Fugro’s Bathymetric Lidar Improves Hydrographic Data Collection in Australia and Pacific Region

Fugro has successfully trialled a major upgrade to its Fugro LADS airborne lidar bathymetry (ALB) system. The enhanced LADS HD+ technology was developed in Fugro’s laser laboratory in Adelaide, Australia, and is a sophisticated hydrographic mapping system that accurately measures water depth in both the marine and coastal zone environments. The new advances to the system have doubled the laser speed and the swath width and improved the object detection of the system, greatly increasing data collection efficiency for nautical charting. The system builds on the proven Australian-developed LADS technology and has been designed for safe, high-speed and cost-effective surveys... (read more)
2020-09-10 02:51:26

Saab Seaeye Panther Selected for Pipeline Inspection in Gulf of Mexico

For pipeline inspection in the Gulf of Mexico, global maritime, survey and ROV services operator ACSM chose an electric Saab Seaeye Panther XT robotic vehicle over other ROV vehicle alternatives. The Panther inspected 261 pipelines totalling 2,340km in four fields in the Gulf of Mexico (GOM), at depths ranging from 15 to 130 metres, in a less than 10-month project duration. ACSM chose the electric Saab Seaeye Panther because it can perform the full scope of work needed, yet is far smaller than hydraulic equivalents. Considerable savings come from deploying the 700kg Panther system rather than the much heavier hydraulic... (read more)
2020-09-07 09:22:03

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

Using Unmanned Surface Vehicles for Bathymetric Dam Imaging

A North American Case Study with Wide-ranging Applications
Inspection of dams is a high-risk task for divers because of strong currents and eddies. The use of emerging technologies such as unmanned surface vehicles equipped with echosounders and sonars can lower those risks. Such systems can perform subsurface dam inspections quickly and effectively without putting humans at risk, as this US case study shows. Overused roads, outdated railway systems, brittle power grids, crumbling bridges and suchlike all take a toll on the economy and, tragically, sometimes even lead to loss of life. Failing infrastructure is an issue for most countries, and likely more so in developed nations that still... (read more)
2020-06-16 09:28:06

Subsea Autonomy is Moving Beyond Waypoints

Underwater an AUV Must Rely Upon its Own Sensor Network
The AUV has been the tool of choice for shallow-water MCM and EOD operations for a number of years. The coverage by popular news channels of unfortunate events, such as the MH370 tragedy, has also shown that the AUV has undisputedly become the tool of choice to carry out salvage operations at extreme depths. The AUV has no physical link to the surface and the majority of missions are still pre-programmed by a human, which can be time consuming and error prone. Missions are normally a sequence of defined waypoints where the AUV may be required to carry out certain... (read more)
2020-06-09 09:41:02

Mapping Underwater Terrain with Bathymetric Lidar

Two Similar Projects in Different Parts of the World
High-resolution bathymetric surveys support aquaculture research and increase navigational safety. In a case study, Tim Webster reports how this is done at Cape John Peninsula in Canada. In the second one, Carol Lockhart describes the project in the Kingdom of Tonga, a Polynesian archipelago comprising 169 islands that stretches across approximately 800 kilometres in the South Pacific Ocean. Measuring water depth for nautical purposes dates back to ancient civilisations. As technology has evolved through the centuries, besides ship-based echo-sounding, remote monitoring and mapping of water bodies has become increasingly available via Lidar bathymetric surveys conducted by airborne systems. New coastal... (read more)
2020-06-09 09:01:41

Research Expedition to Map Scottish Seabed

Slow Recovery of Coral Reef Shows Impact of Bottom Trawling
Newly developed 3D imaging technology has allowed scientists to map Darwin Mounds, a unique area of cold-water coral reefs off the coast of Scotland, to see whether it has recovered since being declared a Marine Protected Area sixteen years ago. The images show that in areas of the Darwin Mounds that had been heavily trawled, coral growth is still very sparse, and there has been no real recolonization. However, healthy coral growth was found in parts that had only been minimally damaged by bottom trawling, indicating that marine conservation measures are most effective when they are put in place before damage occurs.... (read more)
2020-05-18 01:46:12

Unique Group Signs Exclusive Agreement with OTAQ Offshore

Integrated subsea and offshore solutions provider, Unique Group, has recently signed an exclusive rental agreement with UK-based OTAQ Offshore to represent the latter’s technology and products across the Middle East, APAC and the Americas. Experts in engineering and manufacturing underwater leak detection systems, laser measurement and video processing technologies, OTAQ Group supports customer activities in the offshore energy, aquaculture, commercial diving, defence and oceanographic research industries worldwide. The addition of OTAQ products to Unique Group’s diverse portfolio of survey equipment solidifies Unique Group’s consistent effort to provide customised integrated solutions to clients. Offshore Projects The agreement will see Unique Group... (read more)
2020-03-30 09:45:48

Securing Offshore Oil and Gas Infrastructure with USVs

Employing commercial-off-the-shelf USVs that can be rapidly reconfigured with a diverse range of sensors can enhance the ability to deliver energy to America and the world. This is a win-win for the energy industry, says George Caldorisi when he describes the securing of oil and gas infrastructure with Unmanned Surface Vehicles. While the exigencies of climate change have led to major strides in the development and deployment of renewable energy sources such as solar, wind and others, the world’s energy needs will continue to be met primarily by oil and natural gas for the foreseeable future. As readers of Hydro International are well aware, the strategic implications of the United States’ transition from energy dependence to energy independence to becoming a net oil and gas exporter are being felt worldwide. While some saw this sea change coming, most did not, and the community of nations is still coming to grips with... (read more)
2020-04-06 09:50:21

Gaps M5, an Omnidirectional USBL System for Accurate Location

iXblue, a provider of navigation, subsea positioning and imagery solutions, announces the launch of the Gaps M5, a new compact, export-free and omnidirectional USBL system for accurate location, positioning and tracking of subsea assets. The latest addition in iXblue’s new USBL product range, the new Gaps M5 joins the renowned Gaps (now Gaps M7). Gaps M5 integrates an Attitude and Heading Reference System based on iXblue FOG technology for stable heading, roll and pitch compensation and a true north reference. Smaller, lighter and easy to install, Gaps M5 is ready-to-use and calibration-free. It offers accuracy better than 0.5% up to... (read more)
2020-03-17 09:38:09
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