The Impact of the Physical Properties of Water in Dam Lakes

In Accordance with the Results of the Echo Sounding and Reservoir Capacities
Technical managers and users of hydrographic surveying results of reservoir dams mainly pursue the amount of sedimentation and the authentic volume of the reservoir under their management. But to what extent is the data obtained reliable? It would appear that the following factors could be effective in gaining this objective: Technical, modern and updated hydrographic guidelines, Advanced equipment and their appropriate application,Timely calibration during equipping and the elimination of systematic errors,Qualified, experienced, trained and specialised manpower, The application of methodology, according to the hydrographic guidelines of the reservoir,Correct data processing, including the enforcement of the essential amendments and the rendering of the... (read more)
2010-09-13 02:06:26

The Importance of Continuous Education

How Fugro Academy Advances the Company’s Business
It is now well over ten years since Fugro Academy opened its doors within Fugro as a focal point for learning and development for the company’s 10,000-plus employees, who specialise in providing geoinformation and asset integrity services to a global client base. So, what is Fugro Academy and how does it contribute to the ongoing education and professional development of the largely technical workforce? Andrew McNeill, global talent development manager at Fugro, explains more. Fugro Academy was established in late 2006. Around that time, Fugro was working in a very buoyant market, particularly for services related to oil and gas,... (read more)
2018-02-14 10:27:53

A Farewell to Times Past

HI Interviews Admiral Steve Ritchie, Columnist ‘As it Was’
We have all enjoyed the column entitled ‘As it Was’, contributed since the very first issue of Hydro international by Admiral Steve Ritchie. The piece has always been very much appreciated and we have received many positive reactions to it. Steve’s lifetime has encompassed the technical revolution in hydrography; it is seventy years since he entered the surveying service and forty since he became UK Hydrographer. So that in terms of memory alone he was the perfect man to carry the ‘As it Was’ column. But he also had a reputation as author of some interesting publications, including his books... (read more)
2007-03-02 12:00:00

3D Sonar in Object Detection

Intuitive real-time imaging for sub-sea visualisation and classification
Sonar is well accepted as an option for detection and visualisation of underwater objects. Side-scan and sector-scanning sonar have traditionally been used by surveyors but whilst they produce excellent images, these are often difficult to interpret accurately. This article describes new developments in 3D-sonar and their advantages and use in emerging underwater disciplines. Classic applications for object-detection are many and varied, ranging from looking for items such as wreckage, debris, lost items and so forth to defence applications, seeking out threats such as mines. Increasingly, though, object detection has been expanded to include obstacle avoidance for both surface and submersible... (read more)
2008-01-01 01:00:00

Supply Hydrographic Personnel

Hydro INTERNATIONAL Interviews Johan Stam, Business Development Manager, Atlas Services Group
There is a global shortage of hydrographic surveyors. The industry is faced with an interesting challenge and looks to specialised education facilities and personnel suppliers to assist in solving this problem. Even in times of high unemployment it can be difficult to find sufficient skilled personnel to carry out hydrographic survey work in the offshore environment. Hydrographic educational institutions around the world are struggling to attract enough students, resulting in noticeable shortages of trainees within the survey departments of large and small survey contracting companies. Although working conditions have improved considerably over recent decades, the environment in which hydrographic surveyors... (read more)
2008-01-01 01:00:00

The Bering Sea Survey

Adapted from Article by E. W. Eickelberg, Hydrographic and Geodetic Engineer, Commanding, US Coast and Geodetic Survey Ship Guide
1939 marked the beginning of a concerted programme to chart the Bering Sea area. The surveys in this area that were conducted prior to United States entry into the Second World War marked some of the last that were done in frontier areas prior to the advent of the era before electronic navigation systems, shallow-water fathometers, and widespread  use of gyrocompasses, outboard motors, helicopters and other tools that eased the work of mid-to-late-twentieth century hydrographers. The Coast and Geodetic Survey Ship Guide, under the command of Commander Ernest Eickelberg,  was assigned the initial work associated with this endeavour and commenced... (read more)
2016-03-01 11:00:46

A New Beginning

ISO 9001-2000 for French Hydrographic Office
As pointed out by many preceding the French Hydrographic Office, SHOM, on the path of certification, the rapid growth of information systems and automation has often outpaced updating of procedures. This has resulted in a growing gap between what was being actually done and what was written on what was to be done. For organisations like SHOM, where safety and traceability are nearly sacred, this gap had to be filled. In addition, the systems used for surveys and for production ashore are growing in complexity and their quality has a direct impact on the quality of products, including integrity of... (read more)
2008-01-01 01:00:00

Rheology as a Survey Tool

“We Are Not There Yet”
To reduce the dredging cost many harbour authorities and governmental bodies are seeking for a more suitable and a rheology-related survey tool. The in situ instruments available on the market are based on mechanical, acoustical, optical or radioactive measuring principles. But before one will be able to map the real nautical bottom, we need to understand the influence of the mud properties (micro scale) on a vessel (macro scale). This article gives an overview of the general reaction forces of the mud which definitely play an important role in the vessel behaviour when sailing into it. Without naming any commercial... (read more)
2011-05-17 03:42:46

Lessons Learned From the AF447 Search

Hydro International Interviews Mike Purcell
It was a rainy day at Woods Hole, Massachusetts, USA. The scenery reminds me of the Twin Peaks atmosphere. I am about to interview Mike Purcell, the man whose search team finally found the wreckage of flight AF447 in the deep ocean in 2011. Only five years after this tragedy a second airliner, the MH370, vanished into the deep ocean. Major search operations have been going on since then. Hydro International found this to be a good reason to look back with Mike and see what lessons have been learned in this deep ocean search operation. When did WHOI get... (read more)
2015-01-29 03:25:33

100 Years of Service

This year marks the 100th Anniversary of the Commissioned Corps of the National Oceanic and Atmospheric Administration (NOAA Corps). The law forming the service was signed on 22 May 1917 and overnight made the field officers of the then United States Coast and Geodetic Survey uniformed commissioned officers. Literally hundreds of hydrographers, topographers and geodesists have since served in this uniformed service. As such, a look back at the origins and history of this organisation is in order. Many elements of the National Oceanic and Atmospheric Administration (NOAA) and its commissioned officer service are direct descendants of the US Coast... (read more)
2017-03-13 02:16:05
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