Castoro Sei
{{Short description|Semi-submersible pipelay vessel}}
| {{Infobox ship begin |display title=ital}}
{{Infobox ship image |Ship image=Castoro Sei March 2011a.JPG |Ship caption=The Castoro Sei in the Baltic Sea, south-east of Gotland on contract to Nord Stream, March 2011 }} {{Infobox ship career |Hide header= |Ship name=Castoro Sei |Ship owner=Saipem |Ship operator=Saipem |Ship registry= Nassau, {{flag|Bahamas|civil}} |Ship route= |Ship ordered= |Ship builder=Fincantieri, Italy |Ship original cost= |Ship yard number=4334 |Ship way number= |Ship laid down=20 May 1975 |Ship launched= |Ship completed=1978 |Ship christened= |Ship acquired= |Ship maiden voyage= |Ship in service= |Ship out of service= |Ship identification=*Call sign C6DF4
|Ship fate=Scrapped Aliaga, May 2022 |Ship notes= }} {{Infobox ship characteristics |Hide header= |Header caption= |Ship class= |Ship tonnage={{GT|31,506}} |Ship displacement= |Ship length= {{convert|152|m|abbr=on}}{{cite web |url=http://www.saipem.it/site/article.jsp?idArticle=5399&instance=2&node=2012&channel=2&ext=template/37DueColonne&int=article/1DefaultArticolo |title=Castoro Sei |work= Saipem |accessdate=2010-03-28}} |Ship beam= {{convert|70.5|m|abbr=on}} |Ship height= |Ship draught= {{convert|15.5|m|abbr=on}} |Ship draft= |Ship depth={{convert|29.8|m|abbr=on}} |Ship decks= |Ship deck clearance= |Ship ramps= |Ship ice class= |Ship sail plan= |Ship power= |Ship propulsion= |Ship speed= {{convert|5.8|kn}}{{cite web |url=http://www.marinetraffic.com/ais/shipdetails.aspx?mmsi=308162000 |title=Castoro Sei |work=Marine Tracker |accessdate=2010-03-28}} |Ship capacity= |Ship notes= }} |
The Castoro Sei (Italian for Beaver Six) was a column-stabilized semi-submersible pipelay vessel. She had an overall length of {{convert|152|m}}, a width of {{convert|70.5|m}} and an operating draught of {{convert|7.8|to|15.5|m}}.
The Castoro Sei was equipped with 2 rotating gantry cranes of 134 tonnes capacity, three 130 tonnes pipe tensioners and a 400 tonnes abandon and recovery winch for pipelaying. She provided accommodation for 354 people.
The firing line comprises the fixed pipelay ramp, enclosed in the central housing, running along the longitudinal centreline of the vessel. It is connected to an internal and external ramp, both of which have adjustable inclination to facilitate pipelay in varying water depths. A ramp extension unit is available for use in deep water or for severe seabed conditions.
The Castoro Sei was built in 1978 by Fincantieri at Trieste yard, and was owned and operated by Saipem. Her port of registry was Nassau, in the Bahamas.
It has been used for laying a number of pipelines in the Black Sea, North Sea and Mediterranean Sea, including Blue Stream, Greenstream, Medgaz, Trans-Mediterranean, Europipe II, and BBL pipelines.{{cite web
|url = https://boskalis.com/download-center/download/eyJmaWxlVWlkIjoyODkyLCJyZWZlcmVuY2VVaWQiOjB9/f85323f3a55e39ea8089629716e053067d76f8af.html
|title= Libyan Gas Transmission System
|publisher = Royal Boskalis Westminster
|accessdate = 2009-07-29}}
{{cite news
|url = http://steelguru.com/news/index/2008/12/28/NzY3MjY%3D/Update_on_MEDGAZ_offshore_pipeline_construction_works.html
|title = Update on MEDGAZ offshore pipeline construction works
|work = Steel Guru
|date = 2008-12-28
|accessdate = 2010-03-28
|archive-url = https://web.archive.org/web/20081229041105/http://www.steelguru.com/news/index/2008/12/28/NzY3MjY%3D/Update_on_MEDGAZ_offshore_pipeline_construction_works.html#
|archive-date = 2008-12-29
|url-status = dead
|title= Europipe II fully laid
|url= http://www.statoil.com/en/NewsAndMedia/News/1999/Pages/EuropipeIIFullyLaid.aspx
|publisher= Statoil
|date= 1999-06-04
|accessdate= 2010-01-29
|archive-date= 2011-06-09
|archive-url= https://web.archive.org/web/20110609200432/http://www.statoil.com/en/NewsAndMedia/News/1999/Pages/EuropipeIIFullyLaid.aspx
|url-status= dead
{{cite press release
|title= BBL Company Offshore
|url= http://www.bblcompany.com/project-bbl/offshore
|publisher= BBL Company
|year= 2011
|accessdate= 2011-10-08
|archive-url= https://web.archive.org/web/20110917121807/http://www.bblcompany.com/project-bbl/offshore
|archive-date= 2011-09-17
|url-status= dead
}} The vessel also laid most of the Nord Stream 1 pipeline in the Baltic Sea.
{{cite news
|title= First Nord Stream pipelay vessel enters Baltic Sea
|url= http://www.baltic-course.com/eng/transport/?doc=25206
|work = The Baltic Course
|first = Alla | last=Petrova
|date= 2010-03-26
|accessdate= 2010-03-28
References
{{reflist}}
{{List of ships built by Fincantieri}}
{{Commons category|Castoro Sei (ship, 1978)}}
{{DEFAULTSORT:Castoro Sei}}