PORTLAND, Maine (AP) — A shipyard worker who set fire to rags aboard a nuclear submarine because he wanted to go home was sentenced to a little more than 17 years in federal prison Friday for the blaze that transformed the vessel into a fiery furnace, injured seven people and caused about $450 million in damage.

Casey James Fury also was ordered to pay $400 million in restitution by a judge who weighed his lack of criminal record and the severity of the fire before imposing a 205-month prison sentence.

The 25-year-old Fury, formerly of Portsmouth, N.H., pleaded guilty to setting the May 23 fire while the USS Miami was undergoing a 20-month dry dock overhaul at Portsmouth Naval Shipyard in Kittery.