The Kulluk and Noble Discoverer set sail for the Arctic today from Vigor Industrial’s Seattle shipyard, following completion of extensive environmental and safety upgrades by its commercial ship repair subsidiary, Vigor Marine. The Kulluk, an ice-classed semi-submersible drill rig measuring 266’ x 230’, arrived at Vigor’s Seattle yard in July, 2011. Following the work done by Vigor Marine teams, it will operate with zero discharge in the Beaufort and Chuckchi Seas. Everything down to the sink water will be captured and stored.