Lagoon 450F

Additional Information

Accommodation

• Accommodation – Sleeps 10–12

• (4) Double guest cabins, each with private ensuite head/shower

• Convertible saloon table forming an additional double berth

• (2) Single forepeak skipper/crew cabins (currently used for storage; cushions included and easily reinstated)

• Total: 10 adults comfortably in cabins + saloon

• Total: Up to 12 including both forepeak berths

Interior Comforts and Amenities

• Air Conditioner: Cruisair / Dometic

• Cabins: (4) 8,000 BTU

• Saloon: (1) 16,000 BTU

• AC capable of running 1–2 cabins overnight on battery power

• Soft start A/C, (5) Micro-Air Easy Start Breeze (2026)

• Fans: (6) Sirocco II, 12V (2025)

• Heater: Via reverse-cycle air conditioning

Refrigeration:

• Vitrifrigo: (2) DRW 180A drawer units, 150L (12V / 120V) (2023)

• Cockpit refrigerator, 90L (120V)

• Freezer: Convertible via Vitrifrigo drawer units (configurable fridge/freezer) (2023)

Stove and Oven:

• Anova Precision Oven (steam + convection, air fry, sous vide) (2023)

• (2) Burner propane hob (2023)

• (2) Burner induction hob (2023)

• Propane Shut Off Valve: Solenoid

• Gas/smoke detectors: (1) Gas detector

• Gas/smoke detectors: (5) Smoke detectors

• Vented Propane Locker: For (2) tanks

• Propane Tanks: (2)

• Barbeque: Weber gas BBQ Q1200 (2024)

• Watermaker: Seawater Pro, high-capacity, (3) membrane system (approx. 272 L/hr) (2021)

• Icemaker: 70 lb / 24 hr ice maker (120V) (2023)

• Water Heater: Quick 60L

• Water System: Pressurised fresh water system with (4) 175L tanks with electric valve switching

Heads:

• Electric toilets, Jabsco quiet flush 12V with blackwater tanks

• Blackwater tanks: (4) 80L with electric valves to open/close

• Soft close toilet seats (2025)

• First Aid Kit

• Headroom Max: 6 ft 9 inches

• Length of Bunks Max: 6 ft 8 inches

Upgrades:

• New upholstery sofa in salon, Sunbrella interior (2024)

• Mixers and taps in all bathrooms (2024)

• Curtains original from manufacturer throughout the boat (2025)

• Mattresses on (2) beds (2024)

• Chrome push locks throughout the whole boat (2024)

• Memory foam topper all beds

Electronics and Navigation

• Primary Chart Plotter and GPS: Raymarine eS Series 12” Multifunction Display

• Autopilot: Raymarine Evolution Autopilot (ACU-400 with P70s control)

• AIS Receive and Transmit: Raymarine AIS-650

• Network / Data: Raymarine SeaTalk HS5 network switch (SeaTalk HS)

• Speed and Depth Sounder: Smart tri multisensory transducer with Raymarine i70/i70s display

• Primary VHF Radio: Raymarine 55 VHF

• Wind Speed and Direction Indicator: Raymarine i70 / i70s display

• Compass: Plastimo compass (correction date unknown)

• Internet: Starlink satellite internet

• Stereo: Kenwood

• Stereo Speakers: Bose and subwoofer in salon

• Deck Lights: Navigation lights at deck level and aloft

• Underwater Lights: White/blue Hella (2022)

Electrical Systems

• Direct Current System Voltage: 12V

• Alternating Current System Voltage: 120V

Batteries:

• House: Lithium 1,200Ah ((4) 300Ah)

• Engine: Lithium (2) 165Ah (2026)

• Generator: Lifeline AGM GPL-2400T (2025)

• Generator: Cummins ONAN 13.5 kW diesel generator – Approximately 11,400h

• Solar Panels: Renogy flexible panels, (6) 100W with Victron solar charger, (2) MPPT100/30 controller (2024)

Inverter:

• Mastervolt Combimaster 12V / 3500W

• MASS 12V / 2000W sine wave inverter

• Battery Charger: Mastervolt CombiMaster 200A

• Mastervolt Chargemaster Plus 12V / 100A (2023)

• DC/DC charger: Mac Plus 12V / 12V-50A (2023)

• Cristec 12V / 25A (generator battery)

• Shore Power Cord: (1) 50A (house), (1) 30A (house), (1) 50A (A/C)

• Battery Monitor: Mastervolt shunt 500A + SmartRemote display (2025)

• Alternator: (2) 125A alternator, with external regulator for lithium charging, Mastervolt Alpha Pro III (2026)

Additional Electrical Information:

• Automatic power transfer switch for generator / battery Aircon

Deck and Hull Equipment

• Lewmar hatches with Ocean Air Skyscreen (2024–2025)

• Dry fast foam outside cushions (2026)

• Sunshade window mesh salon, black (2023)

• New trampolines, black small mesh (2024)

• Cushion covers + bimini outside, Sunbrella (2022–2023)

• Water tap cockpit (2024)

• Weber gas BBQ Q1200 (2024)

• Bottom paint, Sea Hawk Island 77 (2025)

• Underwater light, white/blue Hella (2022)

Ground Tackle:

• Primary Anchor: Rocna 33 kg

• Primary Chain: 12mm galvanized 300ft, with Mantus swivel (2024)

• Primary Rode: Chain only

• Secondary Anchor: Danforth

• Anchor Windlass: Quick Dylan 1700W

• Bow Anchor Roller

• Cockpit Table

• Fenders and Dock Lines: (6) fenders + (4) main dock lines + spare lines (never used)

