Brazilian Offshore Positioning Contracts

Veripos has been awarded a series of contracts in Brazil under which it is to provide high-precision GNSS positioning products and services to leading offshore operators, DOF Subsea, NorSkan Offshore and Companhia Brasileira de Offshore (CBO).     The DOF Subsea contract includes the provision of Veripos Ultra dual-beam precise-point positioning (PPP) service supported by two LD2-G2 integrated mobile demodulators and proprietary Verify QC processing software aboard the ROV support vessel, Skandi Chieftan.  Similar facilities have already been operational for some time aboard the company's other ROV vessels, Skandi Fluminense and Skandi Salvador.   Meanwhile, DOF Subsea's associate Brazilian concern, NorSkan Offshore, is to... (read more)
2009-08-19 03:45:48

Which Satellite Positioning Systems

The International Marine Contractors Association (IMCA, UK) has published new guidance on the selection of satellite positioning systems, warning that in recent years lower priority has been given to system selection than is wise. This is particularly the case when choosing a dynamic positioning (DP). The guide explains that the use of inappropriate systems has led to delays in project execution, vessel downtime and, in some circumstances, damage to assets. In the introduction to ‘Guidance on the Selection of Satellite Positioning Systems for Offshore Applications' (IMCA S 018) the association explains that the costs incurred during any of these incidents... (read more)
2011-07-08 12:00:00

Indonesian Positioning Contract

Veripos, headquartered in the UK, has been awarded a further contract for supply of precision services to PT Pageo Utama of Jakarta, one of Indonesia's leading independent offshore survey organisations.   The facilities involve supply of continuous positioning services aboard two Saipem construction support vessels, the derrick lay barge, Castoro Otto, and the diving support vessel, Eclipse, engaged on key offshore projects for Carigali-Triton Operating Company in Malaysia-Thailand and Premier Oil for the Indonesian Gajah Baru gas field project. Each vessel is being provided with Veripos's Ultra Precise Point Positioning (PPP) service for decimetre-level accuracies together with Verify QC software... (read more)
2011-07-18 11:28:41

Petrobras Positioning Contract for Veripos

Veripos has been awarded a three-year contract by the Survey Department of Petroléo Brasileiro S/A (Petrobras) for provision of high-accuracy GNSS positioning services in support of rig moves as well as operation aboard sixteen specialist support vessels engaged in pipelay, anchor-handling and flowline installation operations. Under the contract, Veripos will provide its high-precision Standard GPS augmentation service with a typical correction update rate of 15 seconds. Associated hardware supplies include LD3-D integrated mobile demodulators for use in conjunction with Petrobras-provided GPS receivers plus, UHF receivers for accessing both the Brazilian company's own reference network and Veripos Standard service signals.Supplementary facilities... (read more)
2010-05-27 09:14:23

Veripos Extends GNSS Positioning Networks

Veripos has extended the Baltic sector of its European multi-source Differential GPS service network with the establishment of new reference station facilities in Stockholm. Meanwhile, a new station has also been added to the Americas regional network serving offshore users in North, South and Central America as well as the Caribbean with installation of similar facilities in San Diego for enhanced coverage of eastern sectors of the Pacific. Commenting on the latest extensions, Veripos Technical Director Bobby Johnson said that they marked a further stage in the development of the Company's worldwide precision positioning capability as a result of increasing... (read more)
2010-07-26 11:22:29

Positioning First West African TLP

Fugro Survey BV is to undertake the crucial positioning work to install West Africa’s first Tension Leg Platform (TLP) on the Kizomba-A oilfield off Angola. The platform has to be positioned with an accuracy of less than a metre in water depths of 1180m. The contract was awarded to Fugro by Heerema Marine Contractors, which will install the TLP for the field operators. The TLP will be transported from Holland and installed at Kizomba using the float-over method to connect to pre-installed piles and tendons. When the TLP has been installed it will form part of the overall production scenario... (read more)
2003-11-11 12:00:00

Dredge Efficiency and Precise Positioning

Integrating Dredging and Hydrographic Techniques
Dredgers involved in mining for (precious) minerals and metals often work in an inland dredging pit. Dredgers float in a ‘wet environment’ where the surrounding water is used as transport medium. The fact that the minerals are mostly covered in various sediments is one of the biggest problems in mining them. This article describes some of the techniques used in these dredging operations and illustrates the importance of integrating techniques and information. Most minerals, like rutile and zirconia, are to be found on top of a layer of clay with the highest concentrations found closest to it. Pewter is mostly... (read more)
2008-01-01 01:00:00

Underwater Positioning Systems and Transponders

Kongsberg Maritime has launched during OTC a new range of acoustic underwater positioning systems and transponders, designed to harness the power of 'Cymbal' signal processing protocol whilst also being backwards compatible with the HPR 400 protocol and analog transponders. Other systems on display at OTC include HiPAP 501/451/351/351P, which are the second generation acoustic underwater positioning system offering improved position accuracy, longer range capability and faster data telemetry.  The new cNODE series of transponders consists of three models: Maxi - a full size transponder with large battery capacity, floating collar and release mechanism, and long life operation, designed primarily for... (read more)
2010-05-04 11:57:45

Gardline Geosurvey Extends Positioning Contract

Aberdeen-based Veripos has secured an extension to its contract with Gardline Geosurvey, UK, for the provision of precise satellite positioning services. Under the general services agreement, Veripos will continue to supply its full range of positioning solutions to Gardline Geosurvey’s fleet of eleven multi-role survey vessels.   The vessels operate throughout the world on behalf of major offshore exploration, renewables, construction and telecommunications companies as well as government agencies and harbour authorities. The contract ensures Gardline Geosurvey will continue to benefit from the Veripos Ultra service that uses precise point positioning (PPP) methods to ensure continuous decimetre-level accuracy with the... (read more)
2011-02-16 01:57:34

TerraStar Positioning for Dredging Operations

DEME, Belgium, has commissioned TerraStar GNSS’s TerraStar-D Precise Point Positioning (PPP) service to support the worldwide near-shore operations of its multifunctional fleet of dredgers and auxiliary vessels. Operating in conjunction with Septentrio AsteRx2eL GNSS positioning and AsteRx2eH heading receivers, the TerraStar-D service will provide DEME’s vessel fleet with seamless high-precision decimetre-level accuracies using a combination of GPS and Glonass satellites to ensure faster levels of convergence and high update rates in the most demanding environments. Selection of the specialist service follows extensive trials under the auspices of DEME’s Survey Department during which recurring real-time accuracies were also shown to be... (read more)
2013-02-01 12:00:00
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