Lagoon 450S (Caribbean)

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Price Reduced! $595,000 (USD)
Duty Paid
Location: Cole Bay, Sint Maarten (Caribbean)
S/V Mystic is a Cole Bay, Sint Maarten based 2018 Lagoon 450 S (SporTop) Owner Version Catamaran For Sale By Owner
This catamaran owner requires financial settlement only. No trades.

Mystic is a US-flagged, 2018 Lagoon 450 S (SporTop) Owner Edition catamaran. She has been impeccably maintained and regularly updated from new by her experienced owner and has many upgrades, including 57 HP Yanmar engines, factory installed ComfortCruise Package, full helm/cockpit enclosures, genset, watermaker, electric heads, solar panels, dinghy, watersports equipment, and much more.

The Lagoon 450 S Owner’s Version is a comfortable blue-water cruising catamaran designed for a couple or family who want the helm area to be more closely connected to the cockpit and main salon. The 450’s SporTop’s side-positioned helm provides excellent all-round visibility and a direct line of sight to the cockpit and salon. With its elegant design, solid construction, and impressive sailing performance, the Lagoon 450 S offers an exceptional experience for extended cruising. Featuring a large owner’s cabin with an adjacent office space/sitting area and large private bathroom, two guest cabins with their own bathrooms, and a spacious saloon and galley with easy access to the expansive aft deck.

The original owners are accomplished offshore sailors who have been cruising Mystic through the Virgin Islands, New England, Florida, and the Bahamas since taking delivery of the boat in late 2017. They have reluctantly decided to sell Mystic because family and business commitments make it difficult for them to spend as much time on the boat as they would like. Mystic is currently in St. Maarten and ready for its next adventure.


“Mystic is our second Lagoon catamaran (the first was a Lagoon 410), and we continue to love the brand. Mystic has been the perfect platform for us to make lasting memories with friends and family. We have traveled many thousands of miles in safety and comfort and believe it is the best 45′ cruising catamaran ever made. The boat needs only the new owners’ personal gear and provisions and she is ready to go cruising!”


  • One private owner from new
  • Factory installed “ComfortCruise Package”
  • Upgraded 57HP Yanmar engines
  • Lagoon-certified bulkhead repairs completed by Multitech Marine, FL in 2022
  • Full helm/cockpit enclosure (new in 2021)
  • Dark grey exterior cushions with custom sun loungers (new in 2021)
  • Air conditioning in all cabins and main salon
  • Isotherm Drawer Fridge in cockpit
  • Electric winches at helm station and for Davits
  • Solar panels on custom bracket on aft end of cabin roof
  • 3-blade folding propellors
  • 55kg Mantus primary anchor with all-chain rode and Delta secondary anchor with chain/rope rode
  • All standing and running rigging professionally inspected and serviced in 2022
  • Furling line, reefing lines, main halyard, dinghy davit line replaced in 2022/23
  • Engines and generator serviced recently
  • Both sail drives serviced in 2022
  • New Victron 3000W inverter installed in 2023
  • Starlink, PredictWind datahub, and IridiumGo!
  • Splendide Washer/Dryer
  • UV water filtration
  • Fully equipped galley with counter top convection oven, vacuum sealer, Nespresso, electric kettle, instant pot, dishes, barware, pots and pans
  • 11' RIB with 15HP Yamaha Outboard
  • Sports equipment, including 2 folding electric bikes, 2 Hobie kayaks, 1 rigid SUP, dive tank and regulator, and fishing gear
Catamaran Name:S/V Mystic
Model:450 S (SporTop) Owner Version
Year Built:2018
Builder:Lagoon (France)
Designer:Marc Van Peteghem / Vincent Lauriot Prevost
Construction:Infusion molded with solid glass below the waterline. Balsa core hull and deck.
Loa:13,96m / 45'10''
Lwl:13,96m / 45'10''
Beam:7,84m / 25'9''
Headroom:6’ 8”
Draft:1,30m / 4'3"
Displacement:15,10t / 33296 Lbs
Mast Height:23,05 m / 75'8''
Speed:7 kts
Fuel Tanks:2 125 Gallon Tanks
Water Tanks:2 100 Gallon Tanks
Holding Tanks:100 Gallons total ( between 3 tanks)
Galley Location:up
Engines:2 Yanmar 57HP diesel
Engine Hours:2170
Sails:In-mast Furling Mainsail
Furling Jib
Asymmetrical spinnaker

