SUBSEA TECHNOLOGY
SUBSEA POSITIONING TECH DEPLOYED
Sonardyne Brasil has been chosen by vessel owner and operator Companhia Brasileira de Offshore (CBO) to meet Brazil’s stringent new contracting specifications for subsea positioning. The multi-functional
S
Compatt 6 transponders and Ranger 2 USBL (Ultra-Short BaseLine) HPT transceivers that make up the order will be utilised alongside existing Sonardyne technology onboard the ROV support vessel CBO Isabella in support of a wide variety of subsea operations, including structure installation, pipeline metrology and ROV tracking. On long-term contract to Petrobras since 2010, the CBO Isabella opted to have available two independent acoustic positioning systems so that operations can continue in the event
ixth generation (6G) underwater positioning technology from
navigation for the vessel’s work-class ROV.
Replacing the CBO Isabella’s
With her upgrade to Sonardyne 6G acoustic technology now complete, CBO Isabella is equipped to meet Brazil’s new specifications for subsea positioning
of a single system failure. For the past few years, this requirement has been met through a combination of Sonardyne’s Fusion LBL, Optimised Ranger 2 USBL and Sprint INS technologies; providing the vessel with the flexibility to meet virtually any project requirement in any water depth, including Sparse LBL, full LBL and acoustically aided inertial
previous generation through- hull transceivers with fully digital HPT transceivers completes her upgrade to 6G, and means the vessel can exploit the full benefits of Sonardyne’s 6G technology. This is proven to offer stable and precise positioning for DP, reliable structure and vehicle tracking in any water depth and support for simultaneous vessel operations using shared seabed transponder arrays already deployed in the field. The work to equip the
vessel’s inventory of Compatt 6 LBL transponders, with high-specification DigiQuartz pressure sensors, was carried out at Sonardyne’s service, support and training centre in Macaé, Brazil.
For more information visit
www.sonardyne.com
MINI ROV capability ADDED TO FLEET i
-Tech Services, a Subsea 7 company, has strengthened its underwater inspection and
maintenance capability with the provision of new mini remotely operated vehicles (ROVs) for
performing subsea operations in challenging environments. A cost-effective solution for smaller scopes of work, the mini ROVs are quick to deploy and can be transported easily to site via helicopter or airline carrier for faster transportation. Despite their
compact size, the mini ROVs have high maneuverability and power-to-weight ratio, allowing them to carry small tools and manipulators
i-Tech technician working on mini ROV
for operating effectively in strong currents. They are well suited for rapid mobilisation and manual deployment from any platform, FPSO, barge or vessel of opportunity. Neil Milne, vice president for i-Tech
Services, said: “The introduction of mini ROVs into our portfolio enhances our rapid-response inspection capability and allows us to provide a more comprehensive UWILD offering. Furthermore, it provides clients with a reliable, cost-effective and safe alternative to traditional manned inspection or work-class ROV services.”
For more information visit
www.i-tech7.com
www.engineerlive.com 47
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