• Swim Ladder: (2) foldable

• Side Stanchions and Lifelines and bow seats

• Life Raft: Viking (not serviced)

• Dinghy Davits: With Harken electric winch

• Deck Wash Down System: Fresh water + salt water

Sails and Rigging

• Standing Rigging: Replaced (2022)

• Winches: (5) Harken electric 2-speed winches

• Mainsail: Incidence Sails (2019)

• Genoa: Incidence Sails original

• Running rigging age: All lines replaced (2023–2025)

Mechanical Equipment

• Blackwater hoses WC (2025)

• Valves holding tanks, TruDesign (2025)

• Manual Bilge Pumps: (2)

• Electric Bilge Pumps: (2) submersible 12V electric pumps with automatic switches and high water alarm + (2) Whale Gulper bilge pumps 12V electric

• Steering Type: Single helm station using roller chain to 7x19 cable over sheaves to the steering arm(s)/crossbar

Safety:

• Engine room fire extinguishing system: (2) ABC (Dry Chemical) 2kg automatic units, serviced March 2025

• Portable extinguishers: (4) ABC (Dry Chemical) 2kg, serviced March 2025

• Emergency Tiller

Flares:

• (6) Type C: Hand-held (Red), Expiration Dec 2026

• (4) Type A: Rocket parachute (Red), Expiration Nov 2029

• (2) Type D: Smoke signal-buoyant (Orange), Expiration Sep 2027

Life Saving Equipment:

• (12) Type I life jackets

• (2) Child life jackets

• (6) Type IV throwable cushion PFD

• (2) Throwable horse shoe collar(s)

• (1) Danbouy inflatable

• Additional Mechanical Information: Reinforced / upgraded bulkheads with Lagoon Certification (2022)

Engine Info

• Manufacturer: Yanmar

• Model: 4JH5E

• Year: 2014

• Horsepower: 54HP

• Hours: Approx. 3000h

• New engine mounts (2022)

• New 125A alternator, with external regulator for lithium charging, Mastervolt Alpha Pro III (2026)

• Drive Type: SD 60 saildrives (2022)

• Propellers: 3-blade fixed Volvo (2021)

• New engine control cables throttle and gear (2024)

• Fuel Type: Diesel

• Engine Serial # Port: E14800

• Engine Serial # Starboard: E14807

• Engine alarms

• Fuel filter

• Emergency stop

• Raw water sea strainer

• Fresh water cooling

• Fuel shut off

• Engine room fire extinguishing

Tankage

• Diesel tank: 1040L = (2) 520L aluminum tanks)

• Fresh water tanks: 700L = (4) 175L, joint together 2–2, electric valve to switch tanks

• Holding Tanks: Plastic = (4) 60L

Owners Comments and Boat History

Miss Summer has been in our ownership for nearly 7 years, continuously upgraded to make her more efficient and modern. We have basically been everywhere on this boat over the years, and she has proven to be a truly great boat – very safe, well maintained and professionally upgraded.

Significant investment has been made in the electrical side. We decided to convert her to lithium power. What a game changer! This upgrade also led to new/upgraded installation of wires, new and more powerful charger and charger/inverter from Mastervolt. The final touch to the upgrade was made in 2026 with new alternators, that have external regulators with lithium charging profile. We also installed soft starts for the A/C units, to run them smoothly off the battery bank.

We have redesigned and upgraded the galley with electrical steam/sous vide/convection oven, combining gas and induction top. New fridges/freezers, that can operate as fried/fridge, freezer/freezer or fridge/freezer, with automatic defrost.

We upgraded to SD60 sail drives and new propellers a few years back, due to one slipping gearbox. So we decided to change both sail drives to new. At the same time, we installed new engine mounts.

The rig was starting to show signs of aging, so we replaced the standing rigging. And this has been the theme during our ownership – Always trying to be on top of things rather than letting things break.

Over the years we have upgraded the interior and the fabric on board, to make her look modern and pretty. The sofa was remade with Sunberella interior fabric, new Sunbrella cushion covers throughout the exterior. All beds have memory foam toppers and are very comfortable. New curtains/blackout were purchased from the original manufacturer and color changed to gray instead of the original beige. Installed LED lights in the steps. New, black, trampolines. We recently changed all the black water hoses and replaced the old valves with TruDesign valves. All bathrooms have new faucets and soft close toilet seats. New chrome push locks though out the boat. All chrome on this boat is shining.

Miss Summer has, during our ownership, always been operated by us, who are commercial licensed captains, and she has been professionally and regularly maintained.

During our ownership she has not suffered any damage. The boat has been inspected in water every year, and out of water every third year. During the last insurance survey in May 2025, the report came back blank. During the last safety inspection in December 2025 and February 2026, no deficiencies were found.

Before our ownership she suffered some damage in a hurricane, about 9 years ago. When we bought her, she had been standing on the hard for almost two years. She had a brand-new boom and main sail installed, new A/C units on starboard side. She also came with a brand-new cross beam as a spare. Nothing was wrong with the one installed, but when we later noticed some delamination damage, that we had professionally repaired by the West End Boat Yard, we also asked them to install the new cross beam and donated the old one. At the same time the bulkhead was reinforced, certified by Lagoon. Bulkheads were in good shape and not broken.

Disclaimer

The Company offers the details of this vessel in good faith but cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. A buyer should instruct his agents, or his surveyors, to investigate such details as the buyer desires validated. This vessel is offered subject to prior sale, price change, or withdrawal without notice.