Page 70: of Marine Technology Magazine (March 2013)

Instrumentation: Measurement, Processing & Analysis

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Products CDL Wins Tech Award A revolutionary underwater true north seeking inertial system developed by Aberdeen-based engineering company CDL for remotely operated vehicles (ROVs) and many other subsea applica- tions has won an award from the subsea industry. The company?s Tiny Optical Gyro Sys- tem (TOGS) scooped the prestigious Subsea Industry Innovation and Techni- cal Award, at the Subsea 2013 Awards Dinner, organized by Subsea U.K. and held at the Aberdeen Exhibition and Conference Centre on Wednesday, Feb- ruary 6.From its development just 24 months ago, the system, which comprises a three axis  ber optic gyro, has rapidly become accepted as an international in-dustry standard for ROVs which rely on heading and motion guidance to carry out essential operations.Small and lightweight, the TOGS has become an effective alternative to high cost, overly speci ed systems as well as lower cost ?spinning mass? gyroscopes which can be prone to reliability issues. It can be used in many underwater op- erations, particularly where space is limited and, with no moving parts and excellent shock resistance, provides a high degree of robustness and longev- ity. The system outputs all six degrees of freedom measurements to accurately track all aspects of an ROV or vessel motion. The surface variant of the sys- tem, TOGS-S, is fully IMO (Interna- tional Maritime Organisation) certi ed for heading navigation for surface ves- sels up to 85 knts. Koden Broadband Echo Sounder Mantsbrite Limited is now supplying the new Koden CVS-128B and CVS- 1410B FX2BB broadband echo sound-ers to its 175 strong U.K. and Ireland dealer network. The Koden CVS-128B and CVS1410B are dual frequency broadband echo- sounders with a 2kW power output. The CVS-128B has an 8.4? color dis-play and the CVS-1410B has a 10.4? color display. Two types of broadband transducer are available where the user can select and change a frequency as required to target speci c  sh species or avoid interference with other echo- sounders. The Koden TDM-017 broad- band transducer allows the operator to choose any two frequencies between 38kHz and 75kHz; with the TDM- 091D broadband transducer the op-erator can choose any two frequencies between 42kHz to 65kHz and 130kHz to 210kHz. The two chosen frequencies can be displayed simultaneously. New Obstacle Avoidance Sonar Sonardyne International launched its new Navigation and Obstacle Avoid- ance Sonar, NOAS, at NAVDEX 2013 in Abu Dhabi. Designed for use on submersible vehicles, NOAS enables faster, safer and more ef cient navi- gation by detecting and classifying potentially hazardous underwater ob- stacles in its path. NOAS is designed to provide a unique combination of very long range 2D navigation perfor- mance, 3D object detection and class leading intruder detection in a single compact sonar. In 2D mode NOAS provides the crucial long range navi- gation information enabling under- water vessels to steer a safe course. When combined with its 3D capabil-ity, the sonar scans the water column to enable more detailed detection and classi cation of obstacles and the sea- bed, in front of the vessel. The  rst in a family of products, NOAS has been speci cally devel- oped for installation on manned sub-mersibles and swimmer delivery ve- hicles (SDVs) where available space and power is often restricted. With this in mind, the compact subsea housing contains the 2D array, front-end elec- tronics and processing whilst a sepa-rate projector is used if the optional 3D capability is required. NOAS feeds fully-processed sonar images to, and is controlled by, the host plat- form?s own control system. CDL MD Andy DoggettMarch 2013 70 MTRMTR #2 (66-80).indd 70MTR #2 (66-80).indd 703/7/2013 11:05:47 AM3/7/2013 11:05:47 AM

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