Hydrography in Monaco

160 Years of Partnership With France
France has been providing hydrographic services on behalf of Monaco for 160 years. This article describes this partnership from the early days of systematic surveying to the present state of affairs (including digital chart production).The long-lasting partnership was formalised in a bilateral arrangement in 2005. The event was called exemplary in the annual report of the International Hydrographic Organization (IHO) for 2005: on 19th September 2005, France and Monaco signed the first known bilateral arrangement formalising the provision of hydrographic services by one country on behalf of the other, in accordance with the revised Safety of Life at Sea (SOLAS)... (read more)
2007-04-04 12:00:00

The Importance of Hydrography Establishing the Outer Limit of the Continental Shelf

Commander Alexander Tagore Medeiros de Albuquerque (retd) of the Brazilian?Navy is one of the outstanding hydrographers of the Directorate of Hydrography and Navigation (DHN) of the Brazilian Navy. DHN tasks include the delimitation of the national continental shelf in accordance with UNCLOS. Brazil and its hydrographers have contributed to the text of the UNCLOS since its first draft. It therefore seems appropriate that a Brazilian hydrographer now chairs the Commission. Hydro international was able to interview Mr Albuquerque and it is hoped that the readers shall appreciate not only the importance of the task of the Commission but also the... (read more)
2009-01-05 12:00:00

Seamless Multibeam Data Analysis and Management

Seamless handling of large multibeam datasets
How to tackle problems traditionally associated with the management of multibeam data? A management tool has been developed which offers concrete operative solutions by eliminating lengthy manual editing stages and considering the entirety of survey swaths as a single dataset whilst maintaining control of each single sounding. The revolution created by the introduction of remote sensing in ways of perceiving, studying, interpreting, representing and operating in a land environment has been mirrored in the marine, river and lake environment by the introduction of multibeam soundings. There is an important difference between the two technologies: systematic checking on the grounds of... (read more)
2008-01-01 01:00:00

Low Cost or Cost Effective?

Managing cost through the fit for purpose principle
When asked to do an article on low cost hydrography within the offshore construction industry the first word that sprang to mind was 'cheap'. However 'cheap' might not be 'cost effective' which is, or at least is supposed to be, the decision driver. For a private Company to remain in business it is essential that any external service hired, provides value for money. Hence all survey services within the private sector can be considered 'lowest cost'. There is however another critical factor that shall be considered. If a service impacts on installation spread efficiency, it might be worthwhile to spend... (read more)
2008-01-01 01:00:00

Advances in High-speed Underwater Remote Vehicles for Subsea Pipeline Inspection

The Benefits and Challenges of the Technological Revolution in the Pipeline Survey Industry
The pipeline survey industry has undergone a technological revolution in the past couple of years, and the consequential benefits and challenges are only just beginning to be fully realized. The cost efficiency of subsea operations has been one of the key focus areas of the offshore energy industry in recent years. This focus, combined with increased growth in the amount of subsea infrastructure now in-situ on the seafloor, has seen a rising need for innovative approaches to subsea asset inspection. These solutions need to be cost-efficient, maintain data quality, and be able to provide a platform that supports future technologies.... (read more)
2019-04-02 10:25:26

Exploring the Deepest Points on Planet Earth

Report on The Five Deeps Expedition
As extreme explorer Victor Vescovo continues his round-the-world expedition to become the first person to descend to the five deepest points in the Earth’s five oceans using the custom-built deep submergence vehicle Limiting Factor, it prompts the question: ‘Do we know as much about the deepest places on our planet as we thought?’ As extreme explorer Victor Vescovo continues his round-the-world expedition to become the first person to descend to the five deepest points in the Earth’s five oceans using the custom-built deep submergence vehicle Limiting Factor, it prompts the question: ‘Do we know as much about the deepest places on our planet as we thought?’ Today, the best global maps of the oceans have a resolution of 30 arc-second grid cells (926m at the equator). Approximately 82% of the grid cells do not include a single depth measurement (Weatherall et al., 2015), and the percentage of the seafloor that has been directly... (read more)
2019-06-18 03:32:12

The Dutch Way of Measuring Depths

by an Old Hydrographer
Once upon a time there was no satnav, multibeam sonar or a computer to handle a survey system. Hydrographic surveying was done ‘by hand’ with instruments long forgotten, instruments which boasted accuracy which would nowadays make your hair stand on end. Which instruments? There is no general answer to this question, because the Hydrographic Services of different countries had their own specific ways and means. There follows an example of what was used by the Dutch around 1955 in the former Netherlands New Guinea. When beginning a triangulation supported by a baseline, the position of one of the ends of... (read more)
2008-01-01 01:00:00

21 Semi-finalist Teams Advancing in Shell Ocean Discovery XPRIZE

XPRIZE has announced the 21 teams representing 13 countries advancing in the USD7M Shell Ocean Discovery XPRIZE. This three-year global competition challenges teams to advance ocean technologies for rapid, unmanned and high-resolution ocean exploration and discovery. Their innovative approaches run the gamut: gliders and drones, underwater robotic swarms, autonomous underwater vehicles, robotics, artificial intelligence and massive computing platforms. From a 25-country field, a panel of independent expert judges chose the semi-finalist teams who will move forward into the first round of testing. Semi-finalist team leads hail from Canada, China, France, Germany, Ghana, India, Japan, New Zealand, Portugal, South Africa, Switzerland, the... (read more)
2017-02-16 04:50:14

We Visited for You

Oceanology International 2004
From 16-19 March, London’s new Exhibition Centre (ExCeL) was hosting the Oceanology International for the second time; offering ample, proficient and modern space in the Docklands, it saw a well organised show which attracted a record number of 7,000 participants, visitors and exhibitors. The conference committee was chaired by Prof Graham Shimmield (Director of the Scottish Association for Marine Science). He and his team did a great job in putting together a very interesting programme around the conference theme of ‘Strategies for Stewardship of our Oceans and Coastal Zone’. In his opening speech, MP Steven Timms, UK Minister for Energy,... (read more)
2008-01-01 01:00:00

Acoustic Classification by Sonar

Disparate approach successful in cost-effective mapping
A breakthrough in signal conditioning has lead to significant improvements in single-beam and swath classification. With modern computers, this allows cost-effective bottom classification across multiple sonar platforms. The common dataset generated as a result of the highly successful shallow-survey conferences sponsored by the University of New Hampshire Ocean Mapping Group and the Defence Scientific and Technical Organisation of Australia is an ideal proving ground for classifying the same seabed using multiple platforms. The results of processing and classifying a common dataset are presented in this article. Acoustic seabed classification is in wide use for applications from habitat mapping to mine... (read more)
2008-01-01 01:00:00
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