Sabertooth – Wams Submarinos

Underwater operations face a vast array of challenges that require a vehicle with multi-role capabilities and cutting-edge technology. This inspired Saab to create Seaeye Sabertooth, a combination of Saab Seaeye military and commercial ROV/AUV technology. With deepwater capability, long excursion range, advanced AUV functionality and a six degrees of freedom control system, Seaeye Sabertooth is the perfect example of Saab’s thinking edge in action. Available in single and double hull versions, Seaeye Sabertooth is a very powerful but lightweight platform for inspection, maintenance and repair (IMR). For example, its small size, tether-free operation and manoeuvrability ensure easy and safe access inside and around complex structures, making it ideal for autonomous IMR of subsea installations, tunnels and for offshore survey work. OPERATIONAL CONCEPT The Seaeye Sabertooth has three operation modes:

AUTONOMOUS The vehicle can be instructed to perform a specific task such as transit to a specific location or to perform a pre-programmed inspection. The autonomous system has behaviour-based architecture and the navigation is supported by an Inertial Navigation System (INS) and Doppler Velocity Log (DVL). In autonomous mode, the Seaeye Sabertooth is very well suited for survey work. Several types of sensors may be integrated and the behaviour-based control system enables it to react to sensor data and autonomously interrupt a programmed mission, take additional sensor readings and resume the mission.
Operator assisted The vehicle is given step-by-step instructions from an operator over an optical through-water or acoustic communication link. Each step is then verified by video or sonar data and sent back via the through-water communication link.
Manual operation The vehicle can be operated manually via fibre optic tether or an optical through-water communication link. This mode is typically used during the final approach to a docking node or during intervention. If the link is broken, a pre-programmed emergency routine is enabled.

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