Focus: Articles

Case Study

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)
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“Hydrographically Developed Countries Should Reach Out to Developing Countries”

Oriental countries are dedicated to the hydrographic profession but don’t often beat the drums in order to be heard. There’s a lot of work... (read more)
Technology in Focus

A Comparison of Five Main Metrology Techniques in Use Today

Subsea metrology is the process of acquiring accurate measurements for the connection of subsea structures and pipelines. IMCA’s guidance covers the most commonly used t... (read more)
EdgeTech designs, manufactures, sells and supports underwater technology solutions.  The company has been serving the marine industry for over 50 years with commercial off-the-shelf and customised underwater systems.  EdgeTech sonar systems include side-scan sonar systems, sub-bottom profilers, bathymetry systems and combined and modular systems.  The solutions are available in a...
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Sea Vision

For most of my naval career, senior colleagues bemoaned the curse of sea blindness, a perception that increased in volume around the time of government reviews of defence and the inevitable scrutiny of naval budgets and resources. We thought ourselves to be ‘out of sight, out of mind’, w... (read more)
About Hydro International

Hydro International started out as a print magazine in 1996 and soon developed into a the multimedia platform it is today, featuring a successful website ( and respected weekly newsletter.

Cover Hydro International Magazine May June 2016Hydro International magazine is published eight times a year. The magazine is international in scope and focuses on bringing to its readership topical overviews and the latest news and developments in the technology and management of hydrographic activities.

Hydro International seeks and publishes the opinion of leading hydrographers on the state
of the market, technical issues and national and international policies.

Reader Profile
Hydro International goes straight to the desk of key decision-makers in the international hydrography arena and is directed at commercial, academic and government professionals all over the world, people at the leading edge of managing, implementing and procuring hydrographic equipment and services. Our audited readership is involved in a diverse range of activities involving hydrography.

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Cover Hydro International Magazine May June 2016

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