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Exploration & Production: The Oil & Gas Review - 2005


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ARTICLES
A Complementary High Precision Acoustic Positioning System for Dynamic Positioning Vessels
Morten Berntsen
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Originally printed in:
Exploration & Production: The Oil & Gas Review - 2005

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Kongsberg Maritime remains the undisputed leader in dynamic positioning (DP) and high precision acoustic positioning (HiPAP) systems with installations on hundreds of vessels throughout the world. One of the more recent installations was onboard Jaya Shipbuilding’s Hull 839 in Singapore; this vessel is fitted with Kongsberg Maritime SDP21 Dynamic Positioning and an independent joystick system with the High Precision Acoustic Positioning (500) reference system as one of the class-required DPII position references (POSREFs).

Jaya Shipbuilding/Jaya Holding has built 18 DP vessels to date, which were delivered to operators including Seacor Marine, Tidewater Marine, Alam Marine, PTSC (Vietnam) and others.

AP is characterised by relatively high and evenly distributed noise and no drift in the position, while inertial positioning has low short-term noise and relatively large drift in the position over a given timeframe.

The hydroacoustic aided inertial navigation (HAIN) system is a complementary system to Kongsberg Maritime’s positioning systems and is capable of providing even greater position accuracy combined with a higher position update. By utilising acoustic and inertial methods, HAIN can operate more effectively, even in ultra deep waterdepths. Other primary operational benefits when using the HAIN includes longer transponder battery life and position update continuity during acoustic drop-out.
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Category:
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Morten Berntsen has had many technical and commercial positions in Simrad, now Kongsberg Maritime, within the fields of underwater positioning and offshore surveys over the last 25 years. He has a background as an electronics engineer, with later education within the fields of economics and business management. After graduating Mr Berntsen was employed by NATO, working with underwater acoustics for defence use.


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