Saab Seaeye develops new type of ROV

September 19, 2011 - via Offsore Shipping

Subsea UK News reports that a new underwater vehicle concept has been created by
Saab Seaeye that can go places and undertake tasks where ROV deployment is difficult or
impossible. Called Sabertooth, the hybrid vehicle combines the technologies of both AUV and ROV vehicles into a single unified resource. For operators it offers the range and manoeuvrability of an AUV, yet with the tooling capability of a light-work ROV.

The concept comes from a reconfiguration of Saab’s hovering AUV, built for defence operations, to one suited to the oil and gas industry using ROV technology proven in that sector but with the same exceptional stability proven for the defence application.

For subsea operators, the Sabertooth offers a choice of three operational modes: autonomous roaming; attached fi bre-optic cable; or umbilical carrying power and
communications. It has an excursion range of 20-40km, depth rated option to 3,000m, and can embark on either long range programmable missions, or under operator control around set targets, with obstacle avoidance and precise manoeuvrability for safe and easy access, including working inside complex structures.

Subsea UK News said that where space is limited, the Sabertooth’s 360 degree manoeuvrability means it can orientate itself into any position − even directly up, or down – from where it can attend to its light work or inspection task. And in places where access is seasonally restricted, it can remain for a year at an isolated location, in resident
mode, at its docking station, ready to be launched on task as needed, under the remote guidance of an operator.

At the docking station tooling packs can be stored ready for use; its batteries re-charged, data and video downloaded and fresh instructions uploaded. "The whole hybrid AUV/ROV concept is expected to bring significant savings in operating costs as a vehicle like Sabertooth is easily deployed from a platform, shore-base, or small low cost vessel," said Subsea UK News.

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