The standard salon layout for the 45SX features a U-settee to port surrounding a teak high-low table. Opposite sits a straight settee, just aft of the Stidd helm seat. Also in the standard arrangement, a bench seat is located opposite the helm chair, fronted by a built-in chart table.

Forward arrangements in this deckplan include a down galley to port, across from a starboard-side guest stateroom with two twin berths and single-door entry. Farthest forward is the master stateroom with queen island berth; the en-suite head features an enclosed shower, and a second door to the companionway for guest access.