Saab Seaeye Demonstrates Subsea Docking at Equinor Station

Saab Seaeye has successfully docked an autonomous vehicle to an Equinor subsea docking station to recharge its batteries and download data, demonstrating that a new future in underwater technology has arrived.

Representatives from across the offshore energy industries gathered at Sweden’s Lake Vättern to witness the docking of the Saab Seaeye Sabertooth autonomous vehicle, at Equinor’s open-standard subsea docking station (SDS).

From the docking station the Sabertooth was sent on various autonomous transits to undertake mock inspection tasks that included returning to the station for recharging and video data download.

Jon Robertson, managing director of Saab Seaeye, said: “For 30 years we have been in the forefront of developments and it’s brilliant to see a major advance in the future of the industry come to fruition.”

The docking station at the demonstration was produced by Blue Logic and includes their inductive power and data connectors. Whilst docked the vehicle was charged and data uploaded and downloaded via the connectors.

Live video and vehicle control were made possible with Sonardyne’s BlueComm free-space optical modem.

Much of the demonstration was run with pre-programmed autonomous route plans. Also advanced motion controls via the BlueComm system, enabled operators to move the vehicle from an automatically held position by set amounts using a touchscreen user interface. The mating of a TMT electric torque tool to a valve panel was also performed with control and video relayed via the BlueComm system, Saab Seaeye explained.

Also demonstrated was an underwater simultaneous localisation and mapping (UWSLAM) that allows a pilot to ‘see’ the environment as a 3D map in real time whilst flying around – and by leaving a ‘snail trail’ the system can determine precise vehicle positioning relative to the map and provide effective station-keeping and augmented navigation functions.

In addition to Equinor, who has driven the open-standard SDS and is working with industry via the Subsea Wireless Interest Group (SWIG), other representatives from major operators were at the event, along with other companies who may use SDS, including Saipem, Oceaneering, IKM Subsea and Eelume. Also present were those who could supply power to these vehicles, such as Ocean Power Technologies, along with service suppliers like Modus, ROVOP and DeepOcean.