
The Island Spirit 525 implements the best of what clients like, including walk through salon, forward seating area and some trampoline, large flybridge, aft seating area for group meals, large galley and storage area, all en-suite cabin configurations, and crew accommodations. With a generous sail plan and relatively light displacement, this model will be a very powerful sailing catamaran.
Technical Specifications
Length Overall: 51.73ft (15.77m)
Beam: 26.9ft (8.19m)
Draft: 5.05ft (1.54m)
Displacement: 36,376 Lbs (16.5 Tons)
Fuel Capacity: 264 Gallons (1,000 L)
Water Capacity: 264 Gallons (1,000 L)
Mainsail Area: 1,313ft2 (122m2)
Jib Area: 592ft2 (55m2)
Sail Area: 1,905ft2 (177m2)
Cabins: Up to 6 cabins, each has en-suite head & shower, with 2 optional forepeak cabins
Electric Drive Option
Group Island Spirit partnered with major system developers in the EV industry to develop an electric drive system that is affordable, safe, reliable, and functionally practical. E-Drive system characteristics:
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- Powerful range extender that will charge the system at 55KWh
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- Powerful drive motors with a 65kW (88hp) rated power
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- Large E-drive system storage with 210KWh
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- Supplemental solar charging up to 4.8kW
The design of the boat is very efficient; only requiring 37kW to power the boat at 8 knots giving sufficient run time in daily charter operations and unlimited range while running the range extender.
Highlights
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- Design criteria CE Category A
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- General Livability Features
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- Flexible cabin configurations (3, 4, 5, or 6 cabin configurations with 2 optional forepeak cabins)
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- Cabins of equal size and every cabin has en-suite head and shower
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- Queen size beds in every cabin with ample storage underneath
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- Loads of natural cabin light
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- Walk through salon to forward seating area with built in sunshade
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- Large aft seating area for group meals and entertaining
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- Large entertaining galley area
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- Lots of storage
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- General Livability Features
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- Large Flybridge
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- Dual access flybridge
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- Large flybridge seating area
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- Integrated hardtop bimini design for optimum solar implementation
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- Aft sundeck or optionally used for additional solar capacity on the E-Drive model
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- Large Flybridge
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- Drive Options
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- Full electric drive option, shaft drive
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- Diesel sail drive – 45 or 57 horsepower
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- Drive Options
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- All Industry Standard Gear
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- Standard Yanmar diesel saildrives
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- Commercially available EV platform components
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- Maximally efficient inverter based climate control systems from Frigomar SRL
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- World class sailing rig and deck gear from Selden AB
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- Hatches, steering gear, etc from Vetus
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- Electrical components from Mastervolt
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- All Industry Standard Gear
Hull and Deck
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- FRP with PVC closed cell foam resin infused E-Glass uni-directional and double bias, built according to CE Standards category A
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- Non-skid on decks, coach roof and transom areas
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- Polyester trampolines on bow
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- PVC closed cell foam cored bulkheads and cabin soles, no plywood bulkheads
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- Composite thru-hull fittings
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- Hull and deck laminated and bonded
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- Two (2) Hatches in coach roof
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- Polycarbonate salon windows fitted with Sikaflex
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- Anchor and stowage lockers forward of mast
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- Sail locker forward of the mast
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- Two (2) opening forepeak hatches
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- 316 Stainless steel pulpits with seating
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- Engine room access hatches on transoms
Deck Hardware
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- Six (6) opening deck hatches
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- 316 Stainless Steel stanchions
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- 316 Stainless Steel boarding ladder and hand grips on port transom
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- Two (2) deck water fillers
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- One (1) deck fuel fillers
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- Two (2) deck waste evacuation ports
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- Electric anchor windlass 1500w
Mast and Rigging
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- Selden aluminum mast
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- Selden aluminum boom with in boom single line reefing
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- Mast lighting includes: LED steaming light, deck spreader lights and anchor light
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- Rope-clutches installed on mast for jib and screecher/spinnaker halyards.
