There have been some announcements on the repair schedule for the Ekaterinburg Delta IV submarine, which was seriously damaged by fire a couple of weeks ago. These reports confirm expectations that because of the fire, the submarine will be sent for its second major overhaul now, rather than in 2013 as scheduled. In addition to the regular overhaul, the outer hull will have to be repaired and the sonar apparatus replaced. The main disagreement is whether the repair will be completed in 3-4 years (i.e. by 2015 or 2016) or (if we follow Dmitry Rogozin’s tweets) by the summer of 2014. Winter ice means that the submarine will be sent to Severdvinsk in the spring and repairs will actually begin in May or June.
Two years to both repair the fire damage and complete the regular overhaul seems excessively ambitious. The Verkhoturie, the first Delta IV submarine to go for its second overhaul, is scheduled to be returned to the fleet in December 2012, 2.5 years after the overhaul began. Fixing the fire damage will take extra time, so I would imagine the 3-4 year time estimate is more likely than Rogozin’s 2 year claim.
In the meantime, the accident will likely delay the decommissioning of one or more of the three remaining Delta III submarines that are to be replaced by the soon to be commissioned Borei submarines.