measurement unit is based on Fiber Optic Gyroscope (FOG) technology coupled with an embedded digital signal processor that runs an advanced Kalman filter. "Already the owners of more than 50 OCTANS, IXSEA's gyrocompass and full motion sensor for use in the oil and gas offshore construction market, Seatronics has now invested in PHINS 6000 to extend its range," said Nick Goodwin, Sales Director, IXSEA Ltd. "This reflects the growing desire for additional positioning capability for ROVs and other subsea vehicles in the ever-deepening theater of operation."
Eclipse Sonar Imaging System
Subsea visualization specialist SRD has introduced Eclipse, a new sonar imaging system with 3-D measurement capability. Eclipse is suited for all but the smallest subsea vehicles. A single housing incorporates an orthogonal pair of dual transmit and receive multibeam arrays, operating at 240kHz with a range of up to 120 meters. Eclipse can be used in Volume Visualization, Forward Looking and Profile Imaging modes. By electronically steering the horizontal or vertical transmit beam, a volume is illuminated ahead of the sonar. This is converted in real time into full 3-D image. 3D Volume Visualization provides a realistic graphical representation of scanned objects, ideal for ROV and AUV deployment in many subsea applications.
For more information, Email enquiries@srduk.com
New Sub-Bottom Profiler
The new SUBPRO 1210 SubBottom Profiler will be featured at OI '08 in London at booth 1120, which is shared with General Acoustics' UK representative RUCO. The SubBottom Profiler operates with 12
KHz and a peak power of up to 10 kW. Especially the use in very shallow water starting at 1.5 m, the high resolution and the 10 m penetration in sand will surprise visitors. General Acoustics also will exhibit its tide and wave gauge LOG_aLevel. The system is autonomous, calibration and maintenance-free and is operated on all continents.
For more information, Email info@generalacoustics.com
Cádiz Naval Hydro Office Installs New Multibeam
One of the most traditional hydrographic services is the Naval Hydrographic Institute in Cádiz (the oldest city in Europe). The first installation of a multibeam for shallow water took place in 2000 when the EM 3000D was installed on board a transportable hyrdrographic launch, the 12.5 m long Astrolabio (A91). The Navy decided to build a second launch, Escandallo (A92), which was equipped with an EM 3002D. Both launches were fitted with retractable
transducer arrangements, which enable the best hydrodynamic behaviour for signal reception. The next project was to extend the depth range, so both the H.V. Tofiño (A32) and Malaspina (A31) at 57 m in length, were equipped with EM 300 1ºx2º and EM 302 1ºx2º, respectively. Meanwhile several single beam echo sounders -- EA 600 (7 units) and EA 400 (5 units) -- with motion sensors and sound velocity probes have been installed on board the institute's small hydrographic boats.
12 KHz Transducer and Controller housing. www.seadiscovery.com
Marine Technology Reporter 57
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