2008 Lagoon 420 – HH Sound Waves Currently Located in the Caribbean

A true pioneer in hybrid-electric cruising, “HH Sound Waves” is a meticulously maintained Lagoon 420 that blends luxurious liveaboard comfort with sustainable, off-grid performance. With extensive upgrades, including dual electric propulsion motors, 4,000W of solar, and a 21.5kW generator, she is ideal for eco-conscious sailors looking to explore the world in quiet, efficient style. This 3-cabin owner's version has seen over $100,000 in recent upgrades and presents in excellent condition.

⚓ Vessel Details

• Model: Lagoon 420

• Builder: Lagoon (France)

• Launched: 2008

• LOA: 41.3 ft

• Beam: 24.58 ft

• Draft: 4.16 ft

• Displacement: 16,040 lbs

• Construction: Fiberglass hull and deck

• Keel Type: Twin keel

• Rudder Type: Spade

• Drive Stations: 1

• Antifouled: January 2025

• Exterior Finish: Gelcoat – last polished January 2025

• Registration: USA

⚙️ Propulsion

• Engines: 2x Electric 72v motors (14.5 kW each)

• Engine Years: 2018 & 2023

• Horsepower: 18 hp each

• Cruising Speed: 5 knots

• Max Speed: 6.5 knots

• Drive Type: Shaft

• Fuel Type: Hybrid (generator-assisted)

• Fuel Capacity: 160 gallons

• Propellers: 17"

• Generator: 21.5 kW, approx. 2,500 hrs

• Fuel Efficiency: Generator runs ~1 out of every 3–4 hours of motoring

Power & Electrical

• Battery Bank:

  • 4x Victron Smart Lithium 24v 200Ah (House, 2022)

  • 48x 3.2v Lithium (Propulsion, 2023)

• Battery System: 48v house, 72v propulsion, 12v converted

• Battery Chargers: Sunpower Gold 100A, 2x Dakota 15A

• Inverter: 12.5 kW

• Shore Power: Both 110v & 220v

• Solar: 9 panels, 4,000 watts total

• Watermaker: 17 GPH, Watermaker Inc.

• Air Conditioning: Dometic (cabins), VelAir (salon)

• Heating: Reverse cycle AC

• Washer: Yes

Electronics

• Navigation Suite: Raymarine (Depth, Log, Wind, Radar, Autopilot)

• Chartplotter: Raymarine Axiom 12

• GPS: Raymarine

• Stereo: Fusion with 2 radios

• TV: 32” flat screen

Accommodations

• Cabins: 3

• Berths: 4 (3 doubles, 1 saloon berth)

• Headroom (Master): 6'5"

• Bathrooms: 3 heads, 4 showers (1 external on sugar scoop)

• Toilets: Electric freshwater

• Hot Water System: 11 gal, electric

• Galley: Central with triple sink, 2x 12v fridges, 1x 12v freezer, microwave, oven/stove

• Additional Galley Notes: Gas alarm, no dishwasher or icemaker

⛵ Rigging & Sails

• Standing Rigging: Replaced 2022

• Running Rigging: Replaced 2022–2025

• Mainsail: Functional; new spare on board

• Headsail (Jib): Functional

• Spinnaker: Lightly used, in good condition

• Bowsprit: Yes

• Winches: 5 total, 2 electric

• Furlers: Yes

• Main Reefing: 2 reefs, helm-controlled

Safety Equipment

• Life Raft: New August 2022

• Life Jackets: 8

• Flares: New 2022

• EPIRB: New August 2022

• Fire Extinguishers: New 2022

• Bilge Pumps: 2 per hull (manual and electric)

• Other: First aid kit, life ring, harnesses, bosun’s chair

⚓ Ground Tackle

• Primary Anchor: 30kg Bruce, 70m of 10mm chain

• Spares: 22kg plow, 20kg Danforth

• Windlass: Upgraded, new in 2023

Accessories & Extras

• Davits: Yes

• Swim Ladder: Yes

• Cockpit Cushions: Yes

• Deck Shower: Yes

• BBQ: Yes

• Spare Lines/Fenders: Plenty

• Tender/Outboard: Not included

• Water Toys: Not included

Refit & Maintenance

• 2018: New generator, navigation suite, A/C units, and electric propulsion

• 2022: Full solar and battery upgrade for long-term off-grid use

• Ongoing: Generator serviced every 250 hours, light mechanical needs

Sailing History

• Launched: France, 2008

• Previous Base: Florida (2008–2022, minimal use)

• Current Use: ~10,000 miles through the Caribbean since 2022

• Reason for Sale: Pursuing land-based investments

Special Features

• Among the first Electric-Hybrid sailing catamarans

• Can motor 3,000+ miles on a tank with smart generator use

• Continuously upgraded to keep up with evolving technologies

• Off-grid ready: solar, lithium, watermaker, and ample power

⚠️ Damage Disclosure

No known accidents, delamination, keel damage, dismasting, or structural issues reported.