Decimetre-level Positioning System for Hydrographic Applications

Fugro has introduced a new service called Fugro High Performance (HP) with design goal of 0.2m 95 per cent horizontal and 0.3m 95 per cent vertical. Both monitoring data and field results are presented showing a performance well within these criteria. This new high accuracy service has expanded the applications for real-time DGNSS in both static and mobile environments. One such application is real-time tidal measurements through accurate height determination of an offshore survey vessel. In recent years various applications have emerged in offshore and land environments requiring decimetre accuracy real-time positioning. This level of accuracy has been either impossible... (read more)
2008-01-01 01:00:00

Snow Crab Tracking Using Wave Gliders

New Technology Bringing Science and Industry Together
Coastal communities around the globe are seeking better ways to understand and manage regional ecosystems. They depend on the ocean to sustain economic opportunities, ensure food security and safeguard fragile environments and species. For harvesters, scientists and government organisations in Nova Scotia, Canada, timely, accurate and comprehensive data on movements of valued species as crab is essential for designing effective fishery management regimes. Ocean Tracking Network (OTN), the Canadian government and local harvesters have been tagging and monitoring aquatic animals for years. But not all tracking methods are practical or cost-effective for highly mobile, yet slow moving animals like snow... (read more)
2017-06-19 01:57:59

Technology for Hydrographic Purposes

Interview with Erik Hammerstad, Kongsberg Maritime AS
Hardware (and to a lesser extent software) for the hydrographic survey industry is mostly developed by technical experts not educated as hydrographic surveyors. Nevertheless, manufacturers have come up with equipment that has broadened and hugely opened up the possibilities for hydrographic and oceanographic investigations. What is the link between hydrography, which still very much depends on field experience, and technological developments? Or how is technology directed towards the invention of usable and workable equipment for hydrography? Hydro international interviewed Erik Hammerstad, Senior Principal Engineer /Hydrography Subsea of Kongsberg Maritime AS Norway. Please tell our readers something of your professional education... (read more)
2008-01-01 01:00:00

The Advancing Technology of AUVs

A View of the Autonomous Underwater Vehicle Market
Since the last autonomous underwater vehicle (AUV) review in 2016, the market has continued to grow. The biggest market for AUV systems remains the military. The world’s most advanced Navies own and operate low-logistic AUV systems for mine countermeasures (MCM) in very shallow waters. These systems can operate in confined areas where MCM vessels cannot. The same systems can also be used in search and recovery operations, hydrography and salvage. This market used to be dominated by a handful of AUV providers. However, the number of manufacturers is increasing. Defence primes are also investing in these technologies through internal development... (read more)
2018-12-04 09:23:07

Low-budget Hydrography

Opinions from differing backgrounds
Low-budget Hydrography is the theme of this issue. Realising that different players in hydrography will have differing opinions on various aspects of low-budget hydrography and interested in exploring these divergent views on your behalf, HI asked representatives from various camps for their opinions on some leading questions. The representatives interviewed are: Jeffrey F. Marlow, Survey Technician, US Army Corps of Engineers CDR Guy Noll, Commanding Officer, NOAA Ship RAINIER LTCDR Richard Cullen, Staff Officer Quality Control AHS Questions: 1. Can you briefly explain your position in the hydrographic world: your experience and present position? Cullen: I have been employed by... (read more)
2008-01-01 01:00:00

Excited by Automation Driven by Autonomous Vehicles

Hydro International Interviews Capt. Shep Smith
NOAA is one of the bigger organisations in the world that has surveying and charting in its portfolio. It’s an immense task as the USA has about 95,000 miles of coastline, important ports and a wide range of users – from recreational boaters to the biggest container vessels and tankers. The country also has to deal with environmental disasters like hurricanes and oil spills. NOAA is undergoing changes as the chart portfolio is ‘going digital’ and new initiatives such as using Maritime Autonomous Systems (MAS) for surveys. Hydro International interviews Capt Shep Smith, who generously gave an insight behind the scenes. NOAA is one of the bigger organisations in the world that has surveying and charting in its portfolio. It’s an immense task as the USA has about 95,000 miles of coastline, important ports and a wide range of users – from recreational boaters to the biggest container vessels and tankers. The country also has to deal with environmental disasters like hurricanes and oil spills. NOAA is undergoing changes as the chart portfolio is ‘going digital’ and new initiatives such as using Maritime Autonomous Systems (MAS) for surveys. Hydro International has interviewed Capt Shep Smith, who generously gave an insight behind... (read more)
2015-12-01 09:18:32

DHN's Contribution to Olympic and Paralympic Games in Rio 2016

DHN Chosen to Aid Olympic Water Sports
Hosting the Olympic Games includes supporting water-sports competitions like sailing, swimming marathons and triathlons. The Brazilian Directorate of Hydrography and Navigation (DHN) has been supporting Olympic sailing and other international yachting races since Athens 2004, in addition to being the accredited organisation to provide safety in Brazilian waters and a large portion of the South Atlantic Ocean. As a result, the Rio 2016 Organizing Committee selected DHN to add expert weather forecasting and to deploy metocean buoys  to collect data to support water sports during the recent Olympic and Paralympic Games. The Directorate of Hydrography and Navigation (DHN) is accredited in... (read more)
2016-10-10 03:38:17

Capturing Convection: Glider Validated Modelling

Can Underwater Gliders Be Used to Check Ocean Forecast Accuracy?
Recently, three unmanned underwater vehicles (UUVs) were deployed in the northwest Mediterranean Sea to monitor open-ocean convection via changes in the local density structure. Mixed-layer depth and thermocline response to buoyancy flux were extrapolated from in-situ profiles and used to infer the occurrence of deepwater formation events. The high-resolution data set acquired has been used to assess ocean forecast model performance in this area. The advantages of employing glider data sets in further validation schemes are discussed here. Forecast models are employed by the oceanographic agencies for meteorological and commercial shipping applications, as well as in naval sonar propagation studies,... (read more)
2010-07-12 04:21:48

Visited for You

  Ocean Business   From 31 March to 2 April, Ocean Business and Ocean Careers took centre stage at the National Oceanography Centre in Southampton (UK), followed by Offshore Survey from 1 April.   However, on 30 March there was already much ongoing activity; stands were set up, delegates arrived. Hydro international was invited to join RESON, before the opening of the show, to see the RESON sonars in action. Surveying the harbour of Southampton on board of Southampton's Port Management Protector, a few remarkable features were discovered that even the regular harbour surveyors had not discovered before! In a... (read more)
2009-05-12 12:00:00

A Challenge in the Arctic

Bathymetric Survey for Delineation of the Extended Continental Shelf of the Russian Federation
In 1997, the Russian Federation (RF) ratified the United Nations Convention on the Law of the Sea and started the explorations intended to specify the outer limit of the continental shelf in the Arctic Ocean. In December 2001, Russia was the first State to present the Submission on the outer limit of the continental shelf in this region prepared in compliance with the requirements of the Convention to the Secretary General of the United Nations. In 2002, the UN Commission on the Limits of the Continental Shelf prepared its decision concerning the submitted Claim of the Russian Federation. The commission... (read more)
2012-03-08 04:47:48
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