The Future of ECDIS

After a gap of five years, the 2nd ECDIS Conference took place in Singapore in October 2003. At first glance everything was as before: the venue of the conference, its organisers, the lecturers and companies involved, and Ð strangely enough Ð even many of the titles of the presentations. But the most important item had changed and this was the mood in which the topic was presented. Five years ago almost everybody agreed that we were about to see a great breakthrough in the ambitious IMO/IHO ECDIS venture. This time, a gloomy mood of resignation and frustration seems to have... (read more)
2008-01-01 01:00:00

3D Web-mapping

Integrating Marine Data into Google Earth
Google Earth has become a popular 3D web-mapping viewer, mainly due to the richness of satellite imagery in its primary database. However, the database contains very limited marine data. While the addition of marine data would be welcome, this article explores the use of Web Map Service (WMS) and Keyhole Markup Language (KML) to overlay large-scale multi-beam imagery datasets from the Irish National Seabed Survey into the Google Earth viewer. Over the last seven years the Irish National Seabed Survey (INSS) has returned many terabytes of multi-beam sonar and ancillary data, providing detailed bathymetry data and knowledge of seabed characteristics.... (read more)
2008-01-01 01:00:00

Mapping the Floor of Upper Loch Linnhe Using AUVs

Due to their particularly shallow and turbulent thermocline, conducting seafloor mapping in lochs, fjords and other estuaries always presents a unique challenge to the hydrographic surveyor. Surface vessels often struggle to obtain accurate measurements due to the highly variable impedance of an estuary’s mixing layer, which causes frequent and significant changes in the salinity (and, by extension, density and temperature) of the brackish water. These rapid changes in the sound velocity of the mixing layer introduce a refraction error as sonar travels through the medium, and this error is extremely difficult to account for. This effect is especially prominent in... (read more)
2015-01-29 03:16:23

Qatar Petroleum

The single buoy mooring (SBM) digital radio shutdown system is the latest ‘state-of-the-art’ digital radio communication system/network, consisting of a fixed radio base station installation at Halul Island (State of Qatar). It operates with a mix of handheld, mobile and fixed mobile radio units provided to authorised personnel for the berthing of oil tankers prior to oil loading operations at SBM-1 and SBM-2 buoys.<P> The main purpose of thissystem is two-way reliable voice communication. A second purpose is to enable authorised personnel to remotely shutdown the turbine oil pump facilities for safety reasons, should an emergency occur during oil loading... (read more)
2008-04-02 12:00:00

Geophysical Surveys in West Africa

Detailed marine geophysical surveys are considered a key element in the process of development and construction of new offshore ports and load-out facilities. Specifically, seismic data constitute an essential part as they can reveal many unknown factors. Due to the challenging environment in West Africa and the often very shallow water depths, it requires a flexible and versatile approach from a survey company. This article gives an overview of how this type of project is approached and some of the lessons we have learnt when performing marine geophysical surveys in shallow water in West Africa.<P> West Africa is rich inmineral... (read more)
2009-01-05 12:00:00

Inevitable Truths of Operating AUVs

A Manufacturer’s Perspective on Routine AUV Utilisation
Earlier this year, the US Navy deployed a Bluefin-21 Autonomous Underwater Vehicle (AUV) to search for the missing Malaysia Airlines Flight 370. The tragic disappearance was thought to have occurred over 1,600 kilometres offshore Perth in a remote and very deep region of the Indian Ocean. The AUV was launched 25 times in order to collect over 850 square kilometres of seafloor imagery (Figure 1). As a result, authorities successfully discounted the area as the final resting place of those on board. On-going media coverage offered a glimpse into what AUV operations are really like day-to-day, dive-to-dive. But deploying an... (read more)
2014-12-15 01:55:48

IHO S-100

IHO Publication 57 (IHO S-57) is the official IHO Transfer Standard for Digital Hydrographic Data, formally adopted in 1992. S-57 was intended to support all types of hydrographic data, the associated technology and different user groups, but adoption has been relatively limited. S-57 has been used almost exclusively for encoding electronic navigational charts (ENCs) for use in electronic chart display and information systems (ECDIS). One of the reasons for this is that S-57 is not a contemporary standard that is widely accepted in the GIS domain.<P> To address this, the IHO hasembarked on the development of a new, more versatile... (read more)
2008-05-15 12:00:00

The Order of Canada

Interview with Mike Eaton, CHS Hydrographer and Mariner (Rtd)
There were three major overlapping phases in Mike Eaton’s career: Arctic developments in the Canadian Hydrographic Service, positioning systems development while at the Bedford Institute and electronic chart development after his retirement. In the Arctic he found ways to acoustically measure the depth beneath the ice and developed a rather hairy towfish sounding method from a helicopter in open waters. At the Bedford Institute he worked with Paul Brunavs and Dave Gray on the propagation of the radio ground waves used by Decca, Loran-C etc. Later he became deeply involved in the initial specifications of the electronic chart, and was... (read more)
2008-01-01 01:00:00

KM3NeT Future Deep-sea Research Facility

Building a Cubic Kilometre Neutrino Telescope in the Deep Mediterranean Sea
KM3NeT is a future deep-sea research facility that will be built at depths between 2.5 and 5km in the Mediterranean Sea. The facility will host several hundreds of detection units, which are vertical mechanical structures that suspend very sensitive optical sensor modules. For this design, novel deployment methods were recently tested in the Ionian Sea (Eastern Mediterranean Sea). Eventually, some 10,000 optical modules distributed over about 600 detection units of 700m length and moored 100m apart will constitute a neutrino telescope (NeT) that occupies several cubic kilometres (km3). The array will also be used for unique oceanographic observations. All matter... (read more)
2013-12-04 04:25:44

30 Years of Success

Hydro International Interviews Salem E. Masry
Dr Salem E. Masry, president and chief executive officer of CARIS, accepted to be interviewed by Hydro international on the occasion of the 30th anniversary of his enterprise. Dr Masry, a cake was cut on the occasion of the 30th anniversary of CARIS in its booth during the 4th Extraordinary International Hydrographic Conference in Monaco last June. Can you tell the readers a little about your career and how you had the idea of creating an enterprise that helps hydrographic institutions to manage the data they collect? My interest and work in hydrography started around 1976 when I was working... (read more)
2009-10-05 10:12:48
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