the construction of the largest fast ferries, up to 127 metres, has been consolidated to two Australian companies, Austal of Perth and Incat of Hobart.There is still a wide variety of builders for smaller fast catamaran ferries between 24 and 60 metres.