Sonardyne Acoustic Positioning Saves Technip Time

Press Release
Friday, October 12, 2012
Flexible Jumper Deployment: Photo credit Sonardyne

Technip completes 21 subsea jumper metrology operations using Sonardyne International's Lodestar GyroCompatts & saves 8 days working time.

Using the latest Wideband Long BaseLine (LBL) acoustic positioning hardware by optimising its technique, Technip was able to complete each metrology operation in an average of 13 hours, with one such operation conducted in only 8 hours.

Subsea metrology requires accurate, precise and robust acoustic measurements so that a spool or jumper can be successfully fabricated and installed. For a low-risk, multi-functional and cost-effective solution to the project, Sonardyne recommended Lodestar GyroCompatts, integrating the features of the company’s most advance LBL transponder with a Lodestar Attitude and Heading Reference System (AHRS) in a single ROV-deployable subsea housing. This integration provides high update rate wireless attitude, heading, heave, surge, sway, pressure, sound velocity (SV) and acoustic positioning of any subsea object.


Edd Moller, Sonardyne’s Survey Support Group Manager explained, “One of the main challenges of acoustic metrology is to ensure that the measured wideband acoustic range can be translated accurately down from the transponder to the hub level. This is traditionally done using inclinometer Compatts which is then QC’d by rotating the Compatts in the hubs to determine misclosure in both the stab to hub mating and also inclinometer and alignment errors.

Thus the main purpose of this project was to simultaneously use a GyroCompatt in each hub with precision stabs and receptacles. Acoustic ranges could then be made whilst rotating the GyroCompatts and then using the attitude data recorded by the GyroCompatt, the projections of the hub position could be deduced. This meant Technip could compare the calculated Hub-to-Hub distances during the different rotations in order to justify removing the requirement for this alignment QC procedure altogether.”


Maritime Reporter June 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Technology

BMT ARGOSS Awarded OHSAS 18001

BMT ARGOSS, an operating company of BMT Group Ltd. has been awarded the universally recognized standard for occupational health and safety, BS OHSAS 18001. BMT ARGOSS,

There’s Still Time for SHIPPINGInsight Award Entries

Entry submissions for the first SHIPPINGInsight Award are due Friday, Aug. 1, but organizers said they will continue to accept nominations through following week to provide some extra time.

Joint Project Studies Condition-based Engine Monitoring

Classification society ClassNK announced that it will participate in a joint project together with Mitsui Engineering & Shipbuilding Co., Ltd. and MES Technoservice Co.

Offshore

Fugro Achieves Innovation through Integration

When Aberdeen-based Diamond Offshore wanted to add new functionality to the existing helideck monitoring system on the Ocean Guardian drilling rig in the North Sea,

BMT ARGOSS Awarded OHSAS 18001

BMT ARGOSS, an operating company of BMT Group Ltd. has been awarded the universally recognized standard for occupational health and safety, BS OHSAS 18001. BMT ARGOSS,

Transocean Prices Initial Public Offering

Transocean Partners LLC, a Marshall Islands limited liability company formed by Transocean Ltd., has announced  the pricing of its initial public offering of 17,

Electronics

New AVEVA ISM Bridges the Gap

AVEVA launches a new application for governing asset information using a standards-based methodology. AVEVA announced the launch of AVEVA Information Standards Manager (AVEVA ISM),

Globecomm to Provide VSAT for PBJV Barge

Purpose-built accommodation and pipe-lay barge on charter to Petronas equipped with VSAT and L-Band services. Globecomm Maritime has been awarded a contract

VSTEP Wins Mexican Navy Simulator Contract

The Mexican Navy selected VSTEP to supply a Class A NAUTIS Full Mission Bridge (FMB) Simulator and 24 NAUTIS desktop trainer stations for the Naval Academy in Veracruz.

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Offshore Oil Pipelines Port Authority Salvage Ship Electronics Ship Simulators Winch
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.2546 sec (4 req/sec)