Lagoon 410

Introducing “Sea Monster”, a professionally refitted 2000 Lagoon 410 designed for modern liveaboard comfort, long-range cruising, and off-grid independence. With an expansive 24' beam and 4.5' shallow draft, this ICW-compliant catamaran combines bluewater capability with island-hopping agility. Extensively upgraded between 2024 and 2025—including complete solar and lithium power, new electronics, comfort systems, and safety gear—this turnkey vessel is ideal for couples, families, or charter use. A 2023 sea trial and November 2023 survey confirm its mechanical and structural soundness. Sea Monster is ready to take you anywhere—efficiently, comfortably, and reliably.

Navigation & Communication

“Sea Monster” features a fully integrated Raymarine navigation suite with dual helm and interior redundancy, ensuring safe and confident piloting in all conditions. From AIS to dual chartplotters and wind instrumentation, every critical system has been upgraded or replaced.

• Raymarine Radar for advanced offshore situational awareness
• Dual Raymarine Chart Plotters for helm and nav station control
• AIS Send & Receive to track and be tracked by vessels worldwide
• (2) VHF Radios, each with wired mics at helm for hands-on communication
• Raymarine Autopilot for reliable self-steering on long passages
• New Raymarine i60 Wind Instrument & Gauge
• New Airmar Transducer for speed, water temp, and depth data
• New Windex for visual wind awareness
• All-New LED Navigation Lights: anchor light, port/starboard, stern for full visibility

Anchoring, Mooring & Docking

With a brand-new ground tackle system featuring a heavy-duty Rocna anchor, 300' of chain, and remote windlass controls, “Sea Monster” makes anchoring effortless and secure in any conditions. Additional equipment makes docking and mooring safe and stress-free.

• Maxwell HRC10 Windlass (2024) with foot switches and helm remote
• 300’ of 3/8” Galvanized Chain (2024)
• 33Kg Rocna Anchor for superior holding
• Mantus Anchor Swivel and Mantus Mooring Bridle
• (6) Fenders with Custom Covers
• New Dock Lines ready for any marina or mooring

Power & Electrical Systems

This vessel is a true off-grid powerhouse, with a massive 1800-watt solar array feeding 1600Ah of Renogy Rego lithium batteries, paired with dual 3000W inverter/chargers and multiple charge controllers. All shore power accessories are included, and dual generators provide reliable backup.

• (2) Honda 3200 Generators (2024/2025) with external fuel tank
• (2) New AGM Start Batteries
• (2) New 50' 30A Shore Power Cords (Eel brand)
• (1) 50A to 2×30A Splitter and (1) 30A to 2×30A Splitter
• (2) 12' Marinco 30A Power Cords
• (2) New Shore Power 30A Plugs
• New Galvanic Isolator to prevent stray current corrosion
• New BlueSea Breaker Panel for total circuit control
• (2) 16,000 BTU Air Conditioners w/ soft start capability
• (8) New 12V Fans throughout cabin
• New Electric Oil Change Tank for clean servicing
• (2) New Electric Heads with (2) 15-gal holding tanks, new hoses, gauges, and sending units
• All New Bilge Pumps, float switches, and high-water alarms

Solar Power System:

This high-capacity Renogy solar power system includes 1800W of panels, 1600Ah lithium storage, dual 3000W inverters, MPPT controllers, DC-DC chargers, and remote monitoring. Designed for off-grid or marine use, it delivers efficient, reliable energy with advanced cooling and full system control—ideal for long-term, self-sufficient power solutions.

• 1800 Watts of Solar Panels
• (4) 400Ah Renogy Rego Lithium Batteries = 1600Ah Total
• (2) Renogy Rego 3000W Inverter/Chargers
• (1) Renogy Rover 100A MPPT Solar Controller
• (1) Renogy Rover 60A MPPT Controller
• (2) Renogy 50A DC to DC Chargers
• Bluetooth/WiFi Renogy 1-Core Monitoring System
• (2) Hardwired Inverter Remotes
• (2) 3” Inline Thermostat-Controlled Cooling Fans for electronics bay

Interior Systems & Comfort

The interior has been fully modernized for elegant and efficient living, featuring upgraded lighting, salon finishes, galley appliances, plumbing, and entertainment. Comfort upgrades like Starlink internet, blackout curtains, and a Splendide washer/dryer make this a genuine liveaboard home.

• All-New LED Cabin Lighting throughout
• New Hydraulic Engine Hatches with electronic switches
• Seawater Pro Watermaker (40GPH) with UV-C purifier
• New 2-Gallon Accumulator Tank & New Fresh Water Pump
• 100-Gallon Freshwater Tank w/ New Tank Gauge
• Starlink Internet System for high-speed global coverage
• Salon Cushions (Sunbrella) and Blackout Curtains (New)
• Converted Guest Head to Dry Head (separate shower added)
• New Faucets in Both Heads and Showers
• New Shower Sump Pump
• New Induction Cooktop, Galley Faucet, Microwave, Air Fryer/Toaster Oven
• New Salon Refrigerator/Freezer + Top-Load Deep Freezer
• Screens for Hatches and Electronic Lock Safe
• Bluetooth Stereo w/ (2) Interior + (2) Exterior Waterproof Speakers
• (2) TVs (12V or 110V) w/ DVD Players
• Splendide Ventless Washer/Dryer Combo
• (3) New Fire Extinguishers

Exterior Features & Deck Equipment

“Sea Monster” offers extensive exterior upgrades focused on security, convenience, and luxury. From a new dodger and cockpit cushions to fuel expansion and a motorized dinghy lift, the vessel is built for ease of use and self-sufficiency.

• Reolink Motion-Activated Security Camera (WiFi enabled)
• New LED Cockpit Light
• New Freshwater and Saltwater Wash Down Pumps
• New Double-Sided Mobile Freezer
• Height-Adjustable Cockpit Table
• USB Charging Outlets in Cockpit
• New Sunbrella Cockpit Cushions
• New Dodger & Eisenglass enclosure
• Custom-Built Solar Arch w/ Dinghy Lift (can lift with drill-powered winch)
• Overhead Dinghy Light (Selectable Blue/White)
• New 70-Gallon Reserve Fuel Tank w/ Electric Transfer Pump
• (6) Diesel & (3) Gasoline Jerry Cans (All New - FEB 2025)
• (2) Aluminum Propane Tanks + New Magma Grill
• (2) New Props
• New Rudder Bushings
• All Sails in Good Condition

Tender & Safety Gear

Complementing Sea Monster, a well-equipped 2000 Lagoon 410, this 2023 Flexboat SR12LX dinghy offers a reliable and capable tender solution. Paired with a 2024 Suzuki 20HP electric start outboard, it includes a tri-color solar nav light with remote, anchor, fuel tank, lock, and a full USCG safety kit—ready for any excursion.

• 2023 Flexboat SR12LX Dinghy (11'6") with cushions, bow locker
• 2024 Suzuki 20HP Outboard with electric start
• Tri-color solar-powered Nav Light with Remote
• Dinghy Anchor, 6-Gallon Tank, Lock, and Full USCG Safety Kit

Summary

With over $150,000 in upgrades and countless hours of professional refit work, “Sea Monster” is an extraordinary Lagoon 410 catamaran built for serious cruisers. Every onboard system—from propulsion to solar, navigation, comfort, and safety—has been optimized for independence, efficiency, and reliability. Whether your plans include circumnavigation or anchoring off the grid for months, this boat is 100% ready to take you there.