AutoNaut is 5 metres overall length, is propelled predominantly by wave energy and so moves slowly (1-3 knots). It has a steering system that can be integrated into a command and control system. An Auxiliary Thruster is fitted, designed to provide propulsion in calm conditions, to ‘get out of trouble’, and to maneuver away from a slipway.
The AutoNaut is wave propelled and performs almost equally well on all headings including directly into wind and waves. It has zero emissions, and can roam the oceans for very long periods, transmitting data via satellite to shore when a suitable command and control system has been integrated. This extreme endurance is coupled with a unique and elegant solution to the speed/payload/power balance for unmanned surface vessels (USVs). Hull motions in waves are converted directly and silently into propulsive thrust. This gives speeds of up to 3 knots for a 5m vessel. AutoNaut patented wave propulsion technology is completely scalable, so larger boats with more capacity and power can be tailored to customer requirements – as can smaller boats. There are few moving parts and the control and mission systems operate with minimal electrical power. Batteries store electrical energy which is generated from an array of PV solar panels fitted across the deck of the vessel. AutoNaut can be deployed and recovered either from a support boat or a slipway.

The hull is robustly constructed from composites and is intended to withstand operations at sea for many months without any physical human intervention. It incorporates watertight sub-divisions and in-built buoyancy. Compartments can be independently opened and sealed with a watertight hatch to gain access to the internal equipment and mission system. The hull is fitted with a metal hoop at the bow and at the stern which has undergone functional element analysis and is rated for lifting and towing.