Focus Stories

Every month we will focus on a specific theme, featuring a selection of articles which have previously been published in the Hydro International magazine. By including a mix of older and more recent articles, we will present a complete recap of the subject. Furthermore, we are bringing you a bi-weekly round-up of ‘Focus Stories’ related to the theme through our newsletter (sign up here). The theme for December 2017 is:

Multibeam Echosounders

Must Read

Multibeam Data Processing

This article is about the evolution of acoustic sounders imposed on Hydrographic Service’s new methodologies for the interpretation, handling and application of hydrographic information. Considering spatial resolution and high-density data acquired by multibeam echosou... (read more)

Increased-resolution Bathymetry in the Southeast Indian Ocean

The disappearance of Malaysian Airlines flight MH370 on 8 March 2014 led to a deep ocean search effort of unprecedented scale and detail in the remote southeastern Indian Ocean. Between June 2014 and January 2017, two mapping phases took place: (1) a shipborne bathymetric su... (read more)

Developments and Trends in Multibeam Echo Sounders

The multibeam echo sounders available on the market are constantly evolving as technology advances and as sonar producers seek new ways of refining and utilising the products. In this article we will provide a snapshot of current products and trends from the dominant (high-e... (read more)



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Multibeam Echosounders

Marine Asset Integrity Mapping

Advances in marine & terrestrial scanning survey techniques together with precise inertial navigation sensors, multi-sensor acquisition systems and cost-effective UAS photogrammetry allow hydrographic surveyors to undertake high-precision marine asset integrity mapping.... (read more)

High-resolution Structural Inspection of a Flooded Tunnel

Acquiring accurate data on the structural integrity of submerged tunnels, as well as shafts and underwater caverns, has long been a challenging and costly problem for water companies, hydroelectric schemes and mine operators alike. While dewatering of tunnels is one option t... (read more)

Developing the Ocean ­Survey Workforce

Developing qualified ocean surveyors for the marine geospatial workforce requires an educational opportunity that goes well beyond the limitation of classroom and laboratory exercises. The BEAMS Programme focuses on strengthening technical and applied skills in the next... (read more)

When is it Advantageous to Maximise Swath Width?

Production seafloor surveys for hydrography require careful planning, balancing many factors for operational efficiency. Requirements for meeting International Hydrographic Organization (IHO) standards for horizontal and vertical uncertainty and object detection must be met,... (read more)

Multibeam Systems for Extreme Environments

The search for resources and energy reserves for the future is continuously increasing in the polar region. More and more states are trying to stake their claims and to register their rights. For the same reasons, the clarification of the exact borders of the continental loo... (read more)

Opportunistic Multibeam Surveying

Currently only ten to fifteen percent of the ocean floor has been mapped at resolutions of 100-metre pixel size or better and the vast majority of this mapped area is within territorial waters. One way to significantly increase seafloor coverage is to outsource data collecti... (read more)

Bering Sea ASV Force Multiplier

TerraSond, a hydrographic services company based in Palmer, Alaska (USA), used a C-Worker 5 (CW5) unmanned autonomous surface vessel (ASV) in conjunction with a 105’ (32m) research vessel from June through August 2016 on a major hydrographic survey in the Bering Sea re... (read more)

Getting to the Bottom of Our Ocean

Two-thirds of our planet surface is covered by water and yet what lies underneath is a mystery to us. We know the ocean controls our weather and climate and is home to an estimated half of all species on Earth. However, 95% of the ocean still remains unexplored. We have high... (read more)

Teaming up for Multibeam Echo Sounder and Sonar Solutions

Teledyne Marine Acoustic Imaging Group is part of Teledyne Marine and is a provider of advanced multibeam echo sounder and sonar solutions servicing a variety of markets and applications. Single-beam echo sounders and entry level multibeam echo sounder systems are manufactur... (read more)

Very Shallow Water Survey - A New Approach

Hydrographic surveys in very shallow waters can have several applications such as nautical chart updating, performing environmental monitoring and characterisation, determination of dredged volumes, establishing navigational channels or defining general coastlines. When full... (read more)
Multibeam Echosounders

UAS at the Beach

The North Sea Canal connects the Port of Amsterdam with the sea. The two breakwaters at the mouth of the harbour in IJmuiden, The Netherlands, are usually monitored on displacement of basalt block by airborne Lidar and on subsidence by annual levelling of permanent points. C... (read more)

Next-generation Surveyors Using Next-generation Technology

Twenty 3rd-year students of ocean technology from the Maritime Institute Willem Barentsz (MIWB, The Netherlands) participated in the 4th edition of the Lake Survey. Building on last year’s experience and together with three new partners, Teledyne CARIS and Fugro w... (read more)

What About the Other 88%?

Despite the last decade’s flurry of UNCLOS ECS mapping, the amount of the oceans surveyed remains around 12%. The continuing search for the MH370 wreckage emphasises our scant knowledge of the actual deep ocean seafloor despite the apparently detailed overall picture d... (read more)

INIS Hydro Seabed Mapping Project

Since January 2011, an ambitious EU-funded seabed mapping project has been surveying and charting 7 key marine areas off the Republic of Ireland, Northern Ireland and the west coast of Scotland. Their mission? To harmonise and integrate cross-border baseline marine data coll... (read more)

On the Cusp of A New Hydrographic Era

I became director of NOAA’s Office of Coast Survey in late August, and I feel incredibly lucky to be able to take the helm at this dynamic time in hydrographic history. We are on the cusp of a new era in hydrography. I am, like most field hydrographers, very excited by... (read more)

More than the Common Dataset

The biennial event Shallow Survey was held in Plymouth, UK, from 14-18 September 2015. The Roland Levinsky building of the university hosted the conference, welcoming over 300 delegates. The trade show with  45 stands was spread over three floors. In addition to the pap... (read more)

Port of Rotterdam – Innovative Hydrography

The Port of Rotterdam is a leading global port and by far the largest seaport in Europe. The port is situated in the Rhine delta and with its direct connection to Europe’s largest industrial region, the Ruhr area, it is a key entry point to the European market. Underst... (read more)

Rapidly Identifying Patterns and Problems in Multibeam Datasets

The Naval Oceanographic Office (NAVOCEANO) utilises a diverse suite of survey assets to collect high-resolution oceanographic and hydrographic data in shallow-water areas all over the globe. These assets maintain a high operation tempo, resulting in extremely large data volu... (read more)

Flying, Landing and then… Surveying

Remote, difficult to access: it just depends on the point of view. Often, trying to reach some areas with a classical survey vessel or with an opportunity launch is like banging our heads against a brick wall, but it appears to be quite easy to land there with a seaplane. Th... (read more)

The Art of Bathymetry

Great advancements have been made in three dimensional printing over the last few years and have made an impressionable impact across a variety of industries. 3D printings’ versatility can be incorporated into any industry that has some form of three dimensional design... (read more)
ASV Global C-Enduro

ASV Global C-Enduro

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