Lagoon 42 (Caribbean)

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Price Reduced! $575,000 (USD)
Duty Paid
Location: St Maarten (Caribbean)
S/V Sonder is a St Maarten based 2019 Lagoon 42 Catamaran For Sale By Owner
This catamaran owner requires financial settlement only. No trades.
This seller is open to offers via CatamaranSite escrow.

UPDATE: Waxing and polishing done in April 2024. New Anchor Chain in April 2024. Owner considers delivering boat to buyers’ preferred location on US east coast or at Caribbean. 

S/V Sonder is a US flagged 2019 Lagoon 42 catamaran, owner’s version (3 cabins), offered by her original owners, husband and wife, who outfitted Sonder for a live aboard sabbatical with extended, remote, blue water cruising in mind.  The owners have spent the past 5 years sailing Sonder up and down the U.S. East Coast (from Nantucket to the Keys), to the Bahamas, Turks and Caicos, Dominican Republic, Puerto Rico, USVI, and extensively in the Windward and Leeward islands of the Caribbean.  No pets, no smokers, and never chartered, with meticulous investments in professional maintenance and care, Sonder looks almost new.

Sonder is the perfect vessel to cruise distant shores and relax in comfort at anchor.  She has the combination of fun sailing and condo like living that makes adventuring abroad very comfortable.  A VPLP design, Lagoon 42s perform very well compared to similarly sized vessels.  With her square top main and Code 0 equipped, in favorable winds and seas, Sonder often maintains 8-10 knots of speed while sailing, even while loaded down with cruising gear.

Lagoon 42s have an ingenious deck layout: The mast moved further aft and the self-tacking jib, provide ease of handling and the ability to bring all operations together in one place. An ergonomic helm station at the coachroof bulkhead, offers many advantages including direct communication with the cockpit , improved circulation forward and aft of the helm station, direct access to the coach roof with easy access to the boom, and a sturdy composite bimini with a sliding panel to ensure a good view of the sails.  Lagoon 42s also feature a cozy cockpit, with smooth curves.  A single level from the cockpit to the salon ensures excellent use of space and ease of movement on board.  A large 3 panel sliding door provides access to the interior.

In a remote anchorage, Sonder’s oversized Rocna anchor, sun shades (aft and bow), large solar capacity and lithium battery bank, an oversized and efficient generator with ample fuel capacity, all come into play to ensure comfort and safety for prolonged periods, in good or bad weather conditions.  

With the sail package, and the numerous amenities and equipment that are offered on Sonder, she is a rare, turn-key find, ready to sail remotely in the tropics worldwide, with both comfort and performance. 

Outfitted for Off Grid Capabilities

  • 1200 amps Relion Lithium batteries
  • 1820 watts of solar panels
  • 13.5k Onan Generators
  • Can run main berth AC, washing machine, hot water heater, and charge starter batteries from House Battery Bank
  • Sea Recovery ProMini 550 - 110v - 2 years old with a recently replaced new membrane
  • With Quantum Code 0 and Asymmetrical spinnaker and the fittings
  • With factory enclosure and sunshades (must haves)
  • Starlink
Catamaran Name:S/V Sonder
Year Built:2019
Designer:Van Petheghem/Lauriot Prevost
Construction:Fiberglass polyester and vinylester resin and Foam sandwhich hulls - white gelcoat. Solid glass under waterline
Loa:42 ft 5 in (12.92 m.)
Lwl:12,8 m
Beam:25 ft 3 in (7.68 m.)
Draft:4 ft 2 in (1.26 m.)
Displacement:26684 lbs / 12,104kg
Mast Height:67' 7" (20.6 m.)
Speed:Cruising Speed: 6-7 knots at 2000 rpms; Max Speed: M.speed: 9 knots
Fuel Tanks:160 Gallons
Water Tanks:80 Gallons
Holding Tanks:60 Gallons
Galley Location:Up
Engines:Yanmar 4JH57 & SD60
Engine Hours:~1150
Fuel Consumption:0.75
Sails:Incidence Main Sail, Incidence Self Tacking Jib, Quantum Code 0, and Quantum Asymetrical Spinnaker

Layout Diagram

Catamaran Inventory


  • 2019 Lagoon 42 Catamaran
  • Fiberglass polyester and vinylester resin and foam sandwich hulls - white gelcoat. Solid glass under waterline.
  • Well Maintained, Fully Loaded and Turnkey Equipped, Ready for World Cruising and Off Grid Living


