Saab Seaeye Sabertooth — Specs & Review
Specifications
| Brand | Saab Seaeye |
|---|---|
| Model | Sabertooth |
| Year | 2012 |
| Category | Underwater |
| Autonomy | fully-autonomous |
| Environment | outdoor |
| Connectivity | USBL Acoustic, LBL Acoustic, Fibre Optic Tether (ROV mode), GPS Surface |
| Country of origin | SE |
Key features
- Hybrid AUV/ROV — autonomous and tethered modes in one platform
- 3000m depth rating
- Full hovering capability (unlike torpedo AUVs)
- Switch between AUV survey and ROV intervention on same dive
- DVL + INS + USBL acoustic navigation
- Deep-water pipeline inspection and intervention
- Eliminates dual AUV+ROV vessel requirement
What is it?
The Saab Seaeye Sabertooth is a deep-rated hybrid underwater vehicle that combines autonomous AUV survey capability with tethered ROV intervention capability in a single hovering platform. It can switch between AUV and ROV modes during a single deployment, providing operational flexibility unavailable with separate AUV and ROV assets.
Who is it for?
Offshore oil and gas operators conducting pipeline inspection, survey, and intervention on deep subsea infrastructure. Offshore wind operators with deep mooring inspection requirements. Defence and research organisations requiring deep-water autonomous inspection with intervention capability. Any operation where deploying and coordinating separate AUV and ROV vessels is prohibitively expensive.
Key specs
- Depth rating: 3000 m
- Modes: AUV (autonomous, untethered) + ROV (tethered, pilot-operated)
- Navigation: DVL, INS, acoustic positioning (USBL/LBL)
- Hovering: Full hovering capability (unlike torpedo AUVs)
- Payload: Sonar, cameras, intervention tools (mode-dependent)
- Endurance: Multi-hour on battery (AUV mode)
- Origin: Sweden/UK (Saab Seaeye)
The hybrid advantage
Conventional AUVs survey at speed but cannot hover for inspection or intervention. ROVs can hover and intervene but require a tethered vessel. Sabertooth combines both — autonomously surveying a pipeline route, then switching to tethered ROV mode to approach and inspect a specific anomaly, all without recovery.
How it compares
Sabertooth competes with Kongsberg Hugin Superior (AUV only), ECA Group A18D (hybrid), and WHOI REMUS 6000 (deep AUV, survey only). Sabertooth's hovering hybrid architecture is rare in the deep-water AUV market and uniquely suited to combined survey and intervention operations.
Limitations
- Very high acquisition and operational cost (deepwater work-class asset)
- Complex logistics — requires vessel with launch/recovery system
- AUV endurance limited by battery versus tethered ROVs with unlimited surface power
- Requires highly trained pilots for ROV mode intervention
FAQ
What is a hybrid AUV/ROV?
A hybrid vehicle combines autonomous AUV capability (untethered, pre-planned survey missions) with tethered ROV capability (pilot-controlled, hovering, intervention) in a single platform. Sabertooth can switch between modes on the same deployment, providing operational flexibility not available with separate AUV and ROV assets.
What depth can Sabertooth operate at?
Sabertooth is rated to 3000 metres depth, covering the majority of offshore oil and gas infrastructure and continental shelf survey requirements.
Can Sabertooth hover underwater?
Yes. Unlike torpedo-shaped AUVs that must maintain forward speed to stay at depth, Sabertooth uses a hovering thruster configuration allowing it to hold precise position underwater in AUV or ROV mode — essential for close-range inspection and intervention.
What inspection tasks can Sabertooth perform?
Sabertooth can perform autonomous pipeline route survey (AUV mode) and close-range inspection, anomaly investigation, and light intervention tasks (ROV mode) including structure inspection, valve actuation, and equipment retrieval depending on payload configuration.