New Lightweight Side Scan Towfish

EdgeTech has released a new lightweight version of their 4200-FS towfish, the 4200-FSL. The system itself will now be called the 4200 Series Side Scan Sonar System. When purchasing the 4200 Series, the user can choose between either the stainless steel 4200-FS towfish for deeper operation of up to 2,000 metres or the new lightweight aluminum 4200-FSL towfish for shallower operation of up to 300 metres. Both of these towfish are available with either 120/410 kHz or 300/600 kHz dual simultaneous frequencies depending upon the user’s desired applications. In addition to selecting the towfish type and frequencies, the user also... (read more)
2006-07-28 12:00:00

GeoSurvey Updated to Support EdgeTech Towfish Range

Coda Octopus has released version 7.2.0 of its GeoSurvey software suite. This has been updated to support the latest digital acquisition interfaces for the EdgeTech range of towfish. The supported towfish include: 4125, 4200 and the combined sonar range. Liaising with the EdgeTech development team on site at Boca Raton, Coda Octopus Product Support tested and validated the updated towfish interfaces. GeoSurvey software provides an integrated platform for sidescan and sub-bottom acquisition. With a series of options within the DA4G range, including both analogue and digital acquisition interfaces, and backed up with unrivalled global service and support, CodaOctopus:GEO remains the... (read more)
2017-04-10 10:34:57

Royal Canadian Navy to Use Aurora Towfish

International Submarine Engineering Ltd is to provide two commercial off-the-shelf, high-speed Aurora Towfish, which will be used to support mine detection missions and route survey operations for the Royal Canadian Navy’s maritime coastal defence vessels. The Aurora Towfish will include modifications to integrate new sensors and navigation equipment, including an L3 Klein side-scan sonar, and an R2Sonic bathymetric multibeam echosounder. The modular design of the vehicle makes it easy to exchange sonar payloads. The Aurora towfish has been proven as a viable component of the Royal Canadian Navy’s Route Survey strategy. In conjunction with the Dorado Semi-submersible Technical Demonstrator, Aurora... (read more)
2013-02-18 11:33:37

MH370 Search to Recover Towfish

On 21 March 2016, the failure of a tow cable connector resulted in the loss of the SLH‑ProSAS‑60 towfish and the attached depressor that was used for the search for MH370. The two items were connected by 50 metres of synthetic tow rope. The torpedo-shaped depressor weighs up to 800 kilograms and acts to keep the slightly positively-buoyant towfish at the right depth as it is towed through the water. RV Dong Hai Jiu 101 departed for the search area on 11 April 2016, carrying Phoenix International’s Remora III remotely-operated vehicle (ROV). The ROV will be used in the recovery... (read more)
2016-04-13 01:57:15

Klein Marine Selects Greensea Inertial Navigation for Multibeam Side-scan Sonar Towfish

Klein Marine Systems, a leading supplier of side scan sonar equipment and waterside security and surveillance systems, has chosen Greensea Systems to provide SWaP-C optimised inertial navigation for their high-performance side-scan sonar towfish products. The products utilise Greensea’s open architecture operating platform (OPENSEA), and a patent-pending heading alignment methodology. "We chose the Greensea INSpect GS product family due to the price/performance alternatives offered as well as the additional sensor options that it supports,” said Dean Fleury, director of engineering for Klein. “The interface to the system is straightforward and the integration activities unfolded smoothly and quickly. The Greensea team was... (read more)
2018-10-26 11:03:32

Wing Depressor for C-MAX Sidescan Sonar

C-MAX Ltd has introduced a new hydrodynamic wing depressor for use with their CM2 digital sidescan sonar. The design of the CM2 towfish allows this high-aspect-ratio wing to be positioned below the tow point without obstructing the acoustics.   The wing typically increases the towfish depth by 50%, or reduces towfish layback by the corresponding amount. C-MAX claims that this wing is significantly more efficient than the usual top-mounted delta-fin depressors.   The wing weighs only 5kg and has handles allowing easy launch and recovery of the towfish. A clip-on tail unit ensures that the motion of the towfish and... (read more)
2007-07-02 04:31:13

Kraken Launches KATFISH High-resolution Sonar System

Kraken Sonar, Canada, has deployed KATFISH (Kraken Active Tow FISH), a sonar platform for military and commercial applications. KATFISH is a key development objective in delivering on the Company’s 'sensor-to-systems' strategy. At the moment, the KATFISH system has successfully completed proof of concept sea trials using Synthetic Aperture Sonar. The primary objective of the KATFISH project is to develop an actively controlled, intelligent towfish as a platform for a real-time ultra-high resolution seabed mapping system, based on Kraken’s Miniature Interferometric Synthetic Aperture Sonar (MINSAS) technology and Real-Time SAS Processing algorithms.  The KATFISH system is comprised of an actively controlled smart... (read more)
2015-07-23 08:35:00

Ultra-high Frequency Side-scan Sonar

EdgeTech has recently developed a new 600/1600 kHz frequency set for their popular 4125 Side Scan Sonar System. This new frequency combination is part of a variety of enhancements that have recently been made to the 4125. The new 600/1600 kHz towfish was designed specifically for search & recovery, port security and small target identification applications. The customer can now choose between this new frequency offering or the 400/900 kHz 4125 towfish, which is the perfect tool for shallow water survey applications.     (read more)
2010-08-16 03:51:59

GeoAcoustics Digital Side Scan Sonar

GeoAcoustics has launched the Sonar 2094 Digital, based upon the GeoAcoustics Dual Frequency Side Scan Sonar. Around a thousand of these systems have been sold since their 1994 launch and hundreds of thousands of line-kilometres have been surveyed across the world's oceans. The system adds to the characteristics of its predecessor the benefits of digital technology. The Sonar 2094 Digital is capable of•Simultaneous dual frequency, 114 kHz and 410 kHz •24bit data acquisition offering a dynamic range that makes acquisition AGC and TVG obsolete thus providing repeatable results •Extended range performance through 20 MHz raw data sampling and dynamic digital... (read more)
2010-07-08 08:47:13

Odyssey Marine Exploration Extends Positioning Range with Sonardyne GyroiUSBL

Odyssey Marine Exploration has successfully evaluated subsea technology allowing a geophysical towfish to be tracked at distances far greater than current methods allow by during trials in the Bay of Biscay. The Sonardyne Ranger 2 GyroiUSBL system was able to track Odyssey’s latest deep tow side-scan platform at a slant range of 7,500 metres from its vessel, Odyssey Explorer. Only the depth of the ocean prevented greater ranges being achieved. Inverted USBL Long layback tracking of towfish has traditionally always been a major challenge for conventional Ultra-Short BaseLine (USBL) acoustic positioning systems due to the very long slant ranges involved and... (read more)
2015-12-01 11:00:32
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