  • Owner Version - 3 Cabins
  • Owner side desk, shelving, and storage
  • 1 x Double berth
  • 2 x Queen/King berths
  • All beds have under bed slats for better airflow
  • Upgraded fans in two large berths
  • 3 Showers (2 with upgraded on/off shower water drain pump switch w/out timer)
  • 3 Quiet Flush Electric Fresh Water Toilets (switch between fresh water and sea water flush as needed)
  • Toilets equipped with Commoderizor when using sea water for no smell, save fresh water and cleaner hoses
  • Installed check valve for master head to prevent back-flow
  • Holding tanks 240l – 3x 80l
  • Hot water 40l – heated by engine cooling system and electric heating element


  • Standard interior Wood in Alpi Walnut w/ Asburgo Floor
  • Curtains on Salon Door and all windows
  • Sunbrella sunscreen (light grey) inside all windows, almost invisible but blocks the sun
  • Special Upholstery in marble
  • 46" Samsung Flatscreen TV
  • Decorative pillows
  • LED Salon lighting with multiple lighting and color options controlled via a remote
  • Salon Table Cover
  • 2 upgraded Salon fans
  • Extra storage under seat
  • Custom rolling screen door


  • Galley Up - Located on Starboard Side
  • Low Wattage Microwave fixed at corner
  • 12 Volt Stainless Steel Refrigerators (Cockpit and Salon) and Top Load Freezer
  • 3 Burner Gas Stove
  • Gas Oven
  • Stainless Steel Sink with Upgraded Pullout Faucet
  • Sea Water Tap
  • Drinking Water Faucet at Sink with Seagull Filter
  • Moccamaster coffee maker and electric coffee grinder
  • Quality pots and pans, knives, silverware, dishes and glasses


  • Grey cockpit cushions
  • Full enclosure from factory
  • Sunshades from factory (altered so that sunshade and enclosure are ready to be rolled down at the same time)
  • SS Fridge - Vitrifrigo Double Drawer Frig/Freezer with Icemaker
  • Teak flooring and teak table
  • Storage rack installed in ceiling and corner for fishing poles and boat hooks
  • EPIRB mounted outside with hydrostatic release
  • Additional SS grab hand rails on Starboard and Port steps
  • Winches and handles for sailing
  • Yeti 125 cooler serves as add'l seating and storage
  • Various add'l storage solutions
  • Kuuma Grill


  • Depth sounder
  • Speed log
  • B&G Wind instruments
  • B&G Zeus3 12” Display at Helm station
  • B&G Zeus3 12” Display at Nav station
  • AIS 500 Transceiver with antenna
  • 2 VHF H60 handsets with second charger at Helm
  • 4G Radar
  • Autopilot remote
  • VHF V60
  • B&G Navigation package from Lagoon
  • Iridium Go plus exterior mounted antennae
  • StarLink satellite with router (110v) (2023)
  • Canon colour inkjet printer (perfect fit in owners stateroom cabinetry adjacent to desk), connected to devices via Starlink wi-fi for remote printing
  • Upgrade Fusion Radio Marine Apollo RA770 with 2 speakers in Salon and 2 in Cockpit (control via App)
  • Rogue Wave Wifi Extender


  • Onan Genset 13.5Kva 110V/ 60Hz ~900hrs
  • Huge 1,200AH (15.4kWa) Relion Lithium LifePo4 battery bank, still under warranty
  • 1820w of solar panels on custom SS arch and on rooftop
  • Victron MPPT Solar Charger 100/50 x 2
  • Victron MPPT Solar Charger 100/30
  • Victron battery management systems and Cerbo screen. Monitoring and Control (monitor app; take control of the systems remotely via your phone or tablet)
  • Victron Multiplus inverter charger 5k - run washing machine/ master aircon /charging starter battery all at the same time off the battery bank if you like). Up to 220 Ah house battery charging for quick house bank charge.
  • AC socket in Cockpit plus USB at Helm
  • USB 12V sockets in all berths and salon
  • 50amp American standard shore power plug with cord for use while docked
  • SeaRecovery ProMini 550 (23gph) - AC version with new membrane replaced in Dec 2023. Auto fresh water flush every 7 days.
  • Splendide Washing machine combo dryer
  • 4 separate A/C units 110V 48000 BTUs

Deck and Hull

  • Hard Bimini top with full enclosure with added zipper opening for front panel
  • Trampoline
  • Outboard engine bracket on pushpit
  • Fresh Water System for Dock Water (bypass water tank)
  • Dedicated Propane Locker with 2 Tanks
  • Hot and Cold Transom Shower
  • Exterior Fusion Stereo Speakers
  • 4 Underwater lights Aft with rotating colors controlled by switch in Salon
  • Bow Pulpits
  • Helm seat cushions Dark Grey
  • Dinghy hoist system
  • Deck wash pump sea water / fresh water
  • Paddle board and kayak storage brackets on Port side, one paddle board included
  • Sunshade for front deck

