Standard deckplan of very spacious 55SX features a U-settee to port surrounding a teak high-low table. A second, smaller settee sits just forward on a raised platform that provides outstanding visibility. A standard Stidd helm seat sits to starboard; abaft of this is a long cabinet with storage, minibar, and an entertainment center with pop-up TV.

Forward arrangements in this deckplan include a large down galley to port, across from a starboard-side guest stateroom with two twin berths and single-door entry. Forward to port is the guest head with shower stall, while to port sits a companionway closet holding a freezer and washer/dryer unit. Farthest forward is the master stateroom with queen island berth, and an en-suite head with enclosed shower.