SeaSoar II - World's leading oceanographic data gathering vehicle

SeaSoar II - World's leading cceanographic data gathering vehicleSeaSoar is the world's leading open ocean towed data acquisition vehicle.  It is a robust, high performance towed undulating vehicle designed to be deployed from dedicated research vessels. It  has a proven record of reliability over many thousands of miles of operation.

 

It remains the first choice of leading oceanographic institutes who wish to make deep-water measurements because it has a large payload capacity and is capable of being towed at speeds from 9 to 12 knots, and undulation regimes from the surface to 500m on faired cable.   All data is transmitted to and from the vehicle via a conductive tow cable and interface unit to a PC for vehicle control, data storage and real-time display of data.  Sensors typically deployed from the SeaSoar II include: CTD, Fluorometer, Transmissometer, Nephelometer, Bioluminescence, Irradiance meter, Nitrate/ Nitrate sensor, Plankton Sampler, and Satellite truthing bands sensors.

 

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Applications

  • Real-time collection of oceanographic data
  • Ecosystem health monitoring
  • Fisheries research
  • Military oceanography
  • Upper ocean dynamics
  • EEZ monitoring

Features

  • Large payload capacity with excellent accessibility to instrumentation
  • Versatile choice of instrumentation
  • Wide tow speed range (9 to 12 knots)
  • Undulation depth range from 0 to 500m
  • Windows based operating system
  • Custom configurations
  • Generates its own power for vehicle control
  • Real-time vehicle control with manual override
  • Bottom information system available

How does it work?

SeaSoar II is a versatile towed undulating vehicle used to deploy a wide range of oceanographic monitoring equipment. Developed by CTG from an original design by the National Oceanographic Centre, Southampton, UK it has a proven track record of reliability over many thousands of miles of operation. SeaSoar is controlled by an hydraulic unit, control valve and depth sensor. The hydraulic unit is powered by an impellor, and is linked to a pair of externally mounted wings. The undulation required is set by the operator at the surface using a PC based control system.

 

The SeaSoar II offers a large area into which oceanographic sensors can be fitted, which can typically include CTD, Fluorometer, Transmissometer, Nephelometer, Bioluminescence, Irradiance meter, Nitrate/ Nitrate sensor, Plankton Sampler, and Satellite truthing bands sensors. The MiniPack CTD-F is offered as the sensor ‘hub’ onto which the majority of the auxiliary sensors are connected to, and which sends the main oceanographic data set to surface. Other third party CTD’s can be used for this purpose.

Specifications

The standard system comprises the underwater vehicle, hydraulic unit, towing bridle, deck control unit and PC based 'CFlightWin' SeaSoar Flight Control Software.The sensor payload can be designed to meet individual customer's requirements.

 

SeasSoar body

Dimenions 2m (L) x 1.60m (W) x 0.98m (H)
Weight in air 150kg (including hydraulic unit, excluding sensors)

 

Operating profile

Control Profile input at deck unit for automatic control of wings or manual over-ride
Depth range 0 to 500m faired cable (0 to 100m unfaired)
Towing speed 9 to 12 knots

Maximum rate of change of depth

+/- 3m/s (fairedcable)

+/- 1m/s (unfairedcable) Payloaddependent

 

Engineering details

Flight programme CFlightWin
Wing servo

Moog valve analogue control with depth sensor feedback loop

Materials Strengthend glass fibre reinforced body; Stainless steel frame & towing yoke

 

Support systems

Winch

Dedicated winch & cable system is required
Cable Rochester 7-H-314AXX (high strength armour) or equivalent
Fairing Flexnose(R) type fairing is recommended

 

Note: Maximum depth achived is dependant on system configuration

In view of our continual improvement, the designs and specifications of our products may vary from those described.

Deployment

Learn more about your options for deployment - Winches, Cables and Fairing

Chelsea Technologies Group can supply complete turnkey towed undulating vehicle systems with deployment equipment including a winch, cable, and when required fairing to suit user applications. Customers may already have deployment equipment available, and in these cases we can access its suitability for use. Chelsea offers customer support, advice and assistance to ensure you get the best out of your towed vehicle system.  Professionally qualified personnel can provide commissioning and full training on all parts of the system. We will work in partnership with you to ensure a long and useful life for your vehicle.

Download

Want to know more?
Download the SeaSoar II Datasheet
 

Watch the SeaSoar II oceanographic vehicle being towed and deployed from HMS Echo