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  Saab Seaeye - Manufacturer of electric powered ROV systems
  Seaeye ROVs
• Comparison chart
• Falcon & Falcon DR
• Tiger
• Lynx
• Cougar-XT Compact
• Cougar-XT
• Cougar-XTi
• Panther-XT
• Panther-XT Plus
• Leopard
• Jaguar
• Sabertooth
  TMS Systems
• TMS2 (Tiger)
• TMS8 (all other
• TMS10 (Jaguar)
  LARS - ROV handling
• A-Frame LARS
• Crane based LARS
  ROV control cabins &
  workshop containers
  Seaeye accessories
• Seaeye thrusters
• Seaeye LED lamps
• Seaeye Pan & Tilt
• Seaeye metal shell
  Saab Military ROVs
• Double Eagle
  (MCM System)
• Double Eagle SAROV
  (Hybrid AUV/ROV)
  (Submarine ROV)
• AUV62
  (Acoustic Target)
  Seaeye Hydro ROVs
• Falcon - dam
  inspection vehicle
• Sabertooth
  deep tunnel
  penetration vehicle

Seaeye Cougar & Seaeye Cougar-XT

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comparison with other ROVs
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The Seaeye Cougar-XT is a development of the successful Seaeye Cougar range, proven worldwide in demanding applications and recognised for its capability to operate effectively as a compact work ROV.

The new Cougar-XT comes with a considerable improvement in performance. Developments in drive and power technology has seen vehicle thrust increased by over 50% in all directions - creating a vehicle with the highest thrust to weight ratio in its class.

Vehicle power in the XT has been doubled by increasing the supplied voltage from the standard 250 Volts DC to 500 Volts. Apart from improving the vehicles handling this enables a Seaeye Cougar-XT to accommodate a wider range of heavier duty tooling for work tasks. These include drill support, salvage and IRM to depths of 2000 metres.

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Tackling an expanding range of applications is made easier with Seaeye Cougar ROVs because task-specific tooling skids can easily be bolted on, and changed as needed.

The Seaeye Cougar-XT leads a new generation of compact, highly flexible and extremely powerful electric ROVs that offer users the ability to undertake a wider range of demanding tasks at lower operating costs.

Specifications Seaeye Cougar Seaeye Cougar-XT
Depth Rating 2000 msw 2000 msw
Length 1506 mm 1515 mm
Height 745 mm 790 mm
Width 1000 mm 1000 mm
Launch Weight 335 kg 344 kg
Forward Speed 3 knots > 3.2 knots
Thrust Fwd 100 kgf 170 kgf
Thrust Lateral 72 kgf 120 kgf
Thrust Vertical 76 kgf 110 kgf
Payload 80 kg 80 kg


click image to enlarge
Click to enlarge


The extremely rugged polypropylene chassis with a stainless steel lift frame, is totally maintenance free, non corroding and self-supporting in seawater. The design allows for additional equipment to be directly bolted to the chassis for ready customisation.

Seaeye was the first company to introduce polypropylene for the construction of ROV frames.

The syntactic foam buoyancy block is split into two sections for easier handling and access to vehicle components. Apertures are provided for sonar, Xenon strobe and tracking transponders.

Equipment Interfaces
A wide range of standard or custom interfaces are provided:

  • Manipulator & cutter interfaces
  • CP Interface (Proximity or Contact)
  • Obstacle avoidance, multi beam, profiling or side scan sonar
  • Bathymetric systems
  • Fixed focus, zoom and stills cameras
  • Emergency strobes and beacons
  • Tracking systems
  • 3-phase tooling supply
  • Auxiliary connections providing telemetry & DC power for other accessories

All Seaeye ROVs feature brushless DC thrusters which, apart from having the greatest power density, have integrated drive electronics with velocity feedback for precise and rapid thrust control. These thrusters are interfaced to a fast PID control system and a solid-state rate gyro for enhanced azimuth stability. These essential building blocks enable Saab Seaeye to provide superior control and response from their powerful ROVs and set them apart from the competition. The Seaeye Cougar-XT is no exception!

Four vectored horizontal and two vertical SM7 500 Volt brushless DC thrusters provide full three-dimensional control of a Cougar-XT.

Compass & Rate Gyro
A Flux-gate compass and a solid-state rate sensor are provided and give the Cougar-XT superior azimuth stability in forward flight and in auto heading.

Specifications Seaeye Cougar & Cougar-XT
Accuracy ± 1°
Resolution 0.351°
Update rate 98 mS

Depth Sensor
The system uses an electronic depth sensor accurate to ± 0.1% FSD accuracy.

Automatic Pilot
The compass, rate gyro and depth sensors provide an automatic pilot for depth and heading. Auto altitude is an option requiring the addition of an altimeter and software modification.

