[Lower Deck]

Isn't it a "Ballistic Missile" submarine?

No. Four of the Ohio boats were converted to carry Tomahawks instead of ballistic missiles.

[Sergio]

Cool, thanks for the clarification.

Here's what Wikipedia (I know, not the best source.) says about the Florida.

USS Florida, an Ohio-class cruise missile submarine, is the sixth ship of the United States Navy to be named for the 27th state. She was commissioned with the hull designation of SSBN-728; with her conversion to a cruise missile submarine, from a ballistic missile submarine, she was re-designated SSGN-728. - Wikipedia