New Subsea Survey Collaboration Completes First Joint Project

An up-and-coming name in the subsea sector has successfully collaborated with a leading provider of data collection to complete their first joint project in the south Caribbean Sea. Sulmara Subsea recently joined forces with XOCEAN to deliver a seabed survey off the coast of Aruba on behalf of SeaDrill using an XO-450 Unmanned Surface Vessel (USV). Operating 15km off Barcadera Port on the Western side of Aruba, the USV completed the 26km2 seafloor survey in 70m of water using high resolution multibeam. The objectives were to identify any seafloor features and classify the seabed to allow moorings to be safely... (read more)
2020-08-14 10:32:05

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 program 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... (read more)
2020-08-07 01:29:02

Mapping the Subsea Forests of the Mediterranean

Reviewing Remote Sensing Image Classification Techniques for Accurate Seagrass Mapping
What is the best image classification technique to optimize maps so that effective action can be taken to conserve seagrass meadows? The distribution of Posidonia oceanica seagrass meadows has been mapped by a combination of remote sensing techniques, geographical information systems (GIS) and sonar data. A fundamental, but challenging, part of this methodology is the remote sensing image classification. This article presents a review of different image classification techniques to optimise the final maps, so that effective action can be taken to conserve seagrass meadows. The degradation of P. oceanica seagrass meadows is a major concern as these marine ecosystems... (read more)
2020-08-04 09:03:05

Beagle Gulf Hydrographic Survey in Full Swing

Precision Hydrographic Services (PHS) has recently been contracted by the Australian Hydrographic Office (AHO) to undertake a hydrographic survey in Beagle Gulf, located in the Northern Territory of Australia, to determine the local bathymetry for navigational purposes. The hydrographic survey is taking place between the beginning of July 2020 and the end of August 2020, with two survey vessels, the Limitless and PHS Zephyr, both displaying flags (India over Romeo – conducting survey operations) while undertaking survey. The survey will be measuring oceanographic parameters including currents, tides and wave height in the immediate area, with oceanographic measurements recorded by utilizing... (read more)
2020-07-28 08:57:09

Clemens Kirchner

Clemens Kirchner has been employed as a project manager at Boskalis Hirdes since 2014. In recent years, he has been involved in the planning and execution of numerous successful offshore UXO clearance projects, utilizing various survey and clearance technologies in the German, British and Danish sector. (read more)
2020-07-20 02:20:03

Torsten Frey

Torsten Frey is a researcher at Leipzig University. As a team member of the research project RoBEMM-OffVali, he is the lead author of the Quality Guideline for Offshore Unexploded Ordnance Treatment. In his current research he focuses on risk based decision making during UXO clearance operations. (read more)
2020-07-20 02:19:16

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 remain 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 hydrographical 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

Fugro Starts Vattenfall Site Investigations at UK Offshore Wind Farms

Fugro has begun a four-month marine site characterisation campaign for Swedish energy group Vattenfall at two major offshore wind development sites located over 40 km off the coast of Norfolk, UK. The resulting Geo-data from Fugro’s geotechnical investigations will feed into the ground model for the Norfolk Vanguard and Norfolk Boreas wind farms, which will have a total installed capacity of 3.6 GW, enough to power more than 3.9 million homes. Working from its dynamically positioned (DP2) geotechnical drill ship Fugro Scout, Fugro is performing surveys and sampling using its proprietary SEACALF Mk V DeepDrive cone penetration testing system at both sites, and will... (read more)
2020-07-20 10:50:25

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
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