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Towed Undulating Oceanographic Vehicles

Chelsea has been at the forefront of the design, manufacture, supply and commissioning of commercial quality, towed undulating instrumentation platform and systems for over 30 years. These undulating platforms have to date gathered millions of  miles of ocean data. Such success is perhaps not surprising in view of the benefits these tools offer both scientists and surveyors. The sheer quantity of data that can be reliably collected from these vehicles while a vessel is underway, has led to the sale of more than 150 towed vehicle systems to research, commercial and defence organizations around the world.  Chelsea's vehicle have collectively travelled millions of kilometres through the oceans and seas, demonstrating an impressive reliability record and generating a wealth of operational experience, offering a simple robust method of mapping the upper ocean layer as well as mapping coastal characteristics.

nushuttle towed vehicleNuShuttle is a proven, low cost and robust towed undulating vehicle in use on ships of opportunity and research vessels. It can be fitted with a wide variety of sensors to provide data on CTD, chlorophyll, hydrocarbon & Gelbstoff fluorescence, turbidity, optical transmittance, bioluminescence, nutrient, redox & dissolved oxygen.

SeaSoar II CoverSeaSoar II  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. 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.

Range of winches to suit all needsWinches, 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.

Towed Vehicle Comparison

Chelsea has a vehicle to suit your needs and budgets

Chelsea Technologies Group is the world's leading designer & manufacturer of towed oceanographic platforms. We can offer small portable systems for use from small research vessels or ships of opportunity to large, dedicated systems that are permanently installed on ocean going research vessel.     

Specification Comparisons: NuShuttle 
Low cost, large payload vehicle which can be towed from research vessels & ships of opportunity at speeds of 5-15 knots, to operational depths of 150m.

Seasoar II
The world's leading open ocean towed undulating vehicle capable of undulating from the surface to 500 metres at tow speeds of up to 12 knots.

Length: 1.3m  2m 
Width: 0.5m 1.60m
Height: 0.6m 0.98m
Weight in Water: 72kg 150kg
Towing Speed (knots) 5 to 15 9 to 12
Depth Range: (faired cable) 0 to >150m 0 to 500m
Depth Range: (unfaired  cable) 0 to 80m 0 to 100m
Dive/Climb Speed up to 2m/s up to 3m/s

Contact Us:

55 Central Avenue
West Molesey
Surrey
KT8 2QZ, UK

Tel: +44 (0)20 8481 9000
Fax: +44 (0)20 8941 9319