USA: Sonardyne Equips Dragonquest with DP Inertial Navigation System

USA Sonardyne Equips Dragonquest with DP Inertial Navigation System

Sonardyne International has taken its first order for a Dynamic Positioning Inertial Navigation System (DP-INS). Vantage Drilling’s new 12,000 feet-rated drillship, Dragonquest, is set become the first deep water drilling unit in the world to be equipped with the new system when it begins operations in the Gulf of Mexico for Petrobras later this year.

Traditionally, an acoustic positioning system and two separate DGPS systems are used. However, a vulnerability remains should the acoustics be affected by aeration and noise and both GPS systems be simultaneously affected by signal disruption. The latter is particularly common around equatorial regions and during periods of high solar radiation. Solar activity is currently increasing and is forecasted by NASA to peak in 2013.

Consequently, there is a recognised need amongst operators for a third, independent DP reference that would allow safe rejection of a positioning error in one of the other two reference types.

DP-INS combines the complementary characteristics of Sonardyne’s Long and Ultra-Short BaseLine (LUSBL) positioning technology, with high integrity inertial measurements from its Lodestar AHRS/INS platform. The resulting output is resilient to short-term acoustic disruptions and completely independent from GPS.

A single navigation solution is computed and output to a display with intuitive status and quality metrics. Standard output telegrams are available for Converteam, L3 or Kongsberg DP systems.

In addition to the system’s deep water positioning performance and safety benefits, Sonardyne DP-INS delivers valuable costs savings. It can be used with fewer acoustic transponders deployed on the seabed, significantly reducing set-up time following a vessel’s arrival on location. The system also only needs occasional aiding from the acoustic system, extending transponder battery life and reducing maintenance operations.

Spencer Collins, Senior VP International Sales said, “We are delighted to be installing DP-INS onboard Dragonquest. The trials over the last year have successfully demonstrated to vessel owners and operators like Petrobras, that Sonardyne can now offer acoustically aided INS tailored for safe and efficient dynamic positioning operations.”

Subsea World News Staff , January 31, 2012;  Image: Sonardyne

Share this article

Follow Subsea World News

Events>

<< May 2016 >>
MTWTFSS
25 26 27 28 29 30 1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30 31 1 2 3 4 5

Underwater Technology Conference

2016 will be a year to remember for all of us working in the oil and gas industry and it will be talked about in decades to come, such as they…

read more >

5th International Conference Offshore Cabling 2016

At the upcoming event you will get the opportunity to learn from offshore cable installation case studies and gain insights into latest…

read more >

OPEX Global Subsea Power Cables Forum for the O&G and Energy Industry 2016

This year subsea power cable forum will bring together key experts from Oil and Gas and Energy Industry globally to discuss the current…

read more >

ADVANCED SUBMARINE POWER CABLE & INTERCONNECTION FORUM

The 2016 event will look to emulate the success of this years’ conference and continue to showcase real practical examples on what the industry…

read more >