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This Lagoon 500 (hull #97) was originally customized by a liveaboard, long-distance cruising family and sailed from France to Australia over 6 years as their children grew. It was purchased by her current owners in Australia, another liveaboard, cruising family of five. They completed their own circumnavigation, sailing west to the U.S. over six years. Her owners maintained and upgraded all safety and comfort features to a high level (lithium and solar, new rig, hardtop bimini). Now that her current owners children have left home, she is ready to take her next passengers around the world. Dafne II is blue-water ready and outfitted for a safe and comfortable home life.
Equipment: Engines & Drives 2x Yanmar 4JH4-TE 75 hp turbo charged engines 2x Yanmar SD60 sail drives (new 2020) Full engine spares including head gasket, molded hoses, and water pumps 2x 430-liter fuel tanks (960 liter total) Highfield 360 aluminum hull RIB with 30 hp Honda four-stroke outboard and center console (2018) Electrical 1200 ah Enerdrive lithium battery system with BMS (2018) 2x VICTRON QUATTRO 3000 Inverter Chargers (2018) 2x Enerdrive DC2DC chargers (2018) 2.1 kw solar - 4x 360 watt Sunpower panels mounted over the stern walkway (2018), 2x 310 panels on hardtop bimini (2020), 4x Tristar MPPT 60 controllers 220V Shore Power Pack ONAN GENSET 11Kva 1500rpm 220V / 50Hz COCOON 3x starter batteries 6x unit Cruisair A/C 48000 BTU 220V for 4 cabin version Stereo with speakers in saloon, cockpit, and flybridge Starlink internet (2023) Yacht Router 4G and wifi (2018) Iridium GO with external antenna (2018) Flatscreen TV (2020) Blue underwater lights (2023) Starlink 2023 Safety 10-person Plastimo liferaft (serviced 2023) Child netting surround on deck EPIRB ACR Ditch kit Flare, fire extinguishers, etc. 4x inflatable PFDs with integrated harnesses (2018) 1x personal AIS 5x harnesses 10x tethers jacklines Sails & Rigging Zoom radial-cut hydranet mainsail (2019) Rolly Tasker genoa (2024) Incidences Genoa Warp Drive Stormlite (2014) Standing rigging replaced 2019 by David Lambourne Riggers, Brisbane Seagull striker replaced 2020 with 19mm dyform & stalock shackles Custom aluminum crossbeam replaced in Cape Town (2023) due to corrosion on the original. Deck & Flybridge Hull painted in Coppercoat (2023) Hardtop bimini (2020) Quick electric windlass with remote at helm & chain counter (new motor 2020) 45kg Delta anchor 100m D12 chain (re-galvanized 2022) Spare plow anchor 100m nylon rode 5x Harken electric winches 2x hot/cold transom showers 2x swim ladders Salt/fresh deck wash at windlass Flybridge with cushions Forward cockpit with cushions and sunshade Aft cockpit mesh sun shade surrounds and full clear surrounds (2021) All exterior cushions new 2020 Instruments Raymarine Axiom Pro (2020) Raymarine Quantum radar (2020) 2x Raymarine ST70 multifunction displays (2020) Icom M506 VHF, with Commandmic at helm (2020) Icom ic-718 Digital marine SSB radio Class A Raymarine AIS650 Transceiver (2023) Raymarine ST70 autopilot, (new controller 2017, new ram 2020; (old ram rebuilt as backup) Galley/Interior BOSCH combined electrical oven & microwave (2018) Electrolux induction 4 burner cook top (2024) BOSCH low energy consumption 263L standing Fridge / Freezer Combination Bushman external freezer Full set of kitchen appliances (220v): Espresso maker, kettle, instant pot, bread machine, air fryer, rice maker, mixer, immersion blender, food processor, coffee grinder, etc. Miele washing machine/dryer Stainless gas grill on transom Water: 2x 480-liter water tanks 60-liter 1200w hot water tank Sea Recovery Aquamatic 220 liter/hr water maker (new membranes 2023) Four cabins, including 1 master cabin, each with ensuite bathroom Scirocco fans in each cabin, 2x in saloon (2019) Saloon windows professionally tinted All interior upholstery and curtains new (2020/2022)
The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.
Classic hull speed formula:
Hull Speed = 1.34 x √LWL
A more accurate formula devised by Dave Gerr in The Propeller Handbook replaces the Speed/Length ratio constant of 1.34 with a calculation based on the Displacement/Length ratio.
Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio.311
Hull Speed = Max Speed/Length ratio x √LWL
A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.
SA/D = SA ÷ (D ÷ 64)2/3
A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.
Ballast / Displacement * 100
A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.
D/L = (D ÷ 2240) ÷ (0.01 x LWL)³
This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.
Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam1.33)
This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.
CSV = Beam ÷ ³√(D / 64)
Replaced with LAGOON 52.
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