Office:+1 215-508-2704
Mobile:+1 904-610-2743
jason@multihullcompany.com
About
Lagoon 420 | Extensively Modified Performance-Oriented Cruising Catamaran
Rollercoaster is a highly customized Lagoon 420 that stands apart from any standard example on the market. Designed for owners who value the legendary comfort, layout, and livability of the Lagoon 420but want significantly improved offshore performance, motion, and safetythis vessel has undergone a professionally engineered hull transformation and comprehensive systems upgrades.
Following extensive research and consultation with experienced fabricators and naval design principles, Rollercoaster was lengthened both aft and forward, resulting in a dramatically increased waterline length, reduced pitching, improved speed, and a noticeably smoother motion in a seaway. All structural modifications were executed by Cracker Boy Boatworks (Riviera Beach, FL) and inspected during construction by a marine surveyor (survey documentation available upon request).
The result is a rare opportunity: a proven, comfortable cruising catamaran with the waterline length, reserve buoyancy, and wave-piercing characteristics typically found on much larger performance cats.
Rollercoaster is not a typical Lagoon 420. It is a thoughtfully re-engineered cruising catamaran that retains the exceptional interior volume, cockpit-galley flow, and liveaboard comfort the model is known forwhile delivering the speed, motion control, and offshore confidence of a much longer vessel.
For sailors seeking a proven, long-range cruising platform with meaningful structural upgrades, serious energy independence, and professional execution throughout, Rollercoaster represents a rare and compelling opportunity.
Specifications
SPECS
MEASUREMENTS
ENGINE(S)
TANKS
Accommodations
Hull & Structural Modifications
Extended Transoms Approx. 5 ft (1.5 m)
Eliminates submerged transoms for reduced drag
Substantially increases reserve buoyancy aft
Greatly reduces hobby-horsing in short-period seas
Improves boarding, swimming access, and deck space
Finished with Plasdeck Cool Teak (cooler underfoot, no maintenance)
Extended Axe Bows Approx. 3 ft (1 m)
Narrower, wave-piercing entry inspired by modern axe-bow research
Improves comfort and safety when motoring or sailing into head seas
Enhances overall seaworthiness and offshore capability
Net Effect
Approximately 49 ft effective waterline length
Improved passage speeds
More controlled motion in inlets and offshore conditions
Rig & Sail Inventory
Full-batten, large-roach mainsail (stock)
Furling headsail (stock)
Quantum A3 Asymmetric Spinnaker (~1,200 sq ft)
Ground Tackle & Deck Hardware
60 lb Ultra Anchor with flip swivel
Fortress FX-85 secondary anchor
200 ft of 3/8″ chain (2020)
Lofrans Project 1000 windlass
Custom heavy-duty davits
Dual swing-arm lifting davits (~300 lb each)
Integrated into solar arch
Cockpit & Exterior
Full cockpit enclosure
Cockpit dodger
Aft roll-up cockpit shades
Standard Lagoon cockpit cushions
Exterior sun screen curtains
Aft bench seating
Kayak / SUP carrier
Electrical & Energy Systems
This vessel is designed for true off-grid cruising with a highly efficient 24-volt lithium system.
House Battery Bank
4 ReLion 10.2 kWh RB24V100 LiFePO batteries (2019)
Total capacity: 12.8 kWh @ 24 volts
Solar
6 Kyocera 250-watt marine solar panels (1,500 watts total)
Panels integrated into davits and bimini for shade and efficiency
2 Outback 60A MPPT solar charge controllers
Inverter / Charging
Outback 3500-watt inverter/charger
Separate 120V / 20A circuit for high-draw galley appliances
Outback MATE network monitoring system
Starting & Legacy Systems
3 Napa 775 starting batteries
Original 12V system retained for lighting, windlass, winches, electronics
Victron step-down converters supply 24V 12V efficiently
Generator
Onan 21.5 kW generator (approx. 4,730 hours)
Plumbing & Utilities
Spectra Catalina 300 watermaker
Quick electric water heater
Panda portable washer
Electric hot water capability via solar under favorable conditions
Galley & Interior
Isotherm CR130 refrigerator
Isotherm CR90F freezer
Dual-burner induction cooktop
Sunbeam microwave
Edgestar icemaker
Lagoon blue upholstery
Lagoon standard curtains
Accommodations & Climate Control
3-cabin / 3-head owners version layout
Manual Jabsco heads
4-zone air conditioning:
(3) 8,000 BTU units
(1) 24,000 BTU unit
Navigation & Electronics
Raymarine HD color radar (2017)
Raymarine Axiom 12 chartplotter (2020)
Raymarine SmartPilot autopilot (hydraulic)
Raymarine AIS Class B transceiver
Plastimo compass
Bahamas Explorer charts
Maptech charts for U.S. East Coast & Puerto Rico
(2) Handheld VHF radios
Helm steering wheel lock tied to autopilot hydraulic valve
Propulsion & Mechanical
Twin Yanmar diesels with SD-50 saildrives
Saildrive thrust bearings upgraded to non-wearing needle bearings (2017)
Gori 2-blade folding propellers
Excellent sailing efficiency
Reduced drag
Line-shedding design
Standing rigging replaced with Staylock / Norseman fittings (2017)
Safety & Tender
ACR Global EPIRB
Walker Bay console tender w/30 HP Tahatsu outboard
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.
Request More Information Add to Favorites Receive Updates
A sale well handled. No inflated expectations and an honest opinion throughout. Highly recommended.
Absolutely THE ONLY company to use for buying or selling a catamaran! Our Broker Andrew Hodgdon, was excellent to work with, an experienced catamaran captain with extensive knowledge of sailing catamarans, the ins and outs of the construction, performance, systems, everything involved and life on board catamarans. All of which is invaluable in looking for the right boat for someone to buy or helping market your boat when selling. The Multihull Company is so connected in the catamaran world and used by so many catamaran sailors and searchers that we had an interested buyer before our boat was even listed and a completed sale 60 days after her first showing!!! Thanks Andrew and all of the Multihull team who worked diligently to make it happen so smoothly!
We had a great experience working with Andrew! He was extremely knowledgeable and listened to our needs of what we wanted our next boat to be. He responded quickly to all of our requests and got us to the finish line. Working with Multihull was seamless and we highly recommend using Andrew and Multihull.
Chris Block was our broker. He was great. He went above and beyond what we thought we needed. His expertise helped us get our dream boat for way less than expected. I will use TMC and Chris Block in the future. Definitely recommend.
Chris Rundlett in Grenada was my buyers broker for a catamaran I purchased in Tortola.
The buying process was problematic with numerous mechanical issues needing attention. Throughout the process he was fantastic. I would highly recommend him if you’re looking to buy a boat in the Caribbean.
Successful relationships cannot exist without it. At The Multihull Company we base every relationship on a firm commitment to earning and retaining our client’s trust.
Advice of any kind is valuable only when grounded in hard-won expertise. It too, must be trustworthy. Trust and expertise define the heart and soul of The Multihull Company. We are a team of skilled professionals who thrive on providing expert, trustworthy advice and service to catamaran and trimaran sailors around the globe.
More About Multihull
