Lagoon 420 HH Sound Waves

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 34 hours of motoring

Power & Electrical

• Battery Bank: 4x Victron Smart Lithium 24v 200Ah (House, x 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


• 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, bosuns 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, 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.