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{{Short description|Luxembourgish-domiciled subsea engineering, construction, and services company}}
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{{Infobox company
| name = Subsea 7 S.A.
| logo = Subsea7.svg
| image = Seven Borealis at Limassol anchorage.jpg
| image_alt = 
| image_caption = ''Seven Borealis'' pipelay and heavy lift vessel at anchor off Limassol, Cyprus.
| type = [[S.A. (corporation)|Société Anonyme]]
| traded_as = {{ose|SUBC}}
| predecessor = [[Acergy|Acergy S.A.]]<br />Subsea 7, Inc
| foundation = 2002
| location = [[Sutton, Greater London]], [[United Kingdom|United&nbsp;Kingdom]]<ref name="Subsea 7 website">{{cite web |url=http://www.subsea7.com/en/contacts/offices.html|title=Subsea 7 Website|publisher=Subsea 7 |access-date=13 April 2017}}</ref>
| key_people = [[Kristian Siem]] <small>([[Chairman]])</small>, John Evans <small>([[chief executive officer|CEO]])</small>
| area_served = Worldwide
| industry = [[Engineering]]
| services = [[Offshore (hydrocarbons)|Offshore]] [[engineering]], [[construction]], and [[project management]] for the [[energy industry]]
| revenue = {{Increase}} US $6.297 billion <small>(2013)</small><ref name="AR2013">{{cite web |url=http://www.subsea7.com/content/dam/subsea7/documents/publications/annualreport/Subsea7_AnnualReport2013.pdf |title=Annual Report 2013 |publisher=Subsea 7 |access-date=7 September 2013}}</ref>
| operating_income = {{Decrease}} US $573.4 million <small>(2013)</small><ref name="AR2013" />
| net_income = {{Decrease}} US $439.9 million <small>(2013)</small><ref name="AR2013" />
| assets = {{Increase}} US $10.357 billion <small>(2013)</small><ref name="AR2013" />
| equity = {{Increase}} US $6.612 billion <small>(2013)</small><ref name="AR2013" />
| num_employees = 9,800 <small>(2015)</small>
| subsid = *4Subsea<ref name="subsidiaries">{{Cite web |title=Subsea7 Group |url=https://www.subsea7.com/en/our-business/subsea7-group.html |access-date=2024-11-16 |website=subsea7 Corporate2018 |language=en}}</ref>
*Seaway 7<ref name="subsidiaries"/>
*Xodus Group<ref name="subsidiaries"/>
| homepage = {{URL|http://www.subsea7.com}}
}}
'''Subsea 7 S.A.''' (stylised as '''Subsea7''') is a [[Luxembourg]]ish [[Multinational company|multinational]] services [[companies|company]] involved in [[Subsea (technology)|subsea]] [[engineering]] and [[construction]] serving the offshore [[energy industry]].<ref>[https://www.edumaritime.net/maritime-technical-services-career/subsea-7-sa Subsea 7 Career & Training]</ref> The company is registered in [[Luxembourg]] with its headquarters in [[London]].<ref>{{cite web |last1=Website |first1=Subsea7 |title=About Us |url=https://www.subsea7.com/en/about-us.html |website=subsea7 Corporate2018 |access-date=13 April 2023 |language=en}}</ref> Subsea 7 delivers offshore projects and provides services for the energy industry.

Subsea7 makes offshore energy transition feasible through working on lower-carbon oil and gas and by providing services for the growth of renewables and other emerging energy industries.

==History==
The company was formed by the January 2011 [[Mergers and acquisitions|merger]] of two predecessor companies, [[Acergy|Acergy S.A.]] and Subsea 7, Inc.<ref>{{Cite journal |title=Acergy and Subsea 7 Agree to Combine |url=https://www.subsea7.com/content/dam/subsea7-corporate2018/Documents/combination-materials/121_06_10_agreetocombine.pdf.downloadasset.pdf |journal=Subsea 7 |pages=5}}</ref><ref>{{Cite journal |title=Anticipated acquisition by Acergy SA of Subsea 7 Inc |url=https://assets.publishing.service.gov.uk/media/55702d84ed915d15bb000024/Acergy-SubSea_FTD.pdf |journal=[[Office of Fair Trading]] |pages=29 |via=[[Government of United Kingdom]]}}</ref>

Acergy was founded in 1970 as Stolt Nielsen Seaway, a division of the [[Norway|Norwegian]] [[Stolt-Nielsen|Stolt-Nielsen Group]] offering divers for the [[Hydrocarbon exploration|exploration]] of the [[North Sea]]. After a series of acquisitions, including [[Compagnie maritime d'expertises|Comex Services]] of [[France]] in 1992 and [[Houston]], [[Texas]]–based Ceanic Corporation in 1998, the company changed its name to Stolt Offshore in 2000. Five years later Stolt-Nielsen [[Corporate spin-off|spun out]] the company as an independent business listed on the [[Oslo Stock Exchange]] and [[NASDAQ]]. The firm renamed as Acergy in March 2006.