Sails and Rigging

  • Mast material aluminum
  • Standing rig material stainless steel – professionally inspected annually
  • Dacron square top mainsail in lieu of standard
  • Jib on furler 35sqm, self-tacking
  • Code 0 with UV strip - Quantum Sails
  • Asymmetric Spinnaker - Quantum Sails - rarely used
  • All sails removed, inspected, cleaned and repaired professionally annually
  • Winches Harken (2x electric at helm station, 2 manual port/starboard aft
  • Sail bag - inspected, cleaned and repaired professionally annually
  • All running rigging upgraded; dyneema cored lines for all halyards, main sheet and topping lift
  • Numerous spare blocks, halyards, lines, shackles and misc. parts

Engines and Mechanical

  • Engines 2 x Yanmar 4JH57 (57hp) - upgraded version - ~1150 hrs serviced by professionals according to Yammer service schedule
  • Yanmar SD-60 Saildrives
  • Propellers 3 blade folding
  • Shark shaft line cutters fit between drives and props
  • Stock VALEO 130amp Alternators - comparable generic brand spare alternator
  • Various spare Yanmar parts and filters
  • All new starter batteries for engine and genset.


  • Highfield C340 in light grey with aluminum hull
  • Dark Blue sunbrella chaps
  • Tohatsu 20hp outboard - serviced per specifications by professionals
  • Stored indoors in climate-controlled facility during hurricane haul outs

Navigation Equipment

  • B&G Zeus 12 inch plotter at helm (Navionics charts, US and Bahamas, Caribbean & Mexico, plus C Map charts)
  • B&G Zeus 12 inch plotter at nav table
  • B&G Halo 20+ radar
  • B&G V60 VHF plus 2 remote handhelds (with extra helm charging cradle fitted)
  • Wireless blue tooth autopilot control (on lanyard)
  • Radar reflector on mast
  • LED tri-color masthead navigation light
  • Steaming/Deck light upgraded to LED
  • NV Charts - complete sets for US East Coast, Bahamas, and Caribbean
  • Various cruising guides, pilot charts


  • Bilge pumps 2 x manual, 2 x automatic (with portable electric high capacity emergency spare)
  • Viking Life Raft - 8 people, Re-certified in 2023 by Sea Safety Systems
  • Life jackets 4 x Spinlock with individual AIS transponders inside
  • Various additional traditional and inflatable lifejackets
  • Life ring
  • 70' West Marine Throw rope
  • ACR EPIRB with hydrostatic release
  • 6 USCG approved fire extinguishers, inspected/serviced annually
  • 2 x fire blankets
  • Fully equipped ditch bag - with radio, solar charged battery charger, fishing equipment, medicine, water, sunscreen, hats, etc.
  • Smoke alarms
  • Bilge alarms
  • 2x Weems&Plath Night Visual Distress Signals for Boats (one in ditch bag, one on boat)
  • Weems & Plath Electric Barometer on Helm Desk
  • Fog Bell
  • Horns and flares (various types)
  • First aid medical kit - Adventure Medical kits

Anchor and Docking

  • Rocna 33 Anchor
  • Fortress FX37 Spare Anchor
  • Chain – 200' of D10 chain with additional 65 feet of rode. Newly replaced in April 2024
  • Bridle with Mantus 3/8" chain hook
  • 4 Highfield inflatable fenders
  • Various mooring lines/fenders
  • Fairleads on bows to guide mooring lines
  • Quick Windless hardwired remote


  • Full kit of tools for boat repairs and maintenance
  • Various spare parts
  • Cleaning supplies
  • Screens for all portholes
  • Jerry cans (2 Diesel & 1 Gas)
  • Water containers 1 @ 5 gallon, 4 foldable 4 gallons
  • Sheets and linens, plus extras
  • 2 beach chairs
  • 2 bean bags (West marine)
  • Fishing gear (including 2 Penn Squall trolling rods, filet knife, lures, cutting board, lobster bag and loop and 2 Hawaiian slings)
  • Various sailing and cruising books including pilot charts
  • Janome HD3000 Heavy Duty Sewing Machine
  • Yoga mats, workout rubber bands
  • Various sized 12v lithium batteries and chargers
  • Various lights, solar lights, Thermal cell mosquito repellent
  • Portable Induction cooktop, portable camping gas stove, instant pot, vacuum packaging tool
  • 2 CLIQ folding chairs for beach activity
  • Hammock


  • Sonder's engines and generator have been maintained primarily by professional mechanics pursuant to manufacturer's maintenance requirements
  • Winches and windlass are regularly serviced by owner
  • Sails have been professionally inspected, cleaned and repaired annually and stored in climate controlled environment during hurricane season haul outs
  • All rigging has been professionally inspected annually
  • Antifouling applied annually during haul outs
  • Hulls polished and waxed as required, at least annually. Most recent done in April 2024.
  • Hull caulking was redone in 2023.

Catamaran Photos