sioff industry shipping founded 2005 headquarters cayman islands area served global services offshore vessels number of employees 1 078 2012 website www.siemoffshore.com siem offshore is an international offshore and subsea shipping company registered on the cayman islands with its main offices in kristiansand norway . the company s fleet includes 50 vessels of which 15 are under construction . the fleet includes platform supply vessels psvs anchor handling tug and supply vessels ahts multipurpose field and rov support vessels mrsvs offshore subsea construction vessels oscvs well intervention vessels wivs scientific core drilling vessels scdvs and crew transport vessels ctvs . furthermore the subsidiary siem consub siem offshore do brasil operates additional vessels in brazil . siem industries 33.7 % and ace crown international 19.4 % are the largest owners . history edit the psv siem symphony near stavanger norway the company was founded on 1 july 2005 as a spin off from subsea 7 . in september the same year it bought rovde shipping and has since ordered a substantial number of new vessels primarily platform supply anchor handling tug and supply as well as offshore subsea construction and well intervention vessels . in 2011 the company expanded into the contracting business when five oceans services was acquired and subsequently renamed to siem offshore contractors soc . soc is specialized in the installation repair and maintenance of submarine cable systems with a regional focus on the renewable energy sector in europe and the offshore oil and has sector in the middle east . this article related to a norwegian ship transport company is a stub . you can help wikipedia by expanding it . v t e retrieved from https en.wikipedia.org w index.php title siem offshore & oldid 668752931 categories shipping companies of norwaysupply shipping companiescompanies established in 20052005 establishments in norwaycompanies listed on the oslo stock exchangenorwegian shipping company stubshidden categories all stub articles navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages add links this page was last modified on 26 june 2015 at 12 18 . text is available under the creative commons attribution sharealike license ; additional terms may apply . by using this site you agree to the terms of use and privacy policy . wikipedia is a registered trademark of the wikimedia foundation inc. a non profit organization . privacy policy about wikipedia disclaimers contact wikipedia developers cookie statement mobile view