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

Hydrographic Surveying in Greenland Waters

The Hydrographic Survey (Søopmålingen) which is a part of the Oceanographic division within the Royal Danish Administration of Navigation and Hydrography (RADON), conducts hydrographic surveying in the Danish and Greenland waters. This article will focus on operations in Greenland waters. Hydrographic surveying in Greenland can be dated back to 1605. Until the 19th century existing charts were made from data gathered by civilian as well as navy vessels. At the end of the 19th century the Danish Government started considering how Greenland could be charted in a more systematic way. The Charting of Greenland Waters A scientific expedition was commissioned... (read more)
2008-01-01 01:00:00

Flying, Landing and then… Surveying

Seaplane Bathymetric Platform for Remote Area Operations
Remote, difficult to access: it just depends on the point of view. Often, trying to reach some areas with a classical survey vessel or with an opportunity launch is like banging our heads against a brick wall, but it appears to be quite easy to land there with a seaplane. Here is the premise for the Seaplane Bathymetric Platform Project, which aims to integrate bathymetric survey instruments into an existing seaplane to conduct hydrographic surveys in remote and difficult to access survey areas. Maritime navigation development in Canada’s Northern Waters is highly impacted by the lack of nautical charts meeting... (read more)
2015-07-28 01:51:26

Data Integration for Coastal Surveying

Combining Laser Scanner and Bathymetric Sensor
When surveying the coastline, the integration of bathymetric (below sea level) and laser scanning (above sea level) data causes problems due to the different imaging properties. However, by ensuring that the different data sets have been accurately georeferenced and oriented, a complete and accurate model of the terrain above and below sea level can be obtained. This technique was employed to survey the area of Portovenere in Italy, including the San Pietro church located on a steeply sloping rocky promontory, with positional accuracies in the order of 5cm.<P> View Larger Map One of the biggest issues incoastline survey is the... (read more)
2009-06-04 12:00:00

CMS-Geotech Surveying for Galloper Project

Lowestoft-based multipurpose vessel MV FlatHolm finished off a busy year in 2016 with a successful charter to James Fisher Marine Services, undertaking a variety of service activities in connection with the Galloper Offshore Wind Farm during November and December. The Galloper project was busy, last year, with turbine foundation preparation and MV FlatHolm provided daily cover, making sure the site was clear and checking for hazards and obstructions which might have hindered operations with the scour protection rock placement work. Being based in Lowestoft, UK, MV FlatHolm was able to be on standby for any situation which might require immediate deployment, offering... (read more)
2017-02-14 02:04:28
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