---

Nuclear Submarines

Indeed they do. If we are to maintain our posture of continuous at-sea deterrence, we will need to begin replacing the current fleet in the late 2020s. That is not primarily to do with the lives of the

reactors or the cores; it is to do with the life expectancy of other components of the submarines that cannot effectively be replaced. The final decision to replace the Vanguard-class submarines with Successors will be made in 2016.