Svitzer Ltd

With 13 years of acoustic inspections behind them (the last nine utilising the Focus 400 ROTV), Svitzer has, arguably, become a leader in ROTV pipeline inspections. With a highly skilled team of operators and data analysts at hand, Svitzer has the ability to carry out high resolution acoustic inspections and surveys with the Focus 400 ROTV anywhere in the world. Svitzer has been involved in the inspection of pipeline systems using side-scan sonar since 1989, when the company first carried out the inspection of Shell UK Expro’s southern North Sea pipeline system. Since 1993, the company has been operating Focus... (read more)
2008-01-01 01:00:00

Survey Vessel Acadia

By an Old Hydrographer
On July 5th 2003 the Maritime Museum of the Atlantic, the Canadian Hydrographic Service and former officers, staff and crew of the CSS Acadia, gathered in Halifax, Nova Scotia, to celebrate her 90th birthday. The Acadia was the pride of the Canadian Hydrographic Service fleet for many decades. Now, as the museum’s largest artefact, she draws considerable attention, respect and admiration from those who appreciate fine vessels. The Canadian Survey Ship (CSS) Acadia was designed and built for hydrographic surveys by Swan, Hunter and Wigham Richardson Ltd. at Newcastle-upon-Tyne, England. She arrived in Halifax, Nova Scotia, on July 8th 1913... (read more)
2008-01-01 01:00:00

International Communications and Navigation Ltd

International Communications and Navigation Ltd (ICAN) is a product development and systems integration company incorporated in 1996. The company has its headquarters in St John’s, Canada with offices in Quebec City, Canada and Dallas in the US. ICAN was initially conceived as a systems integration company that focused on differential GPS infrastructure. This changed in 1997 as ICAN became involved in shipboard projects and started developing electronic charting technology. The company focused from the beginning on delivering systems that provided utility to the customer. Navigation is an essential utility provided by electronic charting systems, but there are many other aspects... (read more)
2008-01-01 01:00:00

Securing Offshore Oil and Gas Infrastructure with USVs

Employing commercial-off-the-shelf USVs that can be rapidly reconfigured with a diverse range of sensors can enhance the ability to deliver energy to America and the world. This is a win-win for the energy industry, says George Caldorisi when he describes the securing of oil and gas infrastructure with Unmanned Surface Vehicles. While the exigencies of climate change have led to major strides in the development and deployment of renewable energy sources such as solar, wind and others, the world’s energy needs will continue to be met primarily by oil and natural gas for the foreseeable future. As readers of Hydro International are well aware, the strategic implications of the United States’ transition from energy dependence to energy independence to becoming a net oil and gas exporter are being felt worldwide. While some saw this sea change coming, most did not, and the community of nations is still coming to grips with... (read more)
2020-04-06 09:50:21

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

A Triptych on Standards of Competence

The current status of hydrography is relatively new and one of the consequences is an ongoing search for appropriate standards of competence for personnel involved. It is not possible to lay down a single uniform set of standards as a strong relationship exists between standards and type/nature of activity. Hydro international interviewed three representatives of segments within hydrography, each with a differing approach to standards of competence. These views cover general hydrographic education, training and experience of offshore contract personnel and the outlook of a company providing such personnel. Svante Astermo, FIG/IHO/ICA Advisory Board on Standards of Competence for Hydrographic... (read more)
2008-01-01 01:00:00

Different Approach to Surveying Antarctica

Operation Rock Bottom
Navigation data is poorly available in Antarctica. If navigational data is available it often dates back to the early 1900s with many lead line surveys. An initiative was undertaken by Stephen Wilkins of Xplore Expeditions to collect bathymetry with a multi-beam survey system making use of the sailing vessel Xplore. Together with Yoann Boulaire from SHOM, France and Fernando Landeta, hydrographic technician from Skyring Marine Chile, an IHO qualified survey was performed in Antarctica on an expedition sailing yacht. As all mariners navigating in Antarctica know , one must use a combination of all available means to enable safe travel... (read more)
2013-05-22 04:59:22

Satellite Observations to Retrieve Tidal Sea Level and Tidal Currents

Prediction of tides is important for many things, including safe navigation, coastal engineering and surveying. To determine tidal constituents, a sea level time series from a tide gauge can be used. Satellite altimeters are able to measure sea level differences. These measurements have been used to describe the large-scale tides in the open ocean. This article describes a technique for obtaining tidal information in coastal areas by combining satellite data with in situ measurements.<P> Tides are responsible for a large part of the movement of water in oceans and seas. The ability to predict tides is important not only for... (read more)
2008-04-02 12:00:00

GIB Portable Tracking Systems

The underwater use of GPS
Why has a new positioning system been designed? What are the requirements? What are the drawbacks of traditional solutions? Why are a new concept and system architecture necessary? What applications are addressed? What performances can be achieved? In the field of underwater positioning, many solutions exist and people are often satisfied with the traditional solutions they are used to. LBL and USBL are widely used for underwater positioning in various applications, though they present some installation and calibration constraints and operational limitations. Their performance can be over estimated and in some cases are not justified. If you push surveyors towards... (read more)
2008-01-01 01:00:00

Invited Reply

Hydrography or Hydrogeomatics?
In common with all sciences, hydrography too is undergoing rapid change with regard to data acquisition and processing, instrumentation, application and many other aspects. Differing ideas may be found within the hydrographic community concerning these developments, which direction to take, change in the nature of the science, etc. and some opinions are to some extent controversial. Hydro international would like to draw attention to such diverse opinions when and in whatever context they arise by modifying her traditional interview in this issue by a column entitled ‘Invited Reply’. The pertinent question will here be answered by six prominent figures from... (read more)
2008-01-01 01:00:00
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