GeoAcoustics Returns to Independent Ownership

GeoAcoustics has returned to independent ownership following divestment from the Norwegian multinational Kongsberg Maritime AS. Kongsberg originally acquired the company in 2008 and it has been a part of the Sensors & Robotics business area. Based in Great Yarmouth in the United Kingdom, GeoAcoustics has been manufacturing marine survey equipment for more than 42 years, and it is a world-leading manufacturer of sonar survey systems for engineering, geophysics and naval survey applications. Principle product lines are swath bathymetry systems for shallow waters, side-scan sonars and sub-bottom profilers. GeoAcoustics’ general manager Dr Richard Dowdeswell commented: “This is an exciting chapter in... (read more)
2021-01-11 09:06:21

Sub-bottom Object Detection

An Update on the Main Innovations of the Past Years
While nautical charting mainly focuses on bathymetry and objects that form a hazard to shipping, offshore construction and dredging require sub-bottom information. There is nothing worse in any project than finding wrecks or unexploded ordnance (UXO) after construction has started. The detection of covered cables and pipelines is also an important survey objective. There have been some interesting innovations in this field over the past years and, while this article does not attempt to be exhaustive, it provides an overview of the various types of system available. The Sub-bottom Profiler The classic instrument for detecting bottom layers and sub-bottom objects... (read more)
2020-12-11 11:34:08

Ocean Infinity Selects Sonardyne for Pioneering Armada Fleet

Sonardyne technology has been selected to support the world’s largest and most environmentally sustainable fleet of ocean-going, multi-role robotic vessels, which is being launched by marine robotics company Ocean Infinity. Sonardyne systems will provide part of Ocean Infinity’s new Armada fleet with key sensor technologies for underwater platform navigation, tracking, control and communications, as well as ensuring uninterrupted surface navigation, even when global navigation satellite system (GNSS) services are degraded or denied.   The Armada fleet will mark a major technological advance, providing sustainable services to all corners of industry from offshore energy, to logistics and transport. The innovative, low-emission... (read more)
2020-12-11 10:35:54

Reference Area for Multibeam Bathymetry and Backscatter

KWINTE, a Dedicated Quality Control Area in the North Sea with Stable Seabed
Hydrographic measurements are nowadays usually carried out using multibeam echosounders (MBES). The measurements obtained by each operational hydrographic vessel need to be regularly controlled on a well-known area to validate the quality, both for bathymetry and backscatter. This can now be done in a small area in the Belgian part of the North Sea (KWINTE) with a stable and homogeneous seabed. Multiple high-quality surveys over this area have enabled the construction of a reference bathymetric and backscatter model. Extensive survey work over the KWINTE reference area has been carried out by Flemish Hydrography (VH) and Continental Shelf Service (COPCO) during the last decade, using... (read more)
2020-12-04 03:58:20

Fugro Wraps up Offshore Field Programme for Mayflower Wind in US

Fugro has successfully completed a large site characterization field programme off the coast of Massachusetts for Mayflower Wind, a joint venture between Shell New Energies and Ocean Winds (the global offshore wind collaboration of Engie and EDP Renewables). The six‑month programme involved comprehensive, high‑resolution geodata acquisition within the project’s 520km2 lease area and along the export cable routes. This data will support permitting, design and installation of the proposed wind farm, which could generate up to 800MW of renewable energy for over half a million homes. Fugro’s work on the project began in April and comprised four vessels and one aircraft... (read more)
2020-11-23 11:56:12

Hydrospatial and the Marine Environment

The First Steps to Going Beyond Charting
Hydrographic offices (HOs) today exist in a world of accelerating technological change that is influencing human behaviour and creating new needs and ways of exploiting data to understand our world. HOs have traditionally been the producers of nautical information for safety of navigation. By the end of the 20th century, with the appearance of the IHO S-57 Standard, their main challenge was to evolve into a central database production system. Now, the critical challenge and opportunity is to evolve from there into a true geospatial agency, developing a hydrospatial information system (HIS) capable of providing products and services for multidimensional analysis... (read more)
2020-11-23 11:19:07

Introducing mAUV – MARIN’s Modular Autonomous Underwater Vehicle

Research Platform with Unique Six Degrees of Freedom Control Capabilities
Autonomous underwater vehicles are becoming more and more common in the maritime industry, and technology is rapidly developing for different applications, such as inspection, maintenance and surveillance. Meanwhile, more advanced autonomous capabilities are required, to be able to perform complex tasks and challenging missions. The Maritime Research Institute Netherlands (MARIN) has designed and built a modular Autonomous Underwater Vehicle (mAUV) for research projects in its model basins. The objective of this research effort is to expand the knowledge of vehicle control and to gain a better understanding of autonomous underwater operations. MARIN has a lot of previous experience with dynamic... (read more)
2020-10-30 08:56:05

State of the Art in Multibeam Echosounders

The Evolution of a Bathymetric Workhorse
Although the single beam echosounder is still in use, it has over the last 25 years gradually been replaced with new and less expensive multibeam echosounder (MBES) systems. And, although some side-scan sonar (SSS) systems also offer bathymetry, the MBES is the go-to system when it comes to bathymetry today. MBES technology has gone through an evolution rather than a revolution in recent years. In this article, we focus on the current state of the art for this bathymetric workhorse. The Multibeam Echosounder The main function of an MBES is to detect a number of depths along a swath of... (read more)
2020-10-30 08:32:19

Automatic Calibration for MBES Offsets

A New Way to Monitor Your Data
Currently, calibration of multibeam echosounders (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... (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
Search Filter