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JPS54162392A
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Offshore platform mooring cable exchange method
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JPS54161702A
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Method of installing offshore assembled body and platform
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JPS54117102A
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Positioning method of petroleum production installation platform and device of performing said method
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JPS53140801A
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Heavy bottom board type marine platform
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JPS53130802A
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Device for improving offshore platform espectally for retroleum mining rig
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JPS5235403A
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Method and device for anchoring landdlinked floating platform to sea bottom
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JPS5235404A
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Improvement of method and device for fixing offshore rig etc* to sea bottom
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