Layout Diagram

Catamaran Inventory

Hull & Deck

  • The Lagoon 450 S SporTop is ideal for couples or families who want the helm area to be more closely connected to the cockpit and main saloon. The side-positioned helm provides excellent all-round visibility and a direct line of sight to the cockpit and salon.
  • Hot/cold deck shower on starboard
  • S/s telescopic swim ladder with fixed handle on starboard
  • Storage on side of transom (port and starboard)
  • Large cockpit protected by a hard top bimini
  • U-shaped bench seat to port with storage locker
  • Removable polyester cockpit table that seats 8/10 people
  • Isotherm drawer fridge to starboard
  • 1 Lounger with locker in the seat, to starboard
  • Waste bin with upper access and lateral door on port side
  • Storage locker with top access (70 L / 18 US gal) and scupper on port side
  • Magma Catalina Grill with external fiberglass propane tank
  • The helm station is designed for short-handed sailing, with lines, sheets, and electric winches all within easy reach. The lower boom of the 450 S allows for better access to the mainsail while lowering the center of gravity and producing a more stable and comfortable ride .
  • Composite staircases for access from the cockpit
  • Full helm enclosure new in 2021
  • Double helm seat
  • Leather covered s/s steering wheel 800mm (31”) diameter
  • Engine throttle and panel
  • Console for screen and instrumentation
  • Halyard and sheet storage
  • S/S & Teak stairs to cabin top
  • Lounging mattresses on cabin top
  • U-shaped bench seating area
  • Storage locker under the starboard side seat, with access to generator
  • Storage locker under the port side seat
  • Storage locker under the central seat
  • Trampoline (nylon)
  • Bowsprit Prod for Code 0 and Asymmetric Spinnakers
  • Locking bow lockers with access through flush deck LEWMAR T60 hatches
  • Wooden flooring
  • Lighting
  • Cushions to convert Bow Lockers into berths


  • Twin 57HP Yanmar marine diesel engines (each engines has 2166 hours)
  • 13kw Onan Generator (5,121 hours)
  • Both engines and generator had oil, oil filter, and fuel filters changed in early 2024 (Port 1993 hrs, Stb 1997.5 hrs, Generator 4979.5 hrs). Both fuel filters were changed on the starboard engine again in early February 2024 and only have about 4 hours on them.
  • 2 aluminum tanks of 2 x 520 liters / 137 US gal (emptied and polished in early February 2024)
  • Fuel filter system
  • Fuel shut off valve
  • Gauge at the general control panel on touch screen
  • 3-blade folding propellers
  • Both sail drives serviced in 2022


  • B&G Zeus3 12” Chartplotter
  • 2 x Triton displays
  • B&G Autopilot controller
  • Engine instruments
  • Quick Windlass remote
  • B&G VHF Radio w/AIS
  • Fusion Stereo
  • 4G Broadband radar
  • Cellular modem/router with masthead antenna
  • Wi-Fi antenna
  • Starlink
  • 2 EPIRBS
  • 2 VHF handheld radios
  • PredictWind datahub
  • IridiumGo!
  • Fusion MS BT-100 stereo with 2 speakers inside the main salon and 2 in the outside aft deck area.


  • 110 volt system
  • 900W solar
  • 720AH AGM batteries (successfully load tested in 2022)
  • Victron 3000W inverter - 2023
  • Recessed 12V LED spotlights in ceiling
  • 12V LED reading light next to bunks
  • 12V LED chart table light
  • 12V lighting in engine compartment
  • LED navigation lights


  • 11' Limin dinghy
  • 15HP two-stroke Yamaha
  • All electric winches for dinghy davits with foot buttons at swim-step
  • 316 Stainless chain and locks
  • Quick disconnect 5 Gallon fuel tank


  • 100L Dessaltor Duo watermaker
  • Whole boat UV water filtration and Seagull under-sink filter in galley
  • Dometic portable fridge/freezer in cockpit with custom 12v outlet
  • Air conditioning in all cabins and main salon
  • Washer/Dryer
  • 3 x 46 US gal fresh water tanks with gauge at the electrical panel
  • Fresh water circuit with 1 main water pressure pump in the port passageway
  • 16 US gal electric water heater, 230V/engine heat exchanger
  • 100L/Hour Dessaltor Watermaker
  • Whole boat UV water filtration and Seagull under-sink filter in galley
  • Three (3) Electric Flush Jabsco Heads
  • Three (3) 20 gal holding tanks
  • 1 manual bilge pump in each hull with cockpit pump
  • 1 automatic submerged bilge pump per hull
  • 1 manually activated non-submerged bilge pump per hull


  • 6-person life raft, inspected and recertified in 2022
  • Two drogues (with brand new bridle) for offshore use
  • Complete offshore ditch bag (4-person for ~ 6 days)

Activities and Spare Parts

  • 2 x Electric Folding Bikes
  • 2 x Hobie Mirage Pedal Kayaks
  • 1 x rigid SUP
  • Dive tank and BC w/ Regulator and dive computer
  • Full inventory of fishing gear
  • Full inventory of spares/tools


  • S-Model hard top over helm
  • Lagoon-certified bulkhead repair done at Multitech Marine, FL
  • Full helm/cockpit enclosure new in 2021
  • Brand new exterior cushions in 2021 with custom sun loungers
  • Full inventory of spares/tools and parts


