Mobile offshore drilling units (MODU), such as semi-submersibles, usually employ multiple azimuth thrusters to maintain their position during drilling or exploration. However it is reported that there is a considerable degradation compared with its open water performance. This reduction results from thruster interactions with the hull, current and other thrusts. Because it is essential for an accurate evaluation of the dynamic positioning capabilities (DP), researches have been performed to understand and quantify the thruster interaction itself. However these thrusters are often used as a self-propulsion device. In that case, thruster interaction affects the overall power, so the transit speed would be decreased. In the present study, method to improve an effective thrust during the transit operation by steering individual thruster considering the interaction was studied.
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The Twenty-fifth International Ocean and Polar Engineering Conference
June 21–26, 2015
Kona, Hawaii, USA
ISBN:
978-1-880653-89-0
A Study on the Steering Angle Optimization Considering Thruster Interaction in a Semi-submersible Available to Purchase
Seihwan Kim;
Seihwan Kim
Daewoo Shipbuilding & Marine Engineering Co., LTD.
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Jin woo Choi;
Jin woo Choi
Daewoo Shipbuilding & Marine Engineering Co., LTD.
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Je-jun Park
Je-jun Park
Daewoo Shipbuilding & Marine Engineering Co., LTD.
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Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, Kona, Hawaii, USA, June 2015.
Paper Number:
ISOPE-I-15-707
Published:
June 21 2015
Citation
Kim, Seihwan, Choi, Jin woo, and Je-jun Park. "A Study on the Steering Angle Optimization Considering Thruster Interaction in a Semi-submersible." Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, Kona, Hawaii, USA, June 2015.
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