Maybe time for a rethink about the whole putting dangerous nuclear reactors in submarines idea? Germany and Japan have taken admirable steps in the direction of cutting down usage of civilian nuclear power but neither are nuclear states or are well known for their outgoing defence policies. If such prudent policies can be adopted in regards to civilian power use, which has the potential to be an economic and workable alternative to fossil fuels, then surely the US and British naval forces could give up the use of these submarines that simply allow for provocative militaristic posturing and risks environmental and diplomatic disaster?
Similarly the prevalence of the even more terrifying nuclear capable submarines is shown by this article in the American Naval War College Review journal which focusses on the ubiquity of such marine armaments in the deterrence policies of nuclear armed nations. A very interesting read about naval diplomacy between India and Pakistan, a simmering conflict that seems to have barely warranted any mainstream news coverage in recent years.