Lagoon 500 4 cabins version with separate owner's cabin

US $425,000 Now reduced
51' - 15.54m
Family, Cruising, Live Aboard
Vessel Location
Launch Year
Hull Material

-Owner's Version w. Extra large separate Master stateroom but 4 cabins total.
-Owned by 3 consecutive cruising families who continuously upgraded the boat for comfortable and safe cruising.
-Interior upholstery fully replaced in 2022
-Enclosed cockpit and flybridge for weather protection
-Factory upgrade from 54HP regular engines to 75HP each
-Well maintained Yanmar 4JH3-TE engines. Just serviced.
-Sail drive seals fully replaced 2022
-3 blades folding propellers
-New rigging 2020
-New sails 2021
-Onan 11Kva generator
-OPEN OCEAN Watermaker - 180L/h
-Electric primary winch and davit winch
-4 cabins and 4 heads with completely separate owner's cabin as you would expect on an owner's version, with it's own private stairs for complete privacy.
-Huge amount of storage throughout. This boat is ideal for a long term cruising family.
-Washing machine, separate dryer, additional fridge and freezer downstairs, ducted vacuum
-Air conditioning throughout
-Wet bar in cockpit
-50 Inch Falcon Smart TV June 2023
-Fusion Sound System with Zone Control Throughout the boat
-Wired for 240 V, and most plugs have been upgraded to Australian/NewZealand type
-1500 Solar power on arch and wind generator
-3x Mastervolt Marine Battery Chargers
-Huge 19KWH House Battery Bank
-Huge inventory including spares, tools, water toys, dive compressor, 2 dive tanks
-September 2022 full survey report available on request
-Comes fully loaded with everything you need to just step aboard and begin your journey.

Read on for the full description!

Delivery can be arranged anywhere in the world



"Looking for the adventure of a lifetime and the boat to have it on! Look no futher. This Lagoon 500 has taken our family across thousands of miles of blue water ocean and back again, and now it is time to pass it on to someone else.

Firefly has been well loved, and cared for throughout her many miles, with many decades of good life ahead of her.

We priced Firefly as low as we could, in order to give another family the incredible opportunity afforded by this capable Bluewater cruising boat. She comes fully equipped with not only all the safety equipment, tools and spares you could need, but a whole host of toys, like standup paddle boards, tubes, battles mats, and more to make your time at sea unforgettable.

If your looking for a well loved boat, that is turnkey ready to go, this is the one! She is in excellent mechanical condition, and had brand new upholstery inside. There are wind and fly screens for the entire back cockpit, as well as a fully enclosed helm station above.

Firefly has two well maintained Yanmar 75 HP engines that are happy pushing her along at 8 knots, and sails that are only a couple years old, for worry free silent propulsion. The rigging was all replaced or serviced during a major overhauls in 2020, and has many years of service ahead of it. The seals in the SD-50 Sail drives were replaced a year ago, and should also provide worry free operation.

The three downsides to Firefly, are worn flooring, it is in great mechanical shape but shows its age, crazing on the sugar scoops gel coat, and the dinghy has seen better days, though again, mechanically it is in excellent condition.

Speaking of the dingy it is a Yamaha 40HP, that can plane fully loaded with 6 people, tow a knee board, or just get you to and from shore. It isn't as pretty as it once was, but run excellent, and has been an absolute workhorse.

Bottom paint is less than a year old, and was applied professionally in Bay of Islands New Zealand.

The original owner had the boat in Tahiti until 2018 when it was Purchased by a certified captain, who brought it through an extensive refit after sailing it to New Zealand in 2018-19 with his family. He used it to travel through much of the pacific, and then down the southern island of New Zealand.

We purchased it in Oct 2022 and sailed her up to Vanuatu, Across to Australia, up and down the east coast, and then to New Caledonia, and then Vanuatu again, where she is currently. She has been in bluewater use extensively for the past 6 years. Before that she was owned by a french man in Tahiti who used her personally.

There are spares plenty, and she is setup for immediate sailing on the next adventure.

Firefly is registered in San Marino, Bluewater Registration. De registration in less than 5 days so it is easy for a new owner. No liens, or insurance claims etc. We had gel coat repairs done on the port hull after scraping a pylon, but as it was minor damage, we never had it go through insurance. Nothing structural. Work was completed by Rivergate Marina in Brisbane.

