Also we can use the situation of Russia to get some technology from them especially nuclear power of submarines or surface ships.The US, the UK and France are all tied togather as a collective west. When the US develops a technology orhers will not duplicate it, they just simply share at a cost. We don't belong to the group so we develop ourselves. It shouldn't be hard as railguns that we have already worked on supposedly use similar technology.
We can have a modern version of Alfa class submarine.