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

Seismic Activity Data Collection on the Ocean Floor

Sponsored Article
Unlike neighbouring Japan, earthquake activity is infrequent in the peninsula area of South Korea, and those that do occur tend to be low in intensity. Typically, earthquakes in this region measure between 2.0 and 5.0 on the Richter scale[1]. The record for the quake with the highest magnitude on the Korean Peninsula stood for some time, recorded at 5.3 in 1980. This was recently overtaken by a 5.8 magnitude tremor in Gyeongju in 2016 and a 5.4 magnitude tremor in Pohang, followed soon after by a 4.8 magnitude aftershock tremor. Data on these events is collected using the existing seismological... (read more)
2019-08-06 08:30:32

Founder of the Five Deeps Expedition Launches New 2020 Voyage

Through collaboration between investor and explorer Victor Vescovo, Triton Submarines and EYOS Expeditions, the 2020 Caladan Oceanic expeditions will yet again visit never-before-seen ocean depths and famed historic sites. A first of its kind two-person research submersible, designed and manufactured by Triton specifically for extreme deep-sea exploration endeavours, will bring its stories of the voyage to the world in near real-time between February and July of 2020. The vessel, the Deep Submergence Vehicle (DSV) Limiting Factor, is the first commercially certified full-ocean-depth submersible. It will be transported and deployed into the ocean depths by the Deep Submergence Support Vessel (DSSV)... (read more)
2020-02-07 02:14:24

SeaRobotics Corporation

Small affordable USVs for hydrographic data gathering
SeaRobotics Corporation was formed in 1999 to commercialise technology developed by the US Navy’s Office of Naval Research (ONR). After working with Autonomous Underwater Vehicle (AUV) technology and developing numerous communication systems utilising ad hoc networking for the transportation community, SeaRobotics continued its quest to develop autonomous systems for the hydrographic and oceanographic survey community. Extensive experience developing AUVs, ROVs and oceanographic instruments has led to the development of a growing family of Autonomous and Unmanned Surface Vehicles (USVs) and other marine robotic products in Florida, USA. During the last few years, significant interest in autonomous and unmanned vehicles has... (read more)
2008-01-01 01:00:00

Accreditation Allows 'Tsunami' to Make Waves

When Andrews considered a new coastal hydrographic vessel, a smaller RIB best suited their customers’ survey needs, but would it meet the strict requirements for MCA Accreditation? Roy Jarman, Andrews Survey, and Ed Cookson discuss the modifications Andrews had to put in place. Andrews Survey, in Great Yarmouth, carries out a wide range of hydrographic, geophysical and geo-technical projects. These range from cable & pipeline landfalls harbour investigations, the charting of coastal erosion and beach profiles, pre and post-dredge surveys, windfarm SIs and resource mapping. When Andrews considered a new hydrographic work-boat therefore they sought to offer as wide a... (read more)
2008-01-01 01:00:00

The European Seafloor Observatory Network (ESONET)

ESONET proposes a network of sea floor observatories around the European Ocean Margin, from the Arctic Ocean to the Black Sea, for strategic long-term monitoring as part of the European GMES (Global Monitoring for Environment and Security). The network will have capabilities in geophysics, geotechnics, chemistry, biochemistry, oceanography, biology and fisheries. Long-term data collection and alarm capability in the event of hazards (e.g. earthquakes) will be considered. Ten initial areas for ESONET development have already been identified, in addition to a mobile emergency response station. The submarine terrain around Europe, from the continental shelves to 4,000 m depth, is known... (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


  Australasian Hydrographic Society   East Australia Region It is noteworthy to record that a present member of the East Australia Region (EAR)/AHS and past Hydrographer of the Royal Australian Navy (RAN) is now engaged in large-scale maritime security operations in the Persian Gulf. As Task Force 158 Commander, Commodore Bruce Kafer RAN now has the responsibility – in addition to other aspects of his mission – of ensuring the security of ships, personnel and equipment engaged in large-scale energy infrastructure development work in the Northern Arabian Gulf. These operations will extend well into 2010. Informed sources put the value... (read more)
2009-01-05 12:00:00

Trends and New Technology in the ROV Industry

New IMCA ROV Classifications and Applications Moving Towards Renewables
Over the past few years, the requirement for ROV support in the oil & gas sector has been hampered by the downturn in the sector. However, the continued investment in renewable energy has provided opportunities for manufacturers to continue their R&D projects to create the next generation of ROV systems. In view of this, the IMCA guidelines for the Safe and Efficient Operation of Remotely Operated Vehicles (IMCA R 004 Rev4) has been updated. The guidelines now include an expanded list of ROV classifications based upon the increased diversification of tasks performed by ROV systems around the globe. The revised... (read more)
2017-08-07 01:31:12

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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