We planned on sailing for a couple years as a family, but my wife gets really bad motion sickness. And despite me and the boys being fine, it is only a family adventure if the whole family can enjoy it. So were selling. Im a bit sad, but okay with it. New adventures will come. "

The Lagoon 500 Firefly is a serious offshore cruising vessel, designed and built for unlimited offshore adventures and independent, luxurious life on board for months at a time. The space is simply huge, as is the storage capacity for a large family, or group of friends who can easily make this boat a veritable home. This Owner's version is also Ideally suited to a skippered charter venture as well, should you wish to tap into the inexhaustible demand for this market anywhere in the world.

The layout is uncommon for a 50' catamaran, and very much based on Superyachts, with its entirely separate owners' stateroom, which mimics what you would expect size-wise on the Lagoon 440 owner's hull, with separate staircase access, giant island berth, lounge area with a big couch, walking wardrobe and extra large ensuite with seperate shower.

Forward to starboard is another dedicated staircase to what can be the crew stateroom, or very private guest stateroom, with a large double cabin and ensuite head / shower area with a screen door to separate it from the main bathroom area.

Port side is another companionway with long hallway, which on Firefly ideally house the laundry (washing machine and separate dryer), big cupboards, and a door at each end for the two guest staterooms, both with abundant storage, queen size bed, large windows and opening portholes / deck hatches, and in the aft cabin a drop-down deck / study area.

Firefly has a completely separate helm station from the aft cockpit, which leaves your family or guests undisturbed when sailing. The large U shape settee can easily sit 10 or 12 people. There is plenty of dedicated storage all around, and a very convenient wet bar with large sink, perfect for preparing drinks, or to clean up the fish you just caught.

On the aft deck, which runs the whole length of the aft cockpit, there is a brand new stainless steel BBQ mounted on the rail, perfectly positioned to keep drips from falling on the gelcoat.

Going up a few easily accessed steps is the very large flybridge / helm station, with good visibility all around and a great view of the sails. The helm seat can sit an entire family. The helm bring every ropes control back to within easy reach of the helmsman, with a foot operated electric winch to handle all your sheets. The large plotter and all the instruments, as well as the radio and engine controls are all located there.

Forward is the giant deck and trampoline, with huge deck storage on either side of the anchor well. The windlass was recently replaced with a powerful Maxwell 1500 watts.

Going inside the large saloon is level with the U shape galley, functional and equipped for commercial catering if desired, with a full size 4 burners stove, oven / broiler, 3 sinks (one for drying), and a fridge / freezer. There is abundant storage all around the salon and galley, with additional under-floor storage as well, perfect for cans or bottles.

Going down the port side companionway is a recently installed 9kg Robinhood washing machine and separate dryer. Both running off the shorepwoer (220/240V), or the generator (11Kva Onan), which works perfectly and was just serviced again.

A large stainless steel and separate freezer are also installed in this hallway, ideally located close to the galley.

Next to the salon is a large navigation area, complete with large size repeaters, autopilot repeater for control and navigation from inside the boat, as well as the radio, sat phone, ect. This Lagoon 500 is equipped with Starlink, which the owner can transfer to a new owner and include in the sale if desired.

Firefly (just re-named from Chaos), was the home on the ocean of 3 consecutive families, who brought her first from France to Tahiti, then to NZ, and eventually back again around the Western South Pacific to Australia and Vanuatu, where she is now located and is very well taken care off by the owner's nephew, (who helped us put together the video walk-through).

Firefly has kept everyone safe and comfortable across thousands of ocean miles, and is ready to go again. She was surveyed in September 2022 by Stanley Lehman in NZ. The report is available. With a little cosmetic work to her gelcoat (sugarscoop areas mainly), some of the interior timber trimmings and the flooring the salon are showing some wear and tear. The owner has otherwise kept the boat mechanically and in all other aspects in excellent condition, and with a very recent rigging, sails, and all her mechanical heartbeat maintained religiously, she is ready to be delivered to you, or to just step board and continue your journey.

