Listed by Authorized Dealer
2021 MJM Yachts 53Z For Sale
West Palm Beach, Florida
$1,800,000
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CI SEA is a late model 2021 MJM 53z, designed by Doug Zurn and proudly built by Boston Boatworks. The 53z is the Downeast inspired flagship of the MJM line and features expansive single-level entertainment spaces between the pilothouse and aft decks, luxury private accommodations for four, impeccable engineering and construction quality; and truly impressive performance - all key attributes for the discriminating buyer.
The current owners acquired CI SEA in 2022 when almost new, and they have spared absolutely no expense in maintaining and updating this impressive yacht. Recent upgrades include new updated Mercury quad outboards with extended warranties, all new Garmin nav electronics, canvas, fabrics throughout, aft deck teak sole, deck non-skid and much, much more as noted herein. Without a doubt, one will be duly impressed with her condition and extensive features upon inspection.
INTERIOR
The interior features finely crafted cherry joinerwork including cherry paneled or louvered cabinet doors, solid drawer fronts, and solid trim throughout, finished off in satin varnish. Large surfaces are optional varnished cherry veneer. Cabin soles are gloss teak with wenge inlays for a sharp look, with removable soft white overhead panels. There are also custom removable cabin sole covers in a laid teak deck pattern.
The décor details for CI SEA were tastefully updated in 2024 including custom fitted bedspreads, mattress covers, shams and accent pillows for each cabin. There are also numerous new throw pillows for the pilothouse and aft cockpit.
Two steps down the companionway from the pilothouse brings one to a generous galley to port with the private guest cabin starboard and day/guest head with shower. The spacious full-beam master cabin with private access ensuite head and shower is forward.
GALLEY
Corian countertops with recessed sink, cutting board cover and pullout faucet
(3) Flatware and utensil drawers with organizer trays
Vitrifrigo stainless 5.5 cu ft. 2-drawer refrigerator
Isotherm freezer compartment forward with top access
Dedicated drop-front trash bin under counter forward
Under-counter storage locker aft for large pots/pans and cleaning supplies
Wolf 2-burner induction cooktop
Breville toaster oven
Extended shelf with storage cabinets and grab-rail fiddle above galley
Skylight hatch and opening portlight to maximize light and ventilation
GUEST CABIN
Double berth with memory foam mattress covered in UltraLeather
Fold-down desk
Upholstered reading chair with arm rests
Side table with drawers and reading lamp
Large, fixed hull portlight with shade, opening portlight and overhead hatch with screen and shade
Private access to guest/day head
FORWARD CABIN
Fixed island queen berth with memory foam covered in quilted Ultrasuede
(4) Below-berth storage drawers
Storage shelves outboard berth each side
Cherry framed forward bulkhead with (2) recessed bookcases and double access doors to large forepeak anchor locker
Reading chair with arm rests upholstered with UltraLeather
Cherry desk/dressing table
Hanging lockers each side with storage shelves above
Private head and ensuite shower
Full-length dressing mirror on forward face of entry door
(2) Fixed hull portlights w/ shades, opening cabin port, and (2) large cabin top hatches with screens and shades for enhanced light and ventilation
ENSUITE OWNER AND GUEST HEADS WITH SHOWERS
Corian counter with white Corian oval sink
Glass enclosed shower with seat
Dometic electric toilet with freshwater flush
Under-sink storage locker
Towel rings and hooks
Floor drain to gray water overboard system
Hanging locker in guest head
Overhead hatch and opening portlight w/ screens and shades
PILOTHOUSE AND AFT COCKPIT
The spacious pilothouse is the primary operating and entertainment space – fully enclosed for efficient climate control and quiet running underway. The opening windshields, side windows and rear door and window provide a complete outdoor feel when desired. There is multiple seating including helm and passenger seats, U-shaped seating with table to starboard, and a full-length settee to port.
The Pilothouse leads aft on one level to the cockpit area that features a fixed settee, and two additional matching movable seats surrounding a gloss varnish teak table. Access to the dock is easy with side entry doors each side, and transom doors leading down to the swim platform each side.

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What This Boat Comes With
Information on this listing is provided in good faith by YachtWay and the listing broker/dealer, but accuracy is not guaranteed. All details are subject to change and buyers should independently verify specifications, condition, and availability before purchase.
Range Calculator
By YachtWaySet point A and point B on the map to plan a trip. Estimates use this hull's fuel curve, quad Mercury Verado 400 V10 and a 910 gal fuel tank.
This is an estimate based on available data and is intended for reference purposes only — not a guarantee of real-world performance. Actual range depends on load, sea state, and conditions.
Yacht Financing
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Rates from 6.99% APR, updated with the market. Your rate depends on your credit profile and lender match.
Yacht Insurance
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Deck Layout
Age
Built in 2021. Build year and production period shape the asking price through age of systems, styling and the equipment fitted as standard.
Engine
255 hours on quad Mercury Verado 400 V10. Engine hours, service history and configuration are the largest mechanical factors in an asking price.
Options and features
Joystick, Onboard WiFi, and TV are fitted. Optional equipment, refits and onboard features are usually reflected in the asking price.
Price history
Listed on YachtWay at $1,800,000 on Oct 11, 2026. On-platform asking prices only.
Other market factors
Location, tax and duty status, condition, service history and how many comparable hulls are for sale all move the asking price.
2021 MJM Yachts 53Z
$1,800,000