>>63988922
>Take Typhoon Class Ballistic Missile Nuke Sub\
>Take out 12 missile tubes, place another pressure hull with a moon pool in its place
>Inserts in 8 remaining ballistic missile tubes can hold many more cruise missiles or other payloads more useful than ballistic missiles
>Replace OK-650 Reactors with two S8G Reactors from the Ohio-Class
>Overhaul turbine systems and improve sound damping
>New screws and a streamlined sail to top it off, and hopefully provide less drag and sound

Would be a great motherbase submarine for coastal operations and could be used for covert movement of high value assets. Very easily could be used as a special mission submarine for sabotage or intelligence gathering missions too.

Call it Outer Heaven (or Waterworld, kek).