Automatic Calibration for MBES Offsets

A New Way to Monitor Your Data
Currently, calibration of MBES for hydrographic surveys is based on the traditional ‘patch test’ method. This subjective method, although rigorous, has major drawbacks, such as being time-consuming (both data acquisition and processing) and supposing that potential angle misalignments can be considered as uncoupled. A new algorithmic solution, providing an objective and repeatable first step to the automation of the calibration process, is offered through the MSPAC solution. Hydrography is essential in many marine activities: Ensuring navigational safety for nautical charts and dredging. Acquiring accurate knowledge of environmental background for offshore installations and dredging. Modelling the seabed for marine energy prospection.... (read more)
2020-09-29 10:45:33

Finnish Diving Team Discovers Rare Wreck of 17th-century Dutch Merchant Ship

While undertaking documentation dives on some supposedly World War I or II wrecks at the mouth of the Gulf of Finland, Badewanne divers descended on one of the biggest surprises during their long careers of diving the wrecks of this eastern extension of the Baltic Sea. The Baltic Sea has been an important trade route since the Middle Ages, as the navies of Holland and England needed endless supplies of wood, tar and hemp, all of which were available around the Baltic. From the 13th century onwards, the Hanseatic League controlled the trade, but during the 17th century the very... (read more)
2020-08-28 02:00:30

Bathymetry and the Power of Sound

How a Single Device Can Change Our Understanding of the Depths Below Us
The single-beam echosounder has come a long way. First developed in the early 20th century in response to the RMS Titanic disaster of 1912, early models used a Fessenden oscillator to generate a signal of around 1kHz. The resulting broad beam was suitable for depth measurements and the location of large targets – a huge technological step forward – but incapable of the fine resolutions required to gain information as to the nature of the seabed. Jump forward a little over a century and the picture is very different. Advanced systems, working across multiple frequencies, can operate with beam widths as... (read more)
2020-08-18 08:35:03

TDI-Brooks Maps the Liberty Ship Reef Site George Vancouver

TDI-Brooks recently mapped the Liberty Ship George Vancouver Reef off Freeport, Texas while out on a seabed survey project with the RV Brooks McCall. The multiple multi-phase geophysical and geotechnical site surveys programme consisted of pipeline routing and subsea structures to facilitate route and project design for offshore developers. Equipment used to map the ship was a Teledyne Reson SeaBat T-20 multibeam sonar with integrated Applanix POSMV for Motion. Applying the mesh tools to the multibeam survey shows an example of the shipwreck. Texas has been involved in artificial reef development for nearly 50 years. Numerous reef building materials have... (read more)
2020-08-12 09:38:50

German U-boat Surveyed a Century after Wartime Sinking

A First World War German submarine has been surveyed for the first time since its loss in 1917. Sophisticated scanning techniques and deep-sea video footage have revealed a large hole in the boat's hull – caused by an attacking British naval vessel. During the summer of 2020, scientists led by deep-sea archaeological expert Dr Rodrigo Pacheco-Ruiz of the University of Southampton, in collaboration with offshore survey companies MMT and Reach Subsea, investigated the wreck of UC-47 on behalf of Tolmount Development during offshore operations to prepare for the laying of a new pipeline in the North Sea, some 20 nautical... (read more)
2020-08-07 01:29:02

Fugro Begins Extensive Site Characterization for ScottishPower Renewables’ East Anglia Hub

Fugro has begun the geophysical survey phase of a large multidisciplinary site investigation contract worth around GBP55 million for ScottishPower Renewables’ (SPR’s) East Anglia Hub project. The phased site investigations are scheduled to finish at the end of 2021 and support the development of wind farms in the UK southern North Sea over an area of more than 800 square kilometres. The results from Fugro’s site characterization will feed into SPR’s ground models for the East Anglia Hub and support seabed mobility assessment, foundation design and cable-route engineering. Operating from dedicated geophysical survey vessels, the Fugro team began the UXO... (read more)
2020-08-04 09:38:18

Submerged Munitions, No Hazard Left Undetected

Minimum Requirements for Munitions Detection at Sea
Munitions in the sea pose a risk to the sustainable development of the ocean economy. In particular, they are a global challenge during the construction of wind parks, pipelines and other infrastructure. To ensure high-quality performance during the execution of the necessary maritime munitions detection and clearance operations, industry experts and scientists from Germany have defined a set of requirements. These are particularly important in the detection phase which requires the attention of hydrographic surveyors. Safe access to large areas of the seafloor is a prerequisite for offshore economic development. However, this ability has been compromised by the presence of... (read more)
2020-07-20 02:06:12

Sonardyne Underwater Positioning to Support Fugro’s Offshore Wind Operations in North America

Leading geo-data specialist Fugro has chosen underwater positioning technology from Sonardyne for its upcoming offshore wind farm projects in North America. The company has ordered three Sonardyne Mini-Ranger 2 Ultra-Short BaseLine (USBL) underwater positioning systems to support shallow water site characterisation surveys, and a standard Ranger 2 for positioning geotechnical boreholes that will influence turbine foundation design and installation. In addition, Fugro has also ordered Wideband Sub-Mini 6+ (WSM 6+) and Nano transponders to fit to the underwater equipment it will be tracking with its new USBLs, including side-scan sonars and transverse gradiometer systems.  Very shallow and high-elevation tracking Mini-Ranger... (read more)
2020-07-17 11:01:54

Ifremer Selects iXblue’s Technology to Equip Its New 6000-metre AUV

Ifremer, the French National Institute for Ocean Science, has chosen iXblue, a global high-tech company specializing in the design and manufacturing of innovative systems and solutions devoted to inertial navigation, subsea positioning and underwater imaging, to equip its new 6000-meter AUV (CORAL* project). The AUV will be equipped with a Synthetic Aperture Sonar (SAS), Sams-150, a Phins C7 Inertial Navigation System (INS), a sub-bottom profiler Echoes 5000 and will use iXblue’s Delph Software suite for SAS and navigation post-processing. “We are very excited to be on board the CORAL project and to offer turnkey SAS technology to Ifremer scientific and... (read more)
2020-07-17 10:13:13

First Fully-autonomous Shallow Water Survey

Geodata specialist Fugro has completed the Middle East’s first fully autonomous geophysical shallow-water route survey. Controlled from their remote operations centre in Abu Dhabi, an unmanned surface vessel (USV) captured a full range of geophysical data across a survey area of some 40km out from the coast of Abu Dhabi to support a client’s critical project, entirely remotely. The results of the fully autonomous geophysical shallow-water route survey comprised conductivity, temperature, depth and salinity (CTDS) profiles, bathymetry data, seabed imaging, sub-bottom profiles, and ferrous object detection such as pipes, etc. The efficiency gains and material reductions from using Fugro’s remote... (read more)
2020-06-24 12:34:11
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