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- Offshore_construction abstract "Offshore construction is the installation of structures and facilities in a marine environment, usually for the production and transmission of electricity, oil, gas and other resources.Construction and pre-commissioning is typically performed as much as possible onshore. To optimize the costs and risks of installing large offshore platforms, different construction strategies have been developed.One strategy is to fully construct the offshore facility onshore, and tow the installation to site floating on its own buoyancy. Bottom founded structure are lowered to the seabed by de-ballasting (see for instance Condeep or Cranefree), whilst floating structures are held in position with substantial mooring systems.The size of offshore lifts can be reduced by making the construction modular, with each module being constructed onshore and then lifted using a crane vessel into place onto the platform. A number of very large crane vessels were built in the 1970s which allow very large single modules weighing up to 14,000 tonnes to be fabricated and then lifted into place.Specialist floating hotel vessels known as flotels are used to accommodate workers during the construction and hook-up phases. This is a high cost activity due to the limited space and access to materials.Oil platforms are key fixed installations from which drilling and production activity is carried out. Drilling rigs are either floating vessels for deeper water or jack-up designs which are a barge with liftable legs. Both of these types of vessel are constructed in marine yards but are often involved during the construction phase to pre-drill some production wells. Other key factors in offshore construction are the weather window which defines periods of relatively light weather during which continuous construction or other offshore activity can take place. Safety is another key construction parameter, the main hazard obviously being a fall into the sea from which speedy recovery in cold waters is essential.The main types of vessels used for pipe laying are the \"Derrick Barge (DB)\", the \"Pipelay Barge (LB)\" and the \"Derrick/Lay barge (DLB)\" combination. Diving bells in offshore construction are mainly used in water depths greater than 120 feet (40 m), less than that, the divers use a metal basket driven from an \"A\" frame from the deck. The basket is lowered to the water level, then the divers enter the water from it to a maximum of 120 feet (40 m). Bells can go to 1,500 feet (460 m), but are normally used at 400 to 800 feet (120 to 240 m).Offshore construction includes foundations engineering, structural design, construction, and/or repair of offshore structures, both commercial and military, including: Subsea oil and gas developments Offshore platforms – fixed platforms, semi-submersibles, spars, tension leg platforms (TLPs), floating production storage and offloading (FPSOs), etc. Floating oil and gas platforms – semi-submersibles, spars, TLPs, FPSOs, etc. Offshore wind power Submarine pipelines↑ ↑".
- Offshore_construction thumbnail Kentish_Flats_185488397_729bb056f4_o.jpg?width=300.
- Offshore_construction wikiPageExternalLink 619.
- Offshore_construction wikiPageID "193341".
- Offshore_construction wikiPageLength "4313".
- Offshore_construction wikiPageOutDegree "29".
- Offshore_construction wikiPageRevisionID "646149202".
- Offshore_construction wikiPageWikiLink Category:Coastal_construction.
- Offshore_construction wikiPageWikiLink Category:Offshore_engineering.
- Offshore_construction wikiPageWikiLink Condeep.
- Offshore_construction wikiPageWikiLink Crane_vessel.
- Offshore_construction wikiPageWikiLink Cranefree.
- Offshore_construction wikiPageWikiLink Derrick_Barge.
- Offshore_construction wikiPageWikiLink Drilling_rig.
- Offshore_construction wikiPageWikiLink Fixed_platform.
- Offshore_construction wikiPageWikiLink Floating_production_storage_and_offloading.
- Offshore_construction wikiPageWikiLink Flotel.
- Offshore_construction wikiPageWikiLink Jackup_rig.
- Offshore_construction wikiPageWikiLink Mooring_(watercraft).
- Offshore_construction wikiPageWikiLink Offshore_geotechnical_engineering.
- Offshore_construction wikiPageWikiLink Offshore_wind_power.
- Offshore_construction wikiPageWikiLink Oil_platform.
- Offshore_construction wikiPageWikiLink Pipelay_Barge.
- Offshore_construction wikiPageWikiLink Safety.