  • The Lagoon 450 S Owner’s Version is known for its thoughtful layout, exceptional headroom (6’ 4”), and comfortable appointments. The interior of the Lagoon 450 S is spacious and light, with excellent visibility through the numerous windows and cockpit door. The u-shaped galley is to port, with plenty of counter space, a large single tub sink, and a 3-burner propane stove and oven. The refrigerator and freezer are conveniently located in the galley & salon, with a second fridge in the cockpit.
  • The owner’s suite is in the starboard hull and features a queen-sized island berth aft and a large private head forward. A sliding door at the base of the steps creates privacy between the hull and the salon.
  • The two guest cabins are in the port hull and feature queen beds with generous storage and en-suite heads, each with separate shower stall & electric flush toilet.
  • Interior woodwork in Alpi Walnut plywood
  • Asburgo laminated floor
  • Fabric-covered plywood ceiling panels or fiberglass liners in cabins and bathrooms
  • Fabric-covered plywood on hull liner in cabins
  • Polyester ceiling and fabric-covered plywood in the saloon
  • Sliding door and window with lock for access to the cockpit
  • Large varnished saloon table that converts to a berth
  • 6-person L-shaped bench seat to starboard
  • Lockers under seat bench
  • Various high and low storage
  • Fabric covered steel mast support strut
  • 2 opening portholes in the front window
  • 1 opening porthole in the port window
  • U-shaped galley, to port
  • Corian® Warm Grey countertop
  • Double s/s sink with custom faucet
  • Storage under sink
  • 3-burner gas stove
  • Countertop convection oven
  • 12V 130L / 34 US gal fridge with wooden front door
  • Storage unit with drawers (available space for dishwasher)
  • Air fryer
  • Microwave
  • Vacuum sealer
  • Nespresso coffee maker
  • Electric kettle
  • Fully stocked with cookware, dishes, barware, utensils, and pots and pans
  • Sliding door with locker
  • 1 double bed with lateral access (2.05 x 1.60 m / 6’9’’x5’3’’)
  • 2 bed nightstands with storage
  • 1 under bed drawer
  • 2 low-level cupboards at the foot of the bed
  • 2-seater sofa with storage
  • Sideboard adjacent to the sofa
  • Desk with flap
  • Large storage cupboard with 4 doors and 1 bookshelf – outboard side
  • 3 opening deck hatches
  • 1 opening portholes
  • 1 fixed hull window in Plexiglas white silkscreen printing 910x423 mm / 3’x1’5’’
  • Composite countertop and sink
  • Hot/cold mixer tap
  • High cupboards with 3 mirrored doors
  • Low-level cupboards 4 doors under the sink
  • Separate shower with Plexiglas glass door
  • Jabsco Electric Flush toilet
  • High-level cupboards 2 doors
  • 1 fixed hull window in Plexiglas black silkscreen printing 910x423 mm / 3’x1’5’’ with 1 integrated opening deck hatch
  • 1 opening porthole
  • 1 fixed hull window in Plexiglas white silkscreen printing
  • 1 double bed with lateral access (2.05 x 1.60 m / 6’9’’x5’3’’)
  • 2 bed nightstands, one with storage
  • 2 under bed drawers
  • 1 full-height wardrobe – outboard side
  • 1 opening deck hatch
  • 1 opening porthole
  • 1 fixed hull window in Plexiglas white silkscreen printing
  • 1 double bed with lateral access (2.05m x 1.60m head x 1.10 foot / 6’9’’x5’3’’x3’7’’)
  • 1 under-bed drawer
  • 1 large mirror above bed head
  • 1 cupboard with wardrobe (upper part) and shelves (lower part) – inboard side
  • 1 storage niche with on central shelf – outboard side
  • Bookshelves on 2 levels
  • 1 opening deck hatch
  • 1 opening porthole
  • 1 fixed hull window in Plexiglas white silkscreen printing
  • Composite countertop and sink
  • Hot/cold mixer tap
  • High cupboards with 2 mirrored doors
  • Separate shower with Plexiglas door
  • Jabsco Electric Flush Toilets
  • 1 opening deck hatch
  • Both forward bow lockers convert to berths with cushions


  • CE Certification: A:12 - B:14 - C: 20 – D: 30
  • Polyester and high quality anti-osmotic resin
  • Hull, deck and coachroof laminated by infusion
  • Balsa core hull, solid laminate under waterline, white gelcoat
  • Balsa core bridge deck and deck
  • Laminated marine plywood bulkheads
  • Lagoon-certified bulkhead repairs were done by Multitech Marine, FL in January 2022

Rigging & Sails

  • Three-stayed aluminum mast with mainsail ball-bearing track system
  • Aluminum boom
  • 2 encased cap shrouds
  • 2 shroud chainplates
  • 2 forestay chainplates
  • 1 genoa forestay with manual furler
  • Adjustable lazy-jacks
  • Deck light on mast
  • Factory-installed bowsprit and spinnaker winches
  • All electric winches at helm
  • All standing and running rigging professionally inspected and serviced in 2022
  • Furling line, reefing lines, and main halyard replaced in 2022
  • Dinghy Davit line replaced in 2023
  • Incidence Fully-Battened Dacron Square Top Mainsail – 2018
  • Incidence Furling Dacron Genoa w/UV Strip – 2018
  • Asymmetric spinnaker in sock – 2020

Catamaran Photos