Lastly, Firefly comes turnkey and with an enviable inventory, including an astonishing supply of tools and spares, reliable dinghy, safety equipment and water toys.

Read on for the full description and for more information please contact our friendly team at Nautilus Yacht Management. We are cruising yacht specialists and carefully check all our listings for seaworthiness, consistent maintenance by their owners, seagoing capabilities and specific qualities to be suitable as live-aboard.

Our agency has helped buyers from all around the world purchase the boat of their dream, and over a decade of working on an international platform has provided us with the knowledge to help you with all the steps of your purchase, import, delivery, registration etc. Purchasing a yacht overseas does not have to be stressful. We are here to help.

US $425,000 Now reduced   
Vessel Name
Firefly (Just renamed from Chaos this year)
Boat Reference
Launch Year
51' - 15.54m
41005 lbs
Keel / Ballast
Beaching sacrificial mini-keels
Vessel Location
North Island
Van Peteghem/Lauriot-Prevost
CNB - France
Hull Material
Decks Material
Yanmar 75 HP Engines both Under 5500 Hours. Oil and Filters changed every 250 hours, and Impellers, Belts, changed every 500. Last service showed the Port Impeller with a small amount of wear, and a small piece of the impeller missing, but not enough to concern. Starboard impeller was fine, but replaced anyhow. SD 50 Saildrives. Seals were changed during haul out in Oct 2022.(Owner's note: The Starboard Saildrive Oil Fill cap needs to be replaced, as it is cross threaded, so care needs to be taken when putting it back after checking oil levels, to make sure it is sealed properly. Boat will cruise comfortably at 8 knots with both engines running at 3000 RPM, 6 knots with just one engine at 3000 RPM. Max speed 10 knots. Starter Battery Replaced June 2023 Engines serviced every 250 hours as per manufacturer recommendations
Engine Make
Number Engines
75 X 2
Fuel Type
Engine Hours
Fuel Consumption
5 L / h each at 8 knts cruising speed
Max Speed
10 knots
Cruise Speed
8 knots
SD 50 Saildrives. Seals were changed during haul out in Oct 2022.3 blades bronze props, folding.
NA double prop
CUMMINS ONAN MDKBL 11KW Generator (Serviced March 2023). Hours over 5500, Runs reliably, serviced regularly. Extremely reliable. Has its own Starter Battery. (Owner's note: Alternator j
Dingy 3.9 Center Console, aluminium RIB Highfield in poor Cosmetic Condition, but excellent running condition.
Yamaha 40 HP outboard. Regularly Serviced.
Bimni over Helm Station, Fully enclosed, New in 2020
Weather / sun protection cockpit covers / side curtains
Owners Version Lagoon 500 with huge Master stateroom + 3 ore double cabins, 4 heads layout.
The Master cabin / Owner's cabin is on the starboard side, with its own companionway (staircase), ensuite, large couch, extra room, ect.
The Master cabin has two hanging lockers, long enough for dresses, as well as 8 cabinets with drawers. The bathroom on the owners cabin is also a bit bigger with additional storage spaces above the toilet.
12v Adapters by all beds for USB charging, as well as LED Cabin Lights (2022) and reading lights above every bed.
Crew or guest cabin with its own companionway forward starboard side with its own ensuite.
Port side has a single companionway and hallway servicing two fully enclosed staterooms each with their own ensuite. Aft head area / ensuite has a separate shower and deck / study.
Large amounts of storage under all the beds, with 4 drawers under each bed, as well as a large cubbies for items such as blankets, backup parts etc.
Air conditioning throughout.