- Offshore_construction wikiPageWikiLink Semi-submersible.
- Offshore_construction wikiPageWikiLink Spar_(platform).
- Offshore_construction wikiPageWikiLink Submarine_pipeline.
- Offshore_construction wikiPageWikiLink Subsea_(technology).
- Offshore_construction wikiPageWikiLink Tension-leg_platform.
- Offshore_construction wikiPageWikiLink Weather_window.
- Offshore_construction wikiPageWikiLink Wikt:onshore.
- Offshore_construction wikiPageWikiLink File:Kentish_Flats_185488397_729bb056f4_o.jpg.
- Offshore_construction wikiPageWikiLink File:Oil_platform_P-51_(Brazil)-2.jpg.
- Offshore_construction wikiPageWikiLinkText "Construction (offshore)".
- Offshore_construction wikiPageWikiLinkText "Derrick/Lay Barge".
- Offshore_construction wikiPageWikiLinkText "Ocean Engineering".
- Offshore_construction wikiPageWikiLinkText "Ocean engineering".
- Offshore_construction wikiPageWikiLinkText "Ocean".
- Offshore_construction wikiPageWikiLinkText "Offshore Structures".
- Offshore_construction wikiPageWikiLinkText "Offshore construction".
- Offshore_construction wikiPageWikiLinkText "Offshore engineering".
- Offshore_construction wikiPageWikiLinkText "Offshore structures".
- Offshore_construction wikiPageWikiLinkText "Offshore".
- Offshore_construction wikiPageWikiLinkText "construction".
- Offshore_construction wikiPageWikiLinkText "derrick barge".
- Offshore_construction wikiPageWikiLinkText "marine construction".
- Offshore_construction wikiPageWikiLinkText "ocean engineer".
- Offshore_construction wikiPageWikiLinkText "ocean engineering".
- Offshore_construction wikiPageWikiLinkText "ocean platforms".
- Offshore_construction wikiPageWikiLinkText "ocean".
- Offshore_construction wikiPageWikiLinkText "off-shore".
- Offshore_construction wikiPageWikiLinkText "offshore construction".
- Offshore_construction wikiPageWikiLinkText "offshore cranes".
- Offshore_construction wikiPageWikiLinkText "offshore installations".
- Offshore_construction wikiPageWikiLinkText "offshore oil and gas industry".
- Offshore_construction wikiPageWikiLinkText "offshore structure".
- Offshore_construction wikiPageWikiLinkText "offshore structures".
- Offshore_construction wikiPageWikiLinkText "offshore technology".
- Offshore_construction wikiPageWikiLinkText "offshore".
- Offshore_construction wikiPageUsesTemplate Template:Convert.
- Offshore_construction wikiPageUsesTemplate Template:Ocean_energy.
- Offshore_construction wikiPageUsesTemplate Template:Refimprove.
- Offshore_construction wikiPageUsesTemplate Template:Reflist.
- Offshore_construction wikiPageUsesTemplate Template:Technology.
- Offshore_construction wikiPageUsesTemplate Template:Use_dmy_dates.
- Offshore_construction subject Category:Coastal_construction.
- Offshore_construction subject Category:Offshore_engineering.
- Offshore_construction hypernym Installation.
- Offshore_construction type MilitaryStructure.
- Offshore_construction type Coast.
- Offshore_construction type Discipline.
- Offshore_construction comment "Offshore construction is the installation of structures and facilities in a marine environment, usually for the production and transmission of electricity, oil, gas and other resources.Construction and pre-commissioning is typically performed as much as possible onshore.".
- Offshore_construction label "Offshore construction".
- Offshore_construction sameAs Q2016031.
- Offshore_construction sameAs Offshorebauwerk.
- Offshore_construction sameAs m.01bg1x.
- Offshore_construction sameAs Q2016031.
- Offshore_construction wasDerivedFrom Offshore_construction?oldid=646149202.
- Offshore_construction depiction Kentish_Flats_185488397_729bb056f4_o.jpg.
- Offshore_construction isPrimaryTopicOf Offshore_construction.