Page 55: of Marine Technology Magazine (March 2006)

www.seadiscovery.com Marine Technology Reporter 57

GD-A Seabed Classification system, the successor to the RoxAnn System.

RoxAnn was developed more than 20 years ago as an aid to the commercial fisherman, as it automatically linked the seabed type information available from an echosounder with the posi- tion of the vessel. The system was fur- ther developed for scientific use and has been routinely used in many seabed mapping studies with applica- tions as diverse as dredging, fisheries habitat management, environmental pollution control, sea grass and coral population research and assisting hydrographic offices in creation of navigation charts. At 200 x 110 x 60 mm and 600g, it is considerably smaller and lighter than the older ver- sion.

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Tools from Rotech

Rotech Subsea's Mass Flow

Excavation tools offer three sizes of tools that can accomplish various subsea excavation requirements. The patented gyroscopic technology allows for complete stability and con- trol as the tool is lowered into the water. As the counter rotating impel- lors bring in the water, it is redirected to the seafloor creating a high veloci- ty, yet low pressure column that can cut through sheer strengths as great as 1,750 psf. The tools can work in depths from 5 to 5,000 ft.

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Products from RS Aqua

RS Aqua will feature the

WaveRadar Rex, which measures wave activity and precision sea surface level from structures; the OptodeSys, optical sensors; the AADI "Mira"

Visibility Sensor; the Trilogy, the new bench top fluorescence, absorbance and turbidity laboratory fluorometer from California based Turner Designs

Inc.; the Aanderaa Optode; the

Datawell Directional Waverider buoys, which offer HF radio and

Orbcomm satellite data transmissions to a centralized reporting center run by service provider Gardline

Environmental Ltd; Vitrovex glass products, OBS-3+ Turbidity sensor from USA manufacturer D&A

Instrument Company, among many others.

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Positioner from Sidus

Solution

Sidus

Solutions' SS250 pan and tilt is a powerful robotic positioner. Users are able to posi- tion heavy loads with ease and accuracy. The SS250 blends dependability and effective- ness thru integration of synchronous motors and low backlash drives into a modular assembly.

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TRDI Launches New Products

Teledyne RD Instruments will launch two products for measuring water in motion and one product for motion in water. The two new tools for measuring water in motion include the DVS, Doppler Volume Sampler, and a new scaled-back version of the Workhorse ADCP. The DVS was developed by Teledyne RDI to support a multi-year contract from NOAA/PMEL for a next generation moored current profiler. The new low power DVS offers an advanced alternative to single point current meters. DVS incorporates Teledyne RDI's patented four-beam solu- tion to detect mooring line interference, and can measure velocity shear near the instrument. Teledyne RDI is also introducing a new entry level Workhorse ADCP designed for moored current profiling applications. The Explorer

Doppler Velocity Log (DVL) is the newest addition to the Teledyne RDI family of DVL products for measuring motion in water. Explorer has been designed to provide Workhorse precision in a package that meets the stringent weight and power constraints of this next generation of smaller, littoral vehicles.

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Products & Systems on Display at Oceanology International 2006 in London

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