Fugro Marinestar to Sponsor Hydrographic Data Acquisition & Processing Weeks

Fugro Marinestar, provider of a range of GNSS positioning services worldwide tailored for the dredging and marine construction, navy and hydrographic, wind farm and oceanographic research sectors, has become official sponsor of the Hydrographic Data Acquisition & Processing Weeks organized by 'Hydro International'. The online event will consist of a dedicated web page, extra newsletters and the bumper-packed November-December issue of 'Hydro International', the global magazine for the hydrography industry. During the Hydrographic Data Acquisition & Processing Weeks (November 9 – December 21), which will be supported by an abundance of new articles, columns, Q&As, videos and other new content, the Hydro International community... (read more)
2020-10-21 02:59:09

The Road to Autonomy: Unmanned Subsea Asset Inspection

Reducing Requirements for Manual Intervention
In 2019, Swire Seabed successfully used a novel AUV/USV solution to complete a commercial pipeline inspection campaign, surveying 175km of pipe. This involved use of a HUGIN AUV paired with the Sea-Kit Maxlimer USV. The 2019 survey campaign formed the final part of a developmental project involving Swire Seabed, EIVA, Kongsberg and Sea-Kit in which inspection work scopes were completed for Equinor. In this, emphasis was placed on the automation of survey processes, allowing remote command and control of operations. This work typifies the direction in which the industry is heading, with many survey companies now seeking to reduce requirements... (read more)
2020-10-20 08:58:57

Bathymetry from UAV Imagery and Machine Learning

Improving Results with Refraction Corrections
Accurate bathymetric mapping of shallow areas is essential for a plethora of offshore activities. Through Structure from Motion (SfM) and Multiview Stereo (MVS) techniques, images can provide a low-cost alternative compared to Lidar and sonar systems while also offering important visual information. This article presents a new framework for mapping the seabed in clear and calm shallow waters for small- and large-scale surveys using aerial imagery and machine learning to correct the geometric effects of refraction on the 3D point clouds and the imagery. SfM is a photogrammetric technique for estimating 3D structures from 2D image sequences. It involves acquiring... (read more)
2020-10-13 10:42:39

Bo Krogh

Bo Krogh, senior surveyor, has more than 35 years’ experience in hydrographic, engineering, environmental and archaeological survey projects, including offshore construction surveys, seabed mapping surveys, marine archaeology surveys with AUVs, AUV surveys under Arctic ice, pipeline route surveys, pipeline and cable laying, rock dumping, trenching and dredging, installation of subsea templates, and 3D seismic surveys. He has held positions such as AUV supervisor, company site representative, senior survey engineer, project engineer – survey & rock dumping, and offshore vessel manager, and has therefore gained vast experience as a project manager.  (read more)
2020-10-06 11:38:02

Measuring and 3D Mapping of Sea Ice in the Arctic

Underneath the Top of the Iceberg
Sea ice is one of the most important parameters when it comes to ice-albedo feedback; in other words, the fraction of incoming solar radiation that is reflected directly back into space. Because of the grave importance of the decrease in the amount of sea ice due to the climate crisis, gaining a full understanding of its complex structure is more important than ever. Both large and small Autonomous Underwater Vehicles (AUVs) have been used successfully to map the 3D structure of the underside of sea ice, but always in an experimental context. The challenge is to determine the best way... (read more)
2020-10-06 11:21:52

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

Kongsberg to Supply Four AUV Survey Systems to Indian Shipyard

Kongsberg Maritime has announced the sale of four HUGIN AUV systems to the Indian defence public sector shipyard Garden Reach Shipbuilders & Engineers Limited (GRSE), located in Kolkata, India. This sale has been conducted in collaboration with Kongsberg Maritime India, a subsidiary of Kongsberg Maritime. The purchase, which also includes HiPAP 502 high-accuracy acoustic positioning and communication systems to support AUV operations, will be installed on the four large survey vessels currently being built for the Indian Navy. GRSE chairman and managing director Rear Admiral (retired) Vipin Saxena said: “We are pleased and look forward to making use of the... (read more)
2020-09-29 09:07:44

MOSAiC Arctic Expedition Reaches North Pole

On 19 August 2020, the world’s largest and longest polar research expedition – known as MOSAiC – reached the North Pole after making an unplanned detour owing to lighter than usual sea-ice conditions. The expedition is now entering its final stage, during which researchers will study the last piece of the Arctic puzzle: the growth of new sea ice marking the end of the summer season. In September 2019, the German research icebreaker Polarstern set sail from Tromsø, Norway, to spend a year drifting through the Arctic Ocean – trapped in ice. After leaving the ice floe it had been... (read more)
2020-09-22 10:51:01

Spectra Geospatial GNSS Receiver Chosen for Solo Around-the-world Yacht Race

The Spectra Geospatial SP90m GNSS receiver has been selected by the racing yacht Maître CoQ for the 2020 Vendée Globe, single-handed, non-stop around-the-world yacht race. The Vendée Globe is an extreme endurance test for both sailor and boat and widely considered the ultimate challenge in ocean racing. The SP90m provides the skipper of the Maître CoQ, Yannick Bestaven, with precise position and boat heading information. The SP90m information is integrated into a separate attitude information source, and the entire package of the position, heading and attitude is sent to the boat’s autopilot. Bestaven, responding to the changing sea and wind... (read more)
2020-09-22 10:34:16

Veripos Launches SPAN GNSS+INS for Hydrographic Survey Applications

Veripos has introduced SPAN GNSS+INS technology from NovAtel, also part of Hexagon, into the offshore oil and gas marine market. NovAtel and its SPAN technology have accelerated developments in GNSS positioning, sensor fusion and inertial navigation systems for over 15 years. Now, Veripos brings this proven technology to the marine market to optimize your positioning solution with GNSS and inertial measurement units (IMUs) to provide heading, attitude and heave measurements on the open water.  Through deep coupling, SPAN technology fuses measurements from the GNSS receiver and the IMU together to calculate robust and reliable position, heading, velocity attitude and heave.... (read more)
2020-09-15 09:30:58
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