Video System
The standard configuration transmits multiplexed video over two multimode fibres in the umbilical/tether. This provides up to 4 simultaneous video channels.

Tilt Platform
The ± 90 degree camera tilt platform accepts two cameras and lights. A proportional tilt feedback potentiometer provides an accurate tilt angle which is displayed on the video overlay.

Pan & Tilt Unit (optional)
An optional Pan & Tilt platform with high torque output is available. The mechanical and electrical components used to operate the platform are housed in a robust unit designed for the harsh subsea environment. This improved Pan & Tilt Unit (PT35NM) is oil filled and manufactured from anodised aluminium.

Pan and tilt positional information is displayed graphically on the video overlay.

A total of 600 Watts of lighting is available as standard. Two individually controlled lighting channels are provided, both containing two fused 150W lamps. Each channel has its own brilliance control on the pilot's Hand Control Unit.

Vehicle Electronics Pod
The vehicle has one watertight electronics pod machined from 6082 marine grade aluminium and hard anodised in black.

The pod is fitted with Leak and Vacuum alarms.

Seaeye's range of metal shell connectors are mainly used throughout.

Tether Termination
The tether, or soft umbilical, is electrically terminated in an oil filled and pressure compensated Vehicle Junction Box (VJB). It is mechanically terminated using a Cable Grip.

For free swimming Cougars, the soft umbilical can optionally be mechanically terminated in a bullet suitable for use with a lock latch or ‘go devil’ for launch and recovery.


The usual range of ROV tools and sensors can be fitted to the core vehicle including additional cameras, lights, sonar, tracking systems and various probes and sensors.

Task specific tool skids, constructed of the same polypropylene material as the ROV frame, can also be readily added and changed for rapid turn around between dives needing different tooling packages.

These skids can be custom designed to suit each customer’s operational requirements and can include:

  • Manipulator packages
  • Anvil or disc cutters
  • Water jetting equipment
  • Torque tools
  • Survey packages including camera booms
  • Drill support and IRM tooling


Manipulator Skid
A typical Cougar-XT package will include a detachable dual 5 function manipulator tool skid. These manipulators have an integral 12 mm rope cutter. Alternatively, a combination of 5 function manipulator and 3 function grabber can be fitted.

5 Function manipulator and 3 function grabber skid  

Wire & Cable Cutter
The forearm of one of the manipulators can be replaced with an anvil or a rotary disc cutter, when specified.

5 function manipulator with 3 function grabber
head replaced with WCO 38 LP cable cutter
5 function manipulator (with water jet) and
3 function grabber head replaced with disc cutter

Wire Rotary Brush
A rotary brush assembly can either be fitted to the chassis, or to a manipulator arm in place of the forearm for spot cleaning. A Cougar thruster motor drives the brush head via a flexible coupling. The brush assembly is fitted on a shock absorbed mounting to prevent stalling the motor.

Skid fitted with spring loaded rotary brush  

Water Jet
A high pressure water jet system is available operating on 3-phase 440/660V power supply with directional control provided by the manipulator arm. Seaeye has also supplied special compact Cougar XT systems to Subsea 7 fitted with their own Subjet system for cleaning operations in the Southern sector of the North Sea.

Custom built Cougar XT systems for Subsea 7 with 'Subjet' water jetting  installed on tilt platform

Boom Cameras and Survey Equipment
Camera booms used for pipeline surveys can be fitted to a skid fixed to the Cougar ROV and controlled using the manipulator valve pack.

Conducting pipeline survey
Survey skid with TSS pipe tracker
(picture courtesy DNT Offshore, Italy)

AX Ring Removal Skid
This skid can be mounted piggy back under a standard manipulator skid.

Cougar with two piggy-back skids including
AX ring removal skid
AX Ring Tool Skid


Surface control equipment can be provided as free standing units for installation in a customer facility or integrated into a custom ISO ROV Control Cabin or Container.

The surface control system provides:

  • AC and DC supply switching control
  • DC current and voltage indication
  • Control of video and video overlay
  • A keypad for system configuration
  • Plugs and sockets for system connections and interfaces for ancillary equipment
  • ROV control system (remote from the Hand Control Unit)
  • Output to Telemetry monitor unit for RS232

Control data is transmitted between the surface Central Processor Unit (CPU), PCB and subsea CPU PCB via dedicated twisted-pair cables from the ROV using a half duplex RS485 communication link.

Hand Controller and Surface Control Unit
Dimensions   Height 265 mm
Width 484 mm

500 mm

Weight 20 kg

The system comes with two 15” colour video monitors that are multi-standard, dual-input with a 19” rack mounting kit.

