WAVE PIERCING CATAMARAN (1984) This high-speed passenger and vehicle ferry combines two technologies. Traditional catamarans are fast and stable but give a rough ride. Phil Hercus combined the catamaran with a wave-piercing hull design called SWATH, used to stabilise oil platforms. Hercus's new-style cats ride above the water while their hulls plough through the waves. They've been built in Hobart since 1984.