After completing a 41-month refueling overhaul the USS Louisiana (SSBN 743) has returned to Naval Base Kitsap-Bangor. The refueling will extend Louisiana’s serviceable life by twenty years. The last of the 18 boat Ohio class, the Navy plans to replace all the Ohio class Ballistic Missile Submarines with 12 new Columbia class boats with the first of those scheduled for 2031. For more on the Louisiana refueling visit this website https://www.kitsapsun.com/story/news/local/navy/2023/02/22/ohio-class-nuclear-powered-ballistic-missile-submarine-uss-louisiana-ero/69899812007/