Surveying the Thames Tunnel Route

The Thames is Liquid History
Following the suspension of Parliament in the summer of 1858 due to the ‘Great Stink’, an act was passed to allow construction of a network of giant sewers, pumping stations and treatment works beneath London. The system was designed by Sir Joseph Bazalgette and took both sewage and rainwater together. After heavy rainfall, when the flows were greater than the sewers could take, the excess was discharged into the Thames through one of 57 combined sewer overflows (CSOs). After more than 150 years of service, the Victorian system is struggling to cope with the demands of modern London. The population... (read more)
2012-06-06 03:46:08

Challenges Ahead for Offshore Surveying

As the offshore oil and gas industry moves into remoter areas and deeper water, the importance of the surveyor knowing accurately the precise position of a piece of work becomes more and more difficult, yet increasingly critical.The International Marine Contractors Association (IMCA) – Stand 137 at Ocean Business - has warned that a serious skills shortage is hitting the market. The industry is currently thriving in an extremely positive atmosphere, and can look forward to its workload remaining at a very high level for many years to come. Many companies are experiencing significant challenges in recruiting sufficient trained and skilled... (read more)
2007-03-28 12:00:00

TeamSurv - Surveying with the Crowd

The Application of Crowdsourcing to Hydrographic Surveying
Modern multi-beam survey techniques offer unprecedented levels of accuracy, but there are many areas where a multi-beam survey is not available or cannot be justified. TeamSurv uses crowdsourcing to offer an alternative approach for these situations. As any reader of Hydro International will know, modern multi-beam survey methods are several orders of magnitude better in accuracy and coverage compared to even just 30 years ago. But it is also expensive, and the resources may not be available. TeamSurv brings crowdsourcing to surveying, gathering data from vessels as they go about their normal activities, using their standard instruments. It is developing... (read more)
2011-07-15 03:39:11

Tide Models for Hydrographic Surveying

Computer models replace tide poles
Hydrographic surveying has become a highly sophisticated operation, with GPS for accurate fixing of position, acoustic technology for mapping the sea-bed either side of the survey vessel, and on-board computer systems to automatically process the data. But the corrections made for tide are in many cases still done using methods that date back to Captain Cook's days in the late 18th century. These methods may be adequate for places where the tide does not change much from place to place, or if the tidal range is small. But in places where the tide varies widely, the accuracy of tidal corrections... (read more)
2008-01-01 01:00:00

Surveying the Gulf of Mexico

Surveying and mapping for the offshore petroleum industry in the Gulf of Mexico (GOM) has been a source of confusion and wonder, especially to non-US nationals working there for the first time. This article aims to clarify some of the more confusing aspects of the system of area/blocks, coordinates and government-agency regulations associated with this working environment. The Mineral Management Service is the primary federal government regulatory agency involved in offshore construction and lease permits for pipelines and structures. Other government agencies may be involved, such as the Department of Transportation, depending on the circumstances. This article mainly refers to... (read more)
2007-09-04 12:00:00

HYPACK 2009 Hydrographic Surveying Training

The 16th HYPACK 2009 Training Conference will be held from 12 to 14 January 2009 at the San Diego Marriott Hotel and Marina in San Diego (CA, USA) overlooking the San Diego Bay. The training will cover all aspects of single beam and multibeam hydrographic surveying and dredge management using HYPACK, HYSWEEP and DREDGEPACK packages. Some of the features that will be demonstrated are export to Google Earth, Improved OpenGL graphics, new sonar interfaces, New SURVEY window, and new ADCP logging and processing capabilities.   Thirty-four exhibitors from software/hardware manufacturers, equipment resellers and service providers will feature in the exhibit... (read more)
2008-12-04 03:57:28

NOAA Hydrographic Surveying Services Contracts

NOAA has awarded new five-year contracts to eight private hydrographic survey companies for projects throughout U.S. coastal waters. Under the new contracts, which cannot exceed USD250 million in total, over the five-year period, the companies will provide critical hydrographic data for updating NOAA's nautical charts. Over the course of the next five years, the companies may be assigned survey projects anywhere on U.S. coasts, from the Arctic's Bering Sea to the Florida Keys, from the Atlantic coast to our western shores. The eight firms awarded contracts are: C&C Technologies, located in Lafayette, Louisiana David Evans and Associates, located in Vancouver,... (read more)
2014-06-30 12:00:00

Fugro Academy’s Thousandth Surveying Course

At the end of June 2012, Fugro Academy, based in Aberdeen, UK, delivered its 1,000th surveying course. Fugro Academy has been providing survey training since its creation in 2006. In that time, over 7,600 staff have been trained in their profession, which is the equivalent of around 35,000 days of training. Survey training courses are developed to support the training and development of Fugro’s surveyors, engineers, geophysicists and data processors. Training starts with basic induction to and familiarisation with the company and offshore survey operations, leading to technical courses in systems and processes used by Fugro, through to supervisory and... (read more)
2012-08-10 10:44:06

Offshore Surveying Awareness Seminar 2003

The Offshore Surveying Awareness Seminar 2003 (OSAS 2003) was held at the Federal Hotel at Jalan Bukit Bintang, Kuala Lumpur, Malaysia on 24 and 25 April 2003. This seminar was the first of its kind to be organised by the Land Surveying Division of The Institution of Surveyors Malaysia (ISM). About one hundred excited participants attended this seminar. In fact, ISM had been somewhat sceptical about this seminar idea, mainly due to the fact that there are very few members who are hydrographic surveyors and hydrographers and most of these are not active within the ISM. However, with sheer hard... (read more)
2008-01-01 01:00:00

Surveying a Greek Underwater Archaeological Site

Researchers from Plymouth University (UK) recently conducted a marine geoarchaeological survey off Methoni, Greece. The survey results from the sidescan survey presented digital sonograph records and georeferenced mosaics of the submerged prehistoric settlement ruins, the ancient harbour and its submerged breakwater, as well as records of historic shipwrecks, cannons and artefacts over the site. A Kongsberg GeoAcoustics dual-frequency sidescan sonar and the GeoPulse Pinger sub-bottom profiler were used for visualisation of underwater antiquities over the local underwater archaeological site, within the GE.N.ESIS project.  The results from the shallow seismic survey highlight profiles of semi-buried historic shipwrecks, numerous sub-seabed features of... (read more)
2013-12-16 02:43:55
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