Payload Upgrade for Bibby Tethra

In addition to performing planned five-year vessel maintenance, Bibby HydroMap has also upgraded a number of key systems on the 27.5m DP1 catamaran, Bibby Tethra. The most notable is the installation of a dual-head Kongsberg EM2040 multibeam echosounder, providing superior sounding density along track at a reasonable vessel speed. The single transmitted, dual receiver system allows surveying of up to 10 times water depth, thus matching the capability of the dual head Teledyne Reson 7125 on Bibby Athena. After being announced as the first buyers of Sonardyne's Mini-Ranger 2 USBL in April 2015, the high performance of the unit has... (read more)
2016-05-09 08:33:15

Lidar Bathymetry on the Alaskan North Slope

Inventory and Characterisation of More than 4,500 Shallow-water Bodies
In June 2014, the Bureau of Economic Geology, a research unit at the University of Texas at Austin, was contracted to conduct an airborne bathymetric Lidar survey on the Alaskan North Slope. The purpose of the project was to further determine, understand, and map the local landscape and thaw-lake attributes of an area west of the Dalton Highway and Sagavanirktok (Sag) River, approximately 30km southwest of Deadhorse, Alaska. Researchers from the Bureau had visited the area in 2012 and found bathymetric Light Detection and Ranging (Lidar) to be an effective tool for measuring the area’s lakes. The group returned in... (read more)
2016-04-04 10:08:41

A Flooded Landscape Revealed

3D Hydrodynamic Model Developed for Sustainable Water Abstraction
During the last week of a hydrographic survey of Lough Derg, Ireland’s third largest lake, the remnants of a preserved flooded landscape were unveiled beneath the surface with each passing swath. In early 2015, Geomara was commissioned by the utility company, Irish Water, to undertake a bathymetry and side-scan sonar survey of Lough Derg as part of the planning and design process for the Water Supply Project, Eastern and Midlands Region. This project aims to find a new water source to supply the future needs of the Midlands and Greater Dublin Area.  Over the course of a typically wet and... (read more)
2016-04-04 10:00:41

iXBlue Launches ROVINS NANO

On the evening before the opening of OI 2016, iXBlue literally unveiled the ROVINS NANO. This compact unit provides highly accurate positioning at all depths, including for middle water station keeping. ROVINS NANO has been designed for ROV pilots performing maintenance and construction operations. It offers the unbeatable stability and accuracy of the inertial position, outputting true north, roll, pitch and rotation rates. iXBlue also updated the audience on developments within the company. Where the Doppler Velocity Log (DVL) has limitations, especially when operating in middle water, ROVINS NANO is now there to guarantee optimal navigation safety. According to Paul... (read more)
2016-03-15 10:47:21

100 Successful SDM System Installations

Seatronics and Norwegian associates RTS have achieved 100 successful global installations with the Subsea Deflection Monitoring system (SDM). The SDM system aims to reduce the risk associated with both large and small installations. The system has an extensive history of successful operations in comparison to newer alternatives in the market. The SDM is a time-saving monitoring solution used for the deployment and installation of subsea structures. Time-stamped data from pressure and attitude sensors are transmitted through an ROV hot stab connection or an acoustic modem. When installing the structure, the operator has full online feedback of its heading and deflection. The... (read more)
2016-03-10 08:29:19

iXBlue to Equip Submarine Programme for Swedish Navy

Saab, Sweden, has entered into a seven-year contract with iXBlue to equip the two type A26 next-generation submarines with MARINS units, including fibre-optic gyroscope technology. Scheduled to be operational in 2024, the A26 is a high-tech submarine with proven modular design. The iXBlue MARINS inertial navigation system enables stealth autonomous navigation, providing very accurate heading, roll, pitch, speed and position, under severe GNSS-denied environment. Built by Saab, it is considered today as the world’s most modern submarine program. As the submarine will be specially built to operate submerged for extended periods, with excellent manoeuvrability in all waters, the inertial equipment... (read more)
2016-02-24 09:43:31

Impact Subsea Launch ISD4000 Depth & Temperature Sensor

Impact Subsea is launching the ISD4000 survey grade Depth & Temperature sensor with optional integrated HMRU, providing the user with heading, pitch and roll values. Designed for ROV & AUV underwater applications, the ISD4000 offers a significant degree of capability, in a small form factor. With a 0.01% full scale depth measurement accuracy combined with a Temperature measurement accuracy of 0.01°C the ISD4000 is at the forefront of depth and temperature measurement technology. Compact and Endurable At only 8cm (3.1”) long, 4.5cm (1.8”) wide and weighing just 0.42kg (0.93lb) in air makes the ISD4000 a highly compact unit. This form... (read more)
2016-02-01 12:06:12

Louis Dreyfus TravOcean Orders Two Saab Seaeye Leopards

Specialist submarine cable installation company Louis Dreyfus TravOcean, France, has ordered two Saab Seaeye Leopards for touchdown monitoring and support. The pioneering Leopard work vehicle, with its 11 thrusters and iCON intelligent control system, will provide TravOcean with a stable work platform that is unrivalled amongst ROVs – particularly in strong currents. Greater flight stability under variable loads is delivered by the iCON system - including pitch and roll stabilisation – to give stable flight even with large tools and sensors deployed. ICON independently manages each device on the vehicle, including auto redundancy to keep the ROV working even with multiple equipment... (read more)
2016-01-28 09:30:48

Rugged FOG-based INS for Demanding Autonomous Applications

KVH Industries, USA, has introduced the GEO-FOG 3D inertial navigation system (INS) offering roll, pitch, and heading accuracies of .05° for demanding applications in unmanned, autonomous, and manned aerial, ground, marine, and subsurface platforms, such as subsea remotely operated vehicles (ROV) or mining systems. The GEO-FOG 3D is based on the company’s high-performance fibre optic gyro (FOG) technology combined with centimetre-level precision RTK GNSS receivers and advanced sensor fusion algorithms. The result is a solution that continuously provides fast, ultra-accurate position, velocity, and attitude measurements that keep applications operating no matter how challenging the conditions. The core inertial sensor for... (read more)
2016-01-14 11:39:05

Plymouth University Receives AutoNaut Vessel

Researchers and students at Plymouth University, UK, will be able to use an advanced autonomous wave-propelled surface vessel thanks to a new deal signed with a leading UK designer. MOST (Autonomous Vessels) Ltd, based in West Sussex and Devon, is to provide one of its AutoNaut craft after entering into a licence agreement with the university through its Marine Institute. The licence includes access to a 3.5m pre-production model, designed to be sent out unmanned into the marine environment and used to conduct research. Propulsion by Pitch and Roll AutoNaut comprises a single hull with four moving hydrofoils that harness wave energy as... (read more)
2015-12-02 04:24:55
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