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- Main sheets, main halyard, main sheet, jib sheet, jib furling line, topping lift Reef 1 & 2, led aft to helm stations
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- Standing rigging 316 SS wire
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- 316 SS chain-plate for shrouds
Sail Handling and Running Rigging
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- Selden electric winches in the flybridge (Optional)
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- Selden or similar Jib furling system
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- Selden Jib tracks, cars, blocks and clutches
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- Selden running rigging and blocks
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- Selden single line reefing system
Sails and Canvas
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- Jib: 592ft2
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- Main sail:1,313ft2
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- Two reefing points
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- Sail Bag and lazy jacks
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- UV leech protection on Jib
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- Optional in mast furling with reduced sail area
Salon
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- Salon forward door into foredeck area
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- Aft sliding door to aft cockpit
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- Panoramic view through large fixed side and front windows
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- Two (2) opening forward hatches
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- Salon bench seats
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- Composite accent trim
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- Two (2) cabin access companionways
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- Upholstered seating areas
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- LED down lighters in saloon
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- LED Courtesy floor lighting
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- Two (2) overhead opening hatches
Galley
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- Large wrap around galley
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- Corian thermoformed counter tops
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- 250L Vitrifrigo refrigerator
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- 70L Vitrifrigo selectable refrigerator or freezer
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- Techimpex Topline cooktop 4 burners
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- DOMETIC Oven and flush-mount gas grill
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- Sink with hot and cold water faucet
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- Overhead storage cabinets
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- Cabinets for storage
Cockpit
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- Storage under rear seating
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- Ice box in aft seating area
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- Large dining table and seating
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- Cockpit cushions
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- Overhead LED lighting
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- LED Courtesy floor lighting
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- Access to flybridge from both sides
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- Large engine hatches for access to engine rooms
Flybridge
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- Large helm station with seating for two
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- Wrap around seating with tables
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- Flybridge table converts to a berth/daybed (Optional)
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- Full composite flybridge hardtop
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- Canvas flybridge surrounds (Optional)
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- Overhead LED lighting
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- Pop up courtesy lighting
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- LED Courtesy floor lighting
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- Four (4) USB charging plugs
Forward Cabins (2)
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- Queen size berth orientated starboard to port
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- Large storage area under berth accessed via hinged bed access with gas shocks
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- Hanging locker with shelf storage
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- Overhead LED lighting
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- Two (2) Reading LED light
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- Four (4) USB charging ports
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- One (1) opening overhead hatch
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- One (1) opening port light
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- Interior marine vinyl wall covering with composite trim
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- Marine grade composite flooring
Center Cabins (2)
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- Queen size berth orientated starboard to port
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- Large storage area under berth accessed via hinged bed access with gas shocks
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- Hanging locker with shelf storage
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- Overhead LED lighting
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- Two (2) Reading LED light
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- Four (4) USB charging ports
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- One (1) opening overhead hatch
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- One (1) opening port light
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- Interior marine vinyl wall covering with composite trim
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- Marine grade composite flooring
Aft Cabins (2)
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- Queen size berth orientated forward to aft
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- Large storage area under berth
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- Overhead LED lighting
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- Two (2) Reading LED light
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- Four (4) USB charging ports
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- One (1) opening overhead hatch
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- One (1) opening port light
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- Interior marine vinyl wall covering composite trim
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- Marine grade composite flooring
Head and Shower (6)
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- Integrated toilet and shower compartment FRP
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- Electric Toilet sea water flush
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- Installed freshwater “Bumgun”
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- 41L Black water tank
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- Corian top with basin
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- Overhead LED light fixture
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- Tissue roller
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- SS towel/clothing loops and hooks
Engine and Machinery
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- Twin 57 HP Yanmar 4JH57 diesel engines with SD60 sail drive
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- 3 blade Eliche Radiche aluminum 17′ x 15 pitch propellers
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- Fresh water engine cooling system
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- Engine instrument panel at helm position
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- Fuel tanks in polyethylene 2 x 500L / 264 gal
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- Racor 500 series fuel filter/water separator
Optional E-Drive System
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- Twin 65kw rated, 88HP electric permanent magnet motors
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- Shaft drive with bronze propellor
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- Electric engine cooling system
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- Color engine instrument panel at flybridge helm position
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- 210kw main engine battery banks
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- 55kw main battery generator
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- Racor 500 series fuel filter/water separator
Plumbing
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- 30 gallons per hour 220v water maker (Optional)
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- Two automatic bilge pumps (1,000 GPH each), one in each hull
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- Two manually operated bilge pumps 35 gal/min
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- Hot and cold pressure water system
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- Two (2) 500 L / 132 gal Fresh water tanks
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- Deck shower on port transom
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- Two (2) 42 L / 11 gal hot water heater
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- Two (2) Parmax 4 pressure water pumps
Electrical in Diesel Vessels
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- Voltage: 12v DC
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- Custom 12v DC electrical distribution panel with circuit breakers
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- House: deep cycle total 675AH to run all domestic services
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- Engine start battery: two (2) 120AH battery
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- Wiring – all fully tinned marine wiring
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- Lighting throughout will be 12v DC
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- Mast lights, navigation lights, anchor light, steaming light
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- 25 amp shore power battery charger
Electrical in E-Drive Vessels
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- Voltage: 24v DC
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- Custom 24v DC electrical distribution panel with circuit breakers
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- 6000w 24v – 120v Inverter charger
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- House: 2000ah, 48kWh LifeO4 house battery bank
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- Wiring – all fully tinned marine wiring
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- Lighting throughout will be 12-24v DC
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- Mast lights, navigation lights, anchor light, steaming light
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- 2kW solar panels on the Bimini top
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- 300 amp shore power battery charger
Navigation and Electronics
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- Compass at helm stations with light
Interior Finish
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- Grey composite and Vinyl marine wall covering with upholstered Ceilings and grey composite
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- Cushions for settees to be of high grade foam of 75-100 mm
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- Mattresses: 4” High grade foam
Gallery

