Subsea 7, Inc. was the result of a series of mergers between DSND Offshore AS, [[Halliburton|Halliburton Subsea]], Subsea Offshore and Rockwater over an extended period, with Rockwater and SubSea merging in 1999 to form Halliburton Subsea, and the resulting company operating as a 50/50 joint venture with DSND in 2002 with the name Subsea 7.<ref name="evolution" /> Halliburton exited the joint venture in November 2004. The company was listed on the [[Oslo Stock Exchange]] in August 2005 following its [[restructuring]] the same year.<ref name="evolution">{{cite web|url=http://www.subsea7.com/en/about-us/who-we-are/history.html|title=Company evolution|publisher=Subsea 7 website|access-date=2009-05-13}}</ref>

On 21 June 2010 the combination of Acergy S.A. and Subsea 7 Inc. was announced and was completed on 7 January 2011. The new entity took the Subsea 7 name while retaining Acergy's Luxembourg [[Domicile (law)|domicile]] and operational headquarters in London.<ref>{{cite news|last=Bhatia|first=Meera|author2=Stigset, Marianne |title=Acergy Agrees to Acquire Subsea 7 for $2.5 Billion|url=http://www.businessweek.com/news/2010-06-21/acergy-agrees-to-acquire-subsea-7-for-2-5-billion-update3-.html|archive-url=https://web.archive.org/web/20100710013033/http://www.businessweek.com/news/2010-06-21/acergy-agrees-to-acquire-subsea-7-for-2-5-billion-update3-.html|url-status=dead|archive-date=July 10, 2010|access-date=7 July 2010|agency=[[Bloomberg L.P.|Bloomberg]]|newspaper=[[Bloomberg Businessweek]]|date=21 June 2010}}</ref> The chairman and [[Chief executive officer|chief executive]] roles were filled by Kristian Siem and Jean Cahuzac, who had previously held the same roles at Subsea 7 and Acergy respectively.

== Presence==
[[File:SUTTON, Surrey, Greater London - Subsea 7 office building (3).jpg|thumb|260px|The principal executive office in [[Sutton, London]]]] 
The current [[headquarters]] for Subsea 7 is located at 40 Brighton Road, [[Sutton, London]].<ref name="Subsea 7 website">{{cite web |url=http://www.subsea7.com/en/contacts/offices.html|title=Subsea 7 Website|publisher=Subsea 7 |access-date=13 April 2017}}</ref>
{| class="wikitable sortable"
|+
! colspan="4" |Subsea 7 global offices
|-
!Africa
!Americas
!Asia/Oceania
!Europe
|-
|{{ANG}}
|{{BRA}}
|{{AUS}}
|{{FRA}}
|-
|{{Flag|Egypt}}
|{{Flag|Mexico}}
|{{Flag|Indonesia}}
|{{Flag|Luxembourg}}
|-
|{{Flag|Ghana}}
|{{Flag|United States}}
|{{Flag|Malaysia}}
|{{Flag|Norway}}
|-
|{{Flag|Mozambique}}
|{{CAN}}
|{{Flag|Russia}}
|{{Flag|Portugal}}
|-
|{{Flag|Nigeria}}
|
|{{Flag|Saudi Arabia}}
|'''{{Flag|United Kingdom}}'''
|-
|
|
|{{Flag|Singapore}}
|
|-
|
|
|{{Flag|United Arab Emirates}}
|
|-
|
|
|{{Flag|Turkey}}
|
|-
|
|
|{{Flag|Azerbaijan}}
|
|}

== See also ==
* [[List of oilfield service companies]]

==References==
{{Reflist}}

==External links==
*{{Official website|http://www.subsea7.com}}

{{OBXList}}
{{Authority control}}

[[Category:Engineering companies of Luxembourg]]
[[Category:Engineering companies of the United Kingdom]]
[[Category:Companies listed on the Oslo Stock Exchange]]
[[Category:Companies formerly listed on the Nasdaq]]
[[Category:Energy engineering and contractor companies]]
[[Category:Offshore engineering]]
[[Category:Oilfield services companies]]
[[Category:Multinational companies headquartered in Luxembourg]]
[[Category:Multinational companies based in the City of London]]