Pushing Lidar to the Limits

High-resolution Bathymetric Lidar from Slow-flying Aircraft
Airborne bathymetric Lidar is an ideal tool to study underwater features in the usually rather clear waters along the coast of Australia. Due to the remoteness of many of the continent’s coastlines, this is often the only economically viable option for large-scale bathymetric mapping at high resolution. A new toolkit consisting of two airborne Lidar systems flown on a small and slow-flying research motorglider was trialled in NW Western Australia. The same technology will be used over the next three years in the context of a comprehensive study of submerged archaeological landscapes of the so-called ’Sea Country’, more than 1,000km... (read more)
2017-02-06 09:15:23

Deepwater Survey, Investigation and Intervention

Survey, geotechnics and Remotely Operated underwater Vehicle (ROV) operations are all individually very interesting subjects as far as their exponents are concerned. But this combination, with the added dimension of working at an unusual work-site in extreme depths of water, has made the Prestige Project a very challenging programme for participants. In November 2002, whilst under tow in poor weather conditions, the Bahamas-flagged Prestige oil tanker broke in two and sank approximately 150 miles off the north west coast of Spain and Portugal in 3,800 metres (12,500 feet) of water. The two parts of the hull came to rest on... (read more)
2008-01-01 01:00:00

Hydrography in Monaco

160 Years of Partnership With France
France has been providing hydrographic services on behalf of Monaco for 160 years. This article describes this partnership from the early days of systematic surveying to the present state of affairs (including digital chart production).The long-lasting partnership was formalised in a bilateral arrangement in 2005. The event was called exemplary in the annual report of the International Hydrographic Organization (IHO) for 2005: on 19th September 2005, France and Monaco signed the first known bilateral arrangement formalising the provision of hydrographic services by one country on behalf of the other, in accordance with the revised Safety of Life at Sea (SOLAS)... (read more)
2007-04-04 12:00:00

The Importance of Hydrography Establishing the Outer Limit of the Continental Shelf

Commander Alexander Tagore Medeiros de Albuquerque (retd) of the Brazilian?Navy is one of the outstanding hydrographers of the Directorate of Hydrography and Navigation (DHN) of the Brazilian Navy. DHN tasks include the delimitation of the national continental shelf in accordance with UNCLOS. Brazil and its hydrographers have contributed to the text of the UNCLOS since its first draft. It therefore seems appropriate that a Brazilian hydrographer now chairs the Commission. Hydro international was able to interview Mr Albuquerque and it is hoped that the readers shall appreciate not only the importance of the task of the Commission but also the... (read more)
2009-01-05 12:00:00

Offshore Windfarm Survey on Gunfleet Sands

In recent years an expansion in the telecommunications cable industry led to an increase in the market for cable route landfall surveys incorporating geophysical surveys at sea and topographic surveys of the landing site. In the last two years, however, the economic conditions in the telecommunications industry have been such that there has been a significant decline in the number of surveys being commissioned. Therefore, it was with great interest that the coastal survey industry in the United Kingdom followed the development of the offshore windfarm market. This was given a considerable boost by the announcement of significant UK government... (read more)
2008-01-01 01:00:00

Hong Kong Harbour

Surveying for port facilities and marine structures
The products produced by advanced multi-beam bathymetry, Universal Reference Station DGPS Correction Technology, digital photogrammetry, 3D visualisation and fly-through videotography are definitely not just pretty pictures or animations but extremely useful for end-users: the designer, engineer, planner and port administrator. Hong Kong (HK) was founded as a port for China some 160 years ago and has flourished as an ‘entreport’ since then. Substantial development of HK Harbour is one indispensable milestone in maintaining the position of HK as the main gateway to China and premier business areas of Asia. Development and reclamation works for HK Harbour can be traced back... (read more)
2008-01-01 01:00:00

The Making of RV 'Kronprins Haakon'

New Norwegian Ice-breaking Research Vessel
Norway is a maritime country with a very long coastline, plus it is very much a polar nation with 80% of its sea territory and 45% of its land mass north of the Arctic circle. It is the only country with territorial claims both in the Arctic and the Antarctic. In spite of this, Norway has not had a purpose-built polar research vessel since Roald Amundsen’s 'Maud' (1917), having instead relied on converted commercial vessels for such purposes. That has all changed, however, now that 'Kronprins Haakon' has come into service. This article provides insight into the making of this new multi-purpose research vessel.... (read more)
2018-04-17 10:51:23

Integrated Mapping of Seabed Features

Dual use Hydrographic Surveys for Seabed Nature and Morphological Research
The Italian Navy, using survey vessel Ammiraglio Magnaghi and personnel from the “Istituto Idrografico della Marina” (IIM), in cooperation with ENEA Marine Environment Research Centre, surveyed the Levante Canyon system, located in the offshore area of “Cinque Terre”, eastern Ligurian Sea, NW Mediterranean. The purpose of the operation in the area depicted in figure 1 was on the one hand to collect the data necessary for the updating of nautical documentation and on the other hand to carry out scientific research on the seabed nature and specifically on deep coral banks. Italian Navy Ships are equipped with state-of-the-art equipment and... (read more)
2014-10-06 02:21:18

Surveying the Scheldt

The Flemish Hydrography is responsible for surveying the river Scheldt on Flemish territory up to the lock of Wintam. On the Dutch Western Scheldt Flemish Hydrography surveys only to check the dredged depths in the fairway. On the Flemish Sea Scheldt overall surveys are done for regular national and international charting purposes, besides surveys for very specific projects, such as the maintenance of dredging works. National and international paper charts and digital products (for example ENC’s) are produced for the common user but also for the dedicated users as pilots, engineers, port authorities, shipping companies and research institutes. The river... (read more)
2008-01-01 01:00:00

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
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