S-101 – The new IHO Electronic Navigational Chart Product Specification

S-101 is the new product specification for Electronic Navigational Chart (ENC) datasets based on the overarching S-100 framework standard of the International Hydrographic Organisation (IHO). The development of S-101 is being coordinated under the IHO’s Transfer Standard Maintenance and Applications Development Working Group (TSMAD). In the future, S-101 compliant ENCs will succeed and ultimately replace S-57 compliant ENCs as official chart data for ECDIS. The development of S-101 reflects the experience of stakeholder feedback with regard to the current limitations of S-57 based ENCs. The ultimate goal is that an S-101 ENC will provide the base chart layer for S-100... (read more)
2014-10-17 09:30:00

Valeport Sensors Selected for New Micro AUV

Valeport has recently collaborated with ecoSUB who produce a micro AUV that is both advanced and cost-effective. The small and robust sensors are assisting Autonomous Underwater Vehicle (AUV) manufacturers and users to not only get the data they require, but to make AUVs more accessible in the marine environment. ecoSUB is a micro AUV (0.5 metres long) that uses Valeport’s sensors to autonomously acquire sound velocity profiles and has been jointly developed by Planet Ocean and Marine Autonomous Robotics Systems (MARS) group at the National Oceanography Centre (NOC) in Southampton. Part funded by Innovate UK and the UK Defence Science... (read more)
2018-12-17 09:16:40

'As it Was'

By an Old Hydrographer
In 2004 the Provincial Government of the Åland Islands in Finland celebrated the 150th Anniversary of the destruction of Bomarsund, the great, Russian fortress built during the occupation of 1808 to 1854. Much of the credit for this rests with a British naval hydrographic surveyor, Captain Bartholomew Sulivan. It is sometimes forgotten that the war against Russia in the mid-1850s was not waged only in the Crimea, but that there was a ‘second front’, so to speak, in the Baltic between March 1854 and August 1855. Whilst the war in the Crimea was fought almost entirely on land, the Baltic... (read more)
2008-01-01 01:00:00

Dinkum Sands - in Search of an Island in the Far North

In June 1979, the Bureau of Land Management's Outer-Continental Shelf Department proposed to the state of Alaska's Department of Natural Resources that a feature in the Beaufort Sea, known as Dinkum Sands, be eliminated as a salient point determining the 3-mile offshore limit, separating federal and state offshore leasing. Dinkum Sands lies between Narwhal and Cross Islands, four to five miles from each, approximately eight nautical miles from the mainland. The 3-mile limit is a theoretical line marking the territorial sea boundary. All waters within this 3-mile area are considered under state jurisdiction for oil exploration, while outside the limit,... (read more)
2008-01-01 01:00:00

Improving Hydrographic Information

Zones of Confidence for New Zealand
In July 2004 HSA Systems Ltd (HSA) commenced an 18-month project for Land Information New Zealand (LINZ) to assess and assign Zones of Confidence (ZOCs) to all hydrographic surveys incorporated in 138 hydrographic charts of New Zealand. This article provides an overview of the process to create a detailed picture of the quality and extent of New Zealand’s hydrographic survey resource. The ZOC project required each hydrographic survey to be assessed in relation to the data quality aspects of the International Hydrographic Organisation (IHO) S-57 Standard. The project team assessed in excess of 1,792 hydrographic survey fair sheets and allocated... (read more)
2008-01-01 01:00:00

The Advanced Argus System

Coastal management and engineering monitoring
Coastal managers aim for sustainable development of coastal systems, including protection of the hinterland against flooding, swimmer safety, beach recreation and nature conservation. The design and evaluation of coastal-policy measures and engineering interventions are hampered by the dynamics of any natural system. Remote-sensing techniques can provide low-cost support information. A natural system such a coastal zone is subject to the vagaries of natural conditional variation. Within in a matter of weeks to months beach nourishment adopts an equilibrium profile through phases that may be both unexpected and pose temporary problems. Rip currents may even develop within days, forming a serious... (read more)
2008-01-01 01:00:00

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

Southern Ocean Bathymetry

The Scientific Committee on Antarctic Research (SCAR) expert group for the compilation of the new International Bathymetric Chart of the Southern Ocean (IBCSO) proposes to build a consistent bathymetric database for digital ocean mapping of the Southern Ocean together with additional data that covers the ice shields of Antarctica, for example, radar satellite imagery, digital elevation models and free-air gravity from satellite altimetry. Acquisition, storage, compilation, and modelling of the heterogeneous data sets will be realised in a high-end GIS environment with server-GIS capabilities. Digital data processing throughout the work will facilitate the production of traditional printed maps and digital... (read more)
2007-10-27 12:00:00

FIG and Hydrography

Interview with Adam Greenland, Dep Port Hydrographer, PLA
Founded in 1878 in Paris, the Federation International des Geometres (FIG) is an international umbrella organisation for national surveying associations which covers all disciplines of the surveying profession. Commission 4 (Hydrography) has been active since 1968 and the new Chairman, Adam Greenland, Deputy Port Hydrographer at the Port of London Authority (PLA) agreed to be interviewed to enlighten our readers on the activities and importance of Commission 4. Can you give our readers a summary of your hydrographic involvement and career? Following a brief sea-going career, I studied Surveying and Mapping Sciences at the NE London Polytechnic. After graduating I... (read more)
2008-01-01 01:00:00

Underwater Communications and the Level of Autonomy of AUVs

A Tale of Two Technologies
Autonomous underwater vehicles (AUVs) are a recurrent theme in maritime and offshore applications, and in particular those involving long and costly data-gathering operations such as hydrographic surveys. Challenging surveys like those required for search operations following an aircraft crash in the oceans and for mapping oil spills below the ice during Arctic operations demonstrate the need for flexible solutions that enable mapping in deep, remote and congested locations. AUVs provide flexibility by cutting the umbilical cord to the mother vessel. This implies the necessity for underwater communications and a high level of autonomy for the vehicle as well as interoperability... (read more)
2015-08-06 03:10:32
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