Each Bathroom features an overhead hatch, as well as side ports for cross ventilation.
There are four heads, all electric, and very reliable.
The port Forward cabin has had the main drain lines replaced recently, and the other main drain lines are all in great working order with no issues flushing.
Each aft heads has a holding tank (50L each)
Forward heads are direct flush
Both aft heads feature separate shower area with door
Forward heads feature separate head with drop down lid / seat and shower with door, closing off the rest of the bathroom.
Each bathroom has a mirror cupboards and plenty of storage
4 plus two bow cabins used as storage
4 double
4 with holding tanks
Washer and Dryer onboard, New 2022,9L Washing Machine and separate dryer, for those things that just need to be dried.
50 Inch Falcon Smart TV June 2023
Fusion Sound System with Zone Control Throughout the boat, so you can listen to you music wherever you want to be. Additional Remote up in the helm station so the captain has ultimate control. As well it can be controlled via a bluetooth App on your smart devices.
3 separate units throughout.
Hot Water Comes off the Port Engine, or when you run the generator, and is well insulated and so it lasts days after running the engine.
The galley is well appointed u shaped. Features one fridge/freezer upstairs and two additional Stainless Marine Fridges in the Port Hull.
There is a home sized oven and four burner gas stove, with Saftely Solenoid gas shutoff, as well as self starting ignition.
Breadmaker, Blender, Rice cooker all included.
There is a sink outside for cleaning fish and vegetables before bringing them into the boat, as well as for serving food to guests in the cockpit.
OPEN OCEAN Watermaker - 180 L an hour. Works incredibly well. New Membrane Dec 2023
Hot Water
Hot Water Comes off the Port Engine, or when you run the generator, and is well insulated and so it
Ground Tackle
Maxwell Windlass New 2021
Safety Gear
Diesel shutoffs located under each back cabin bed.
Large Fire extingushers in all stairways and near kitchen.
2 X Liferafts, 1 X 8 Person Certified in New Zealand, Other one unknown certification.
4 X 1800L Bilge Pumps, 2 in each Hull, plus 2 Crash Pumps in each hull, controlled via switches in the helm station.
Manual Bilge Pumps for each hull located in the cockpit.
10 X OffShore Certified Lifejackets (all in date) with built-in harness.
$3500+, Medical Kit, Including Antibiotics, Suture Kit, Blood Oximiter, Inhalers, Nebuliser, medicine all purchased Oct 2022, in date and non expired. Organised.
Emergency Ditch Kit, Includes a Garmin Inreach, GPS Unit, Solar Panel, and necessary Cords.
6 X 2V LIFEPO Marine Batteries for a total of 19KWH @ 12v.
1500W of Solar on a large solar arch.
ATMB Mariner Wind Generator
30 or 50 amp shore power plugs.
Upgraded 60 Amp Alternator on Port Engine.
Boat is wired for 240 V, and most plugs have been upgraded to Australian/NewZealand plugs.
Cummins Onan MDKBL 11KW Generator (Serviced March 2023)
Portable Solar Panel for Emergency use
3x Mastervolt Marine Battery Chargers
Huge 19KWH House Battery Bank
Separate engine and generator batteries. One new start battery June 2023
Electronics / Navigation
GME 406 Mhz Satellite EBIRB
Garmin 1222xsv Touch Chartplotter - 2020
Garmin VHF 115i Marine Radio
Raymarine ST-60 Wind Inducer
Raymarine ST60+ Display
Garmin Inreach Messenger
Handheld Garmin
Can transfer the Installed Starlink to New Owners if they wish
Sail Inventory
Headsail and Mainsail were replaced 2020.
Rigging replaced 2020.
Main halyard was replaced in early 2023 with a Dynema Line.
Main Topping Lift was replaced June 2023
Deck Gear
The owner writes: "I'm a tool guy, so the boat comes loaded with spares for practically everything including the autopilot, and the instrumentation, but also thousands of dollars of stainless hardware, filters, pumps, belts, impellers, screws, pulleys, sail repair kits, dinghy repair kits, electrical supplies, plumping Supplies... "

$3000 + Power Tools purchased within the last year.

Makita Power Drill,
Ozito Portable Pump,
Ozito Skill Saw
Ozito Multitool
Ozito Sawzall
Ozito Power Drill
Ozito Happer Drill
Ozito Shop Vac
Battery Chargers etc...

Defiencies: The sugar scoops gel coat is very crazed. Not structural, but it looks bad.
The flooring and woodwork, mostly in the main traffic areas / salon shows a lot of wear.
Well presented, extensive upgrades, enviable inventory and equipped to be sailed by her new owner or delivered anywhere in the world. Small areas of cosmetic wear and tear. Availale now. Dowload the attached brochure for all the info.

Nautilus Yacht Management
Careel Bay Marina
46 Cowdroy Avenue
City / Suburb

We take your privacy very seriously - your contact details are never shared!