[Robert A Cook PE]

4 turbines?

Maybe 2 for propulsion, two for turbine generators? That’s a fairly standard layout.

4 for TG’s, plus a electric prop? That would be quieter, but a little bit heavier. We didn’t have that setup while Rickover was controlling ER’s.

[rottndog]

Actually, they did try an electric propulsion boat, but they only made one, as it didn’t work so well. I don’t remember which boat (I believe it was a 637).

[NucSubs]

That was standard.