The Seabed Survey Data Model

An Industry Data Model for Managing Seabed Survey Data
Exploration and Production (E&P) companies spend millions of dollars every year undertaking seabed surveys to acquire data to help in many exploration and production activities such as: determining potential well locations, identifying geophysical hazards (geohazards), the selection of potential pipeline routes and offshore facility locations, and asset maintenance. E&P companies utilise hydrographic survey companies to collect, process and deliver seabed survey data to improve project planning and manage risk. However, to extract the true value from the acquired data there is a need to ensure consistency in how the data is structured and delivered so that it is more efficiently... (read more)
2011-09-08 02:24:40

Technology in Focus: Insides of Side-scan Sonar

Advancing Technology for a Wide Range of Purposes
Although today’s multibeam echo sounders come with a backscatter option the more traditional Side-scan Sonar (SSS) still has many advantages when it comes to bottom imaging. Over the past years, SSS technology has gone through an evolution rather than a revolution. In this article we will zoom in on the current state of the art of this useful acoustic imaging device. Side-scan Sonar is mainly used for the detection of objects and bottom structures. To obtain those images it digitises a sound pulse sent out from two transducers mounted on each side of the SSS fish. Images are based on... (read more)
2016-05-19 01:22:38

EIVA

Marine Software and Integrated Systems Solutions
EIVA a/s, based in Aarhus, Denmark, is an independent software and systems company in design and manufacturing software and integrated, customised systems solutions for marine surveying. Founded in 1978, EIVA initially provided equipment, sensors and services for the offshore oil & gas industry. In 1982 the company began development of the NaviPac integrated navigation software. Since then it has undergone continual growth to become today’s recognised high-technology company with a main focus on software and integrated systems solutions for use in hydrographic surveying, seafloor mapping, offshore construction and inspection works, geophysical surveying, oceanographic research, etc. At the beginning of 2003... (read more)
2008-01-01 01:00:00

Sonardyne

Advancing acoustic technology
Sonardyne International has long been a familiar name to anyone involved in sub-sea positioning technology, whether in offshore oil exploration, construction, drilling or any of the countless oceanographic applications for which Sonardyne products are used. Now in its thirty-third year of business, the company is today recognised as one of the leading manufacturers in the industry, frequently setting new benchmarks for technological performance. Sonardyne is now able to boast comprehensive knowledge and understanding of the scientific principles governing sound transmission through water. This knowledge has been applied to the practical demands of the offshore and oceanographic industries in order to... (read more)
2008-01-01 01:00:00

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

Technology in Focus: Hydrographic Processing Software

In What Direction is Progress Headed?
Discussing and comparing software has often been tricky in Hydro International as it is difficult to put the packages together and see clear differences. In this overview of hydrographic processing software, we will highlight trends and movements as indicated by  the responses from software suppliers to our questions. In addition, we have added to this our own observations. All in all, this makes for interesting reading as there are movements in the industry that also tell us where the profession is headed. By Joost Boers, Hydro International, The Netherlands and Lars Kårlin, Data Processing manager, MMT, Sweden. Firstly, we would like to establish... (read more)
2016-11-24 02:08:38

No Exploration without Hydrography

Harvesting minerals in the deep sea
According to a UN group of experts in 1978, "there can be no exploitation of marine resources without exploration and there can be no exploration without hydrography". For hydrographic surveyors this is quite obvious, but exactly how important is surveying in the seabed exploration business? And does hydrographic surveying play a crucial role in the decision making of the ‘seabed explorers’? Let’s take a small tour…. With general mapping for safe navigation purposes, harbour construction and maintenance, offshore and support activities for coastal protection, hydrocarbon exploration in coastal zones, survey and seismic activities for the oil and gas industry, and... (read more)
2008-01-01 01:00:00

Building a Bathymetric Uncertainty Model for AUVs

Fleets of small AUVs are used to survey pipeline routes, rig scour and debris clearance, and for harbour development. While AUV bathymetry can be as good as or better than boat-mounted data, some of the concepts behind the error budgets are very different. This must be understood by the hydrographic surveyor so that they can deploy the AUV appropriately and qualify the data properly. Recent advances in Autonomous Underwater Vehicle technology have led to low-logistics vehicles able to collect survey-quality data useful for engineering objectives. This class of AUV is easy to transport to site, quickly deployed and operated by... (read more)
2017-01-02 03:08:41

Mapping the Deep Ocean with Multiple AUVs

Ocean Infinity’s Seabed Exploration Project
Ocean Infinity’s seabed mapping campaign commenced in the summer of 2017. The Ocean Infinity team is made up of individuals from multiple disciplines, who have gained vast experience with deep-sea exploration operations in the past. Their combined knowledge and insight led to the idea to undertake deep-sea mapping operations using up to eight autonomous underwater vehicles (AUVs), paired with eight unmanned surface vessels (USVs). This novel concept is explained in more detail in this article. Human inquisition drives us to explore. This has led man to delve below the surface of the oceans. Our ability to understand the undersea world... (read more)
2018-04-24 09:22:31

Mapping the Future by Mapping the Past

How Maritime Archaeological Research is Training Tomorrow’s Marine Scientists
This article describes the internship programme that has been offered during six years while performing maritime archaeological projects in the Mediterranean. This collaborative effort between academia and industry provides affordable manpower, whilst interns have a chance to learn and experiment on significant discoveries as part of a closely-knit group. After their internship, motivated interns benefit from broad experiences and contract opportunities. This introduction to quasi-professional employment contrasts with typical commercial operations in terms of pressure and learning opportunities; an approach that translates into continued success for the organisation and the majority of summer interns being motivated to further their career in... (read more)
2013-07-12 02:10:49
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