A 5m zero-carbon uncrewed vessel has returned from 16 weeks in the Atlantic where it has been gathering surface current data.

The AutoNaut is a tiny remote operated satellite guided vessel


Source: AutoNaut

The AutoNaut is a tiny remote operated satellite guided vessel

The tiny remote operated satellite guided vessel has been gathering data at sea since it was launched on 4 August from the Scottish Association for Marine Science (SAMS) at Oban in Scotland.

“Such long endurance in that extreme environment proves the robustness of the AutoNaut wave-propulsion system,” said Harry Spedding, general manager of AutoNaut Ltd.

“With near-silence and no fuel required, AutoNaut offers a truly economic long endurance ocean going platform.”

Epic voyage

During the voyage, the AutoNaut made its way out to the Rockall Trough off the Hebrides carrying out precision transects over moored subsurface arrays of sensors to gather contemporary surface data.

Such surface currents data is vital to the scientific understanding of the sub-polar meridional overturning current which governs Europe’s weather.

Other data gathered included passive acoustic monitoring (PAM) to listen for whales and dolphins and temperature and salinity of the water. The AutoNaut also gathered wave data from close to two Met Office buoys moored deep offshore.

“Eventually this should provide Met Offices with a zero-carbon option for gathering important weather forecasting data, without the need for ships and people at sea,” said Mr Spedding.

From the Rockall Trough, the AutoNaut made its way south crossing the edge of the continental shelf numerous times some two hundred miles off western Ireland, to return south of the Isles of Scilly to Penzance.

The unique wave-propulsion concept was developed in the South West. Innovate UK has funded further work to make the AutoNaut capable of operating in the most extreme environments, such as the Southern Ocean and Arctic, during winter. Significant work has already gone into anti-icing technology and hardening the vessel itself.

This proving trial is a stage in achieving the project’s goal. It is partnered by SAMS and involved a wide range of international oceanology institutions including the Irish Marine Institute, the UK Met Office and National Oceanography Centre.

Data from the operation will now be downloaded from the vessel and made freely available to partners for analysis.

AutoNaut manufactures wave propelled uncrewed surface vessels. The company is part of the global Seiche Group which specialises in technological solutions to protect marine mammals from the effects of underwater noise in the ocean.