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and sea-based offshore platforms and drilling rig for oil.
* 1) & 2) Conventional fixed platforms
* 3) Compliant tower
* 4) & 5) Vertically moored tension leg and mini-tension leg platform
* 6) Spar
* 7) & 8) Semi-submersibles
* 9) Floating production, storage, and offloading facility
* 10) Sub-sea completion and tie-back to host facilityNote that jack-up drilling rigs, drillships, and gravity-based structures

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