Video Overlay
The monitors display the video information from the cameras and video overlay data as follows:

  • Heading data (in degrees)
  • Analogue Compass Rose
  • Depth in metres (or feet)
  • Tilt position (or Pan & Tilt position if fitted)
  • Date and time
  • Free text from keyboard
  • TMS Bail Count (TMS cable counter when used with TMS)
  • CP probe readings (if fitted)
  • Vehicle Turns Counter

Telemetry Monitor Unit
A Telemetry Monitor Unit is included in the spares kit. This interface unit with its associated software allows ROV data, such as heading and depth, to be displayed on a PC and/or exported to a survey computer. In addition to exporting data, it can be used for fault diagnostics.

A rack mountable keyboard is supplied for entering data and free text onto the video overlay.

Hand Control Unit
The Hand Control Unit (HCU) provides the interface between the operator and vehicle using a series of switches and controls. Working on a 5 metre ‘flying’ lead, the HCU controls the following:

  • Vehicle movement, direction and speed
  • Tilt control (Pan control for P&T Unit, if fitted)
  • Lighting
  • Safety thruster enable switch
  • Auto depth and heading
  • Additional camera selection
  • Propulsion system offsets and power settings

Hand Control Unit
Dimensions   Height 190 mm
Width 300 mm

150 mm

Weight 3 kg

System Power Supply
The Power Supply Unit incorporates a series of protection devices, interlocks and cooling fans. Internal AC and DC supplies are only distributed when remotely operated at the Surface Unit.

Full safety features include both AC and DC Line Insulation monitors (LIMs) that constantly monitor electrical leakage in the system. Both LIMs have trips and alarm indicators.

A new test facility allows the LIM to test the isolation of the system - without applying power. A new feature introduced with the Cougar-XT is a simplified menu driven set-up for umbilical current compensation in the PSU.

Surface Power Supply Unit
Dimensions Height 1300 mm
Width 600 mm

470 mm

Weight 229.5 kg

3-Phase 9 kVA Tooling Power Supply Unit
This unit provides a 3-phase 660V power supply at the vehicle for optional tooling. It is floor mounted and includes a Line Insulation Monitor, an over-current breaker and meters to display current consumption. The current meters provide useful feedback when tools such as cutters are used.

Optional 3 phase 9 kW tooling power supply
Dimensions Height 700 mm
Width 600 mm

415 mm

Weight 103.5 kg

Cabin Junction Box
The cabin junction box is a lockable container constructed in stove enamelled steel and provides easy access to all of the umbilical connections. It also contains fibre optic multiplexers for transmission of video data when using a fibre optic video transmission system.

Cabin Junction Box
Dimensions Height 600 mm
Width 400 mm

210 mm

Weight 29 kg

Three copies of the ROV system technical manuals and drawings will be provided as hard copy and CD-ROM copy, along with all equipment records and certifications.

System Power Requirements Seaeye Cougar
Input 3-Phase 380-440 (multi tap) VAC
ROV + Tooling 24 kVA
LARS (typical) 38 kVA

System Power Requirements Seaeye Cougar-XT
Input 3-Phase 380-480 VAC
ROV + TMS 24 kVA
Tooling 9 kVA
LARS (typical) 40 kVA
Cabin (typical) 12 kVA


A Seaeye Cougar-XT can be operated free swimming with up to 600 metres of soft umbilical.

For greater protection of the vehicle as it passes through the splash zone and for faster travel to and from the working depth, it is more usual to deploy this type of ROV in a garage Tether Management System (TMS).

LARS in stowed position with TMS and Cougar ROV ready for
Cougar TMS and LARS with optional
Snubber Rotator

A skid mounted 'A' frame, hydraulic power unit (HPU) and winch with an appropriate length of steel wire armoured lift umbilical is the most common Launch and Recovery System (LARS) used for vehicles like Cougar with a TMS. Seaeye Cougars, Panthers, Surveyors, Lynx and Tigers all use a common armoured lift umbilical. The picture above right shows a LARS with an optional snubber rotator fitted that allows the latched TMS to be orientated fore and aft between the 'A' frame legs during recovery.

Though generally more costly, crane-based alternatives are sometimes used where deck space is at a premium.

A LARS can be ordered for use ‘in safe areas of operation’ or to meet the ‘Zone 2 area’ explosion proof standard often required in the offshore oil and gas industry.

This garage-style TMS uses a bale arm arrangement to spool tether on and off a fixed drum without the complexity and additional cost of incorporating a slip ring. Up to 220 metres of tether can be accommodated which is remotely controlled by the ROV pilot.

The floor of the TMS can be adjusted to accept the additional height of a Cougar when fitted with a wide variety of available tool skids.