Oil & Gas New jack-up for North SeaLONDON: Workfox has taken delivery of the new-build jack-up drilling rig, Seafox 7, under an exclusive management agreement with Seafox Contractors. May 5th 2008, 2:49 am 1 min read Facebook An icon of a facebook f logo. LinkedIn An icon of the LinkedIn logo. Twitter An icon of the Twitter logo. LONDON: Workfox has taken delivery of the new-build jack-up drilling rig, Seafox 7, under an exclusive management agreement with Seafox Contractors.