A New Solution for Subsea Metrology

Combination of Acoustics and Photogrammetry

Invariably, metrology is required at the critical stages of field development and the main goal for improvement is to reduce the time taken for acquiring data. The technique discussed offers significant improvements in terms of time and required equipment. Offshore Construction During offshore construction several structures have to be interconnected by means of spools or jumpers. In order to determine the dimensions and relative attitudes of the connections, surveyors deploy ROV-mounted instrumentation. IMCA S019 Guidance on Subsea Metrology offers the following combined accuracy guideline: 50mm to 150mm in X,Y and Z axis 0.5° to 1° for relative pitch, roll and heading.... (read more)

2014-09-02 11:57:09

How to Simplify Survey Reporting

Wouldn’t it be great to work on a hydrographic project without spending a lot of time looking for all the elements needed for a professional report? This was what Sanyal Sunil had in mind when he developed SURge, a digital tool to simplify survey reporting. Wouldn’t it be great to work on a hydrographic project without spending a lot of time looking for all the elements needed for a professional report? This was what Sanyal Sunil had in mind when he developed SURge, a digital tool to simplify survey reporting. Hydrographic survey reporting has always been a headache for surveyors in the field, as they have to spend a lot of time formatting the reports, finding the correct logos and diagrams, displaying observations schematically, and carrying out irrelevant calculations, all of which have to be neatly represented in the report but have nothing to do... (read more)

2020-02-24 02:03:38

FME 2009

Safe Software has announced the release of FME 2009 a spatial data conversion and distribution solution. This new version, which includes releases of FME Desktop and FME Server, has been enhanced to make it even easier for the geospatial industry to access the spatial data they need to use. Over recent years, three trends have been emerging in the geospatial industry that have increased the demand for improved data interoperability: a rise in the numbers of popularised and widely used formats, a growing interest in spatial data by non-traditional GIS professionals, and vastly larger data volumes resulting from... (read more)

2009-01-13 09:30:51

3D Sonar Visualisation Software for ROVs

CodaOctupus, UK, has released version 2 of the Vantage software, a visualisation software suite for the Dimension 3D sonar specifically targeted at ROV-centric applications. The key new features in Version 2 include: new 3D XYZ Binned Profiler Output allows fantastic utility of the Dimension 3D sonar to provide complete profile XYZ data over a selectable slice ahead of the ROV with real-time binning options optimised for seabed surface generation or seabed with vertical features. Similar to the 3D XYZ Data Visual Export feature, incoming navigation is used when available to provide a complete coverage map, when no navigation data is... (read more)

2015-01-26 11:35:51

AUV Fest Demonstrates Bluefin Capabilities

The AUV Fest, held July 2007 and sponsored by the Office of Naval Research, staged Bluefin Robotic's most recent vehicle capabilities. During the two-week long demonstration of autonomous underwater vehicles from around the USA, Bluefin was able to achieve two significant successes in terms of the progression of AUV technology. The first came during a practice run of cooperative behaviours between multiple vehicles for the Autonomous Operations Future Naval Operations (AOFNC) Program. A team of two Bluefin-12 AUVs and one Bluefin-21 AUV ran offshore performing a MCM mission in synchronisation while detecting mine-like objects and generating CAD/CAC snippets of... (read more)

2007-08-01 03:22:24

RMS Submarine Complements Next Geosolutions’ Baltic Activity

Next Geosolutions’ 17-month project ‘220 kV A.C. Connections – West of Adlergrund’, performing marine surveys for cable route design and engineering in the western Baltic Sea, has been supported by RMS Submarine with resourcing solutions assistance. Next Geosolutions’ workscope for its client Prysmian (end client 50 Hertz) has included nearshore and offshore multibeam, geophysical (SSS, SBP, mag), UXO (using the Katria Scanfish solution with 4 mag array), geotechnical (VC and PCPT) and ROV inspection operations, as well as beach landing topographic surveys. The project consists of multiple 220 kV AC grid connections of the two offshore wind parks (OWP) Arkona... (read more)

2016-09-20 09:50:01

Making Security Sweeping Faster

Applied Signal Technology has chosen the MacArtney A/S Focus-2 ROTV as platform for the fastest, most accurate towed SAS (synthetic aperture sonar) system yet - the Prosas Surveyor. This towed sonar system combines the superior flight characteristics and data output capacities of the Focus 2 ROTV with the high resolution wide sweep qualities and output processing of AST's SAS sonar system. Traditionally, SAS sonar systems have been mounted on AUVs, but these vehicles have their limitations. Current and tide can render AUV positioning inaccurate, require high levels of power from AUV motors, and cannot be accessed real time. Sweep... (read more)

2008-10-06 03:39:40

Transponders for Locating Underwater Objects

USA-based JW Fishers has introduced a line of low-cost transponders and an interrogator used to locate them. The Fishers MFT-1 multifrequency transponder is capable of transmitting 9 different frequencies between 24kHz and 33kHz. Having transponders with different frequencies allows many to be deployed in the same area with each transmitting a unique signal. The standard MFT-1 will operate from 4 to 8 months depending on the type of batteries installed. An optional extended housing is available that accepts more batteries, tripling the operating time. A Very Long Duration housing is also an option which holds enough batteries to operate the... (read more)

2013-04-02 01:44:13

Fugro GRL Models Subsea NDT Tools

As part of a European Project to develop new underwater non-destructive testing (NDT) tools, Fugro GRL provided its DeepWorks software to simulate the deployment by ROV of a long range ultrasonic manipulator in the jacket structure of an offshore platform. The work was part of ‘SubCTest', a EUR2m project, sponsored by the EC to develop ROV-deployable inspection systems. TWI in Cambridge, UK, has developed a prototype Long Range Ultrasonic Tool (LRUT) designed to be deployed by ROV and clamp around vertical or horizontal jacket tubulars. Fugro GRL created a simulation of the deployment of the tool by ROV and... (read more)

2011-01-25 11:55:00

French Contribution to Ocean Business 2013

The French Trade Commission UBIFRANCE in London will showcase the best of French ocean technology on the French Pavilion at Ocean Business 2013, taking place from 9 to 11 April 2013 in Southampton, UK. A total of eight sea-technology companies from France will be attending the Ocean Business trade show as part of the French Pavilion (Stand T5). The French companies, from across the sector, will present their innovative products and advanced technological solutions in sea technology in order to reinforce their professional contacts with British partners and to provide mutually beneficial business opportunities. ACSA ACSA specialises in undersea robotics... (read more)

2013-03-05 04:40:19