Oceanology International 2010 Preview (1)

Oceanology International, the world's premier event for the marine science and ocean technology community, will this year be held in London, UK, from 9th to 11th March. Over 6,600 attendees are expected to drop in on this event, visiting the world largest exhibition with over 500 suppliers, the associated biennial conference, or are attracted by the many vessels and networking opportunities. This preview aims to give a foretaste of this year's exhibition that is the largest ever held, with pavilions from Canada, France, Germany, Ireland, The Netherlands and individual exhibitors from nearly 30 countries. We invited exhibitors to introduce themselves... (read more)
2010-03-01 04:45:38

1997-2007: A Decade of Developments in Hydrography

We all know what is the oldest profession in the world. The second oldest is probably that of land surveyor: Adam undoubtedly wanted to stake out the boundaries of paradise in order to know what was and was not his. Paradise, or the Garden of Eden, was to be found in the land of the Euphrates and Tigris, where these two rivers converge at the town of Qurna in the present Shatt al Arab. And apart from his topographical activities Adam must also have made some hydrographic observations, probably just using a stick cut from a local fruit tree! After... (read more)
2007-02-02 12:00:00

RTK River Bathymetry in Africa

From Syledis and Tide Gauge to RTK GPS Water-level Corrected Survey
This article describes the installation of a hardware and software system for bathymetric surveys in the maritime part of the Congo River. The ‘Regie des Voies Maritimes’ (RVM) is a Congolese public administration in charge of an operational navigation river lane in the Congo maritime reach. The Congo River has the second lar­gest flow in the world and is 4,700km long. RVM maintains the conditions for commercial navigation in the so-called ‘maritime area’, from the mouth to Matadi harbour, over a distance of 150km. The estuary is the only maritime border of the Democratic Republic of the Congo (DRC), with... (read more)
2007-11-27 12:00:00

Resuming New-Zealand Charting After World War II

By an Old Hydrographer
After World War II, ship owners pressured the New Zealand Government to resume charting of coastal waters by the Royal Navy. Ships were now larger and most charts were a hundred years old. The Government approached Britain, which declined but kindly offered assistance to set up a new hydrographic service. The New Zealand Government and the Navy Board agreed that surveys must be resumed and that the Navy should undertake them. Here there were competent officers to train as hydrographic surveyors, a disciplined organisation and a large enough crew to be able to handle the ship, six boats and two... (read more)
2008-01-01 01:00:00

Silt Density Measurements in IJmuiden

How a nautical depth chart is produced
IJmuiden (The Netherlands) is sometimes called "the gateway to Amsterdam". IJmuiden also accommodates a large fishing harbour and the Corus steel factory. Due to tidal currents and the shape of the breakwaters, continuous sedimentation of silt occurs in the waterway between breakwaters. The local waterway authority (the North Sea Canal Department, Dienstkring Noordzeekanaal) uses Nautical Depth Charts to supervise the contractor that carries out maintenance dredging. These charts are also sent to the pilot service to ensure the safe passage of deep draught vessels. To guarantee a detailed description of the most recent situation, every two weeks the Survey Department... (read more)
2008-01-01 01:00:00

Old Soldiers Never Die

Interview with Brian Apsey, President of ODOM Hydrographic Systems Inc.
Some people in the hydrographic community show up in every part of the world and it looks like they never age and stop working. Nevertheless they sooner or later reach the moment of retirement. Do they clearly leave the scene or do they fade away? Such a person is Brian Apsey, President of ODOM Hydrographic Systems Inc. In March this year he celebrated his retirement, but will still be active for the company. Hydro international interviewed him to look back on a fascinating career and to hear of his plans for the future. You are an Electronic Engineer by profession.... (read more)
2008-01-01 01:00:00

GEBCO: the Second Century

Looking towards a general bathymetric chart
The General Bathymetric Chart of the Oceans (GEBCO), the archetype of Ocean Mapping at a world-ocean scale, celebrated its centenary last year with the release of an updated and greatly enhanced Digital Atlas. This CD contains gridded soundings and contours, the culmination of one hundred years of successful blending of hydrography and oceanography. This reflects the creative co-operation of both organisations such as the International Hydrographic Organisation and Intergovernmental Oceanographic Commission and those working side by side at individual level: hydrographers, geologists and geophysicists each contributing their different skills. This major accomplishment also represents the first step into the next... (read more)
2008-01-01 01:00:00

Hydrographic Surveys at the Port of Sines

The Hydrographic Institute of Portugal (HIP) has been executing hydrographic surveys at the port of Sines since 1973 as part of successive contracts signed with the Port of Sines Authority. Surveying at Sines as been made mainly for port engineering planning, construction and monitoring purposes. "Sines was chosen as the site for the construction of a national deep-water harbour in the early 1970s in response to the increasing trend worldwide towards very large vessels. The Port of Sines began operating in 1978 and its location is 58 nautical miles south of Lisbon. It is one of the few deep-water ports... (read more)
2008-01-01 01:00:00

We Get ENCs… and Now What?

A historic perspective of nautical charts production in Chile over recent years is given here. The experience of the Chilean Navy’s Hydrographic and Oceanographic Service may serve other Offices encountering similar problems and perspectives in facing the new challenges of modern hydrography. In 1994 SHOA celebrated its 120th anniversary and its Director defined as one of the main goals of the organisation the development of electronic charting capabilities (1). Since 1995, the transition from paper to electronic nautical charts production has followed the steps given below: 1995: A financial calendar was approved towards realising the first Chilean S-57 ENC. 1996:... (read more)
2008-01-01 01:00:00

The History of Pursuing Hydrographic Measurement Accuracy

The profession of hydrographer is built upon measurement accuracy. Ever since Lucas Janszoon Waghenaer produced the first true nautical charts in 1584, hydrographers have been working to improve the accuracy of their measurements. For anyone fortunate enough to have reviewed Waghenaer’s atlas, the 'Spieghel der Zeevaert' (The Mariner’s Mirror), one of the first questions that comes to mind is how accurate are these charts? As the technology of the times was crude at best, it would be difficult to evaluate his charts by modern standards. However, two soundings stand out as indicative of both the relative accuracy of his data... (read more)
2017-12-05 01:46:16
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