Hydrological Surveying and Mapping Forbidden in China

Hydrological monitoring and mapping will not be allowed in China and hydrological organizations are now expected to strengthen their monitoring of changes in water flow and quality that could potentially threaten the security of water use. The State Council regulation also states that hydrological forecasts should only be released to the public by relevant government departments or authorised hydrological organisations, other organisations and individuals are not allowed to release the information. Organizations and individuals that flout the new law and conduct hydrological activities without authorisation will be fined 50,000 to 100,000 yuan (US$6,500 to 13,000), according to the regulation. China... (read more)
2007-05-11 12:00:00

Guyana Benefits from UK Funded Hydrographic Surveying

The Government of Guyana, through an agreement with the United Kingdom, has benefited from a Commonwealth Maritime Economics Programme in Hydrographic Surveying. Guyana was able to access funds for more than US$1.1M for the conducting of Hydrographic Surveys or Sea-Mapping in the Demerara River, and onwards to Grove on the East Bank of Demerara. The UK Surveying company IIC Technologies, the Ministry of Public Infrastructure, and the Maritime Administration Department collaborated to complete the first phase of the project which began in October 2017 and ended in February 2018. The second phase of the project is expected to commence in... (read more)
2018-11-06 09:32:15

Hydrographic Surveying in Dense Aquatic Vegetation

Digital signal processing for improved bottom tracking
It can be difficult to detect the true bottom depth beneath dense Submersed Aquatic Vegetation (SAV) using current hydrographic echo sounder systems. High acoustic reflectivity of the vegetation can result in depth declarations within the vegetation canopy. This leads to underestimating bottom depth and overestimating dredging quantities required. This is demonstrated at a harbour, densely colonised with a robust bladed seagrass. Two echo sounder systems were used simultaneously - one a widely used single-beam hydrographic echo sounder; and the other a similar system designed to detect SAV. Dramatically different results are attributed to differing signal processing approaches. This is further... (read more)
2008-01-01 01:00:00

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

New, High-performing USV for Ocean Surveying

A new unmanned surface vehicle (USV) designed for the Chinese market offers an open and low-cost platform to measure water current and direction. Nortek China has integrated Doppler instrumentation on the vehicle to help better meet user requirements for ocean surveying. The new USV has an industrial personal computer (IPC) as the main operation platform and uses Remote Desktop, a remote control technique, to communicate with all the instruments installed. This means that the vehicle offers an open and low-cost platform for customers who need to carry out several different tasks at the same time. For example, users can perform... (read more)
2019-05-06 06:57:40

Surveying Z-Boat Visible in Google Earth

Surveyors from Select Energy Services, San Antonio, USA, were surprised to see one of their remotely operated hydrographic survey vehicle’s activities photographed and incorporated into Google Earth. Water sourcing manager Justin Duke was preparing to embark on a hydrographic survey of a water holding pond for a natural gas fracturing operation in Texas. As the Google Earth image came into focus after he had entered the lat/long coordinates, a small yellow dot could be seen in the middle of the frac pit, and seemed to have a wake behind it. When he zoomed in, Justin saw his Z-Boat in the... (read more)
2012-12-18 09:46:45

Korea Speeds Up Surveying Waters near Dokdo

A Korean vessel, currently surveying the East Sea, is reported to have made its way to the country's easternmost islets of Dokdo. According to Kyodo News Agency at 6:40 a.m. this morning, the Haeyang 2000 vessel entered the waters near Dokdo which Japan also claims is part of its exclusive economic zone. A Japanese patrol boat reportedly ordered the vessel to stop its activity immediately but the Haeyang 2000 refused, saying it was only surveying South Korean waters and should not be obstructed. Government officials in Seoul say Korea (read more)
2006-07-06 12:00:00
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