O-Yachts Class 4
Performance Offshore Carbon Catamaran
O-Yachts Class 4
If you’re looking for a Secure, Fast but Spacious catamaran from 46 to 53ft, Class 4 is a wonderful platform fast and easy-to-sail (short handed). You achieve over 250miles per day in comfort.
What is so unique with O Yachts catamarans : 100% carbon structure and finish with complete hand lamination for non structural parts. That explains Class 4 is the lightest catamaran in his category with CE certification.
100% CARBON STRUCTURE
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- Carbon Front beam
- Carbon Bow pole
- Carbon Mast pilar
- Carbon Mast bulkhead
- Carbon builkheads reinforcements
Class 4 is a light displacement (from 7500kg) due to the quality of workmanship and top material/brands used. She will definitely shine in any race, with a slim hull to guarantee exceptional upwind angle. If you do not race and just cruise in family, such performance is key for security and sea motion during long passages. The best way to avoid bad weather forecast is to go away or arrive to destination … fast.
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- Light displacement from 7500kg
- Extensive customisation for cockpit, interior, rigging..
- Comfortable cabins with 2 large beds (165x200cm) aft – Head with separate shower
- Aft platform for tender or just for pleasure at anchor
Exceptional rigidity with complete “hand lamination”
Where most shipyards use lamination process* for bulkheads and few elements, at O YACHTS 90% of furnitures (sofa, kitchen, bed, floor, cabinets, walls…) are made of infused panels (not just a sandwich with foam and wood) then our specialists pass hundreds of hours to laminate with both glass and resin those elements to the structure. We do not just “glue” things together with sika or other glue to assemble elements, we assemble with glass and resin, that is much longer but more robust.
Hand lamination benefices :
. stiffness
. long lasting
. what is non structural becomes structural
. no noise when walking
Lamination process consist in cutting glass fiber pieces that we will glue with resin to elements. Then we have to sand and most of time do the process twice. Once done, both elements are sealed one to the other. Lamination is the only way to make elements structural, if you just glue, this is not ! So imagin when you just put panels free … nothing become structural. This is what you have for floors on most catamarans. Floor are removable and not structural. At O Yachts for instance, we laminated and create openings for access … that is much longer process but so robust !
O-Yacht Class 4 Details
SPECIFICATIONS
Architect: Erik LEROUGE
Design: O Yachts – Denn CLIFFORD
Hull length: 46ft
Beam: 25ft
Light disp.: 7.5T
Payload: 1.9T
Mast: 64Ft aluminum
Rigging: Dyform upper and inner shrouds
Main sail: 85m2
Solent: 34m2
Genoa: 74m2 (option)
Engines: 2 x 30hp Yanmar (or similar)
Fuel: 2 x 190l
Water: 350l
Warranty: 5 years structure
CORE MATERIAL
– Gelcoat ISO NPG
– Vinylester resin parement
– Resin polyester for structure
– PVC foam for sandwich
Carbon Structure:
– Carbon Front beam
– Carbon Bow pole
– Carbon Mast bulkhead carbon reinforced
– Carbon Mast pillar and his bulkhead
– Carbon reinforced aft beam
All catamaran made with quality PVC foam and few PET (for non-structural).
OPTION: Vinylester resin for all boat
OPTION: Epoxy resin for all boat
OPTION: carbon hull, deck and bulkheads
IMPORTANT –
Only O Yachts finish catamarans with complete “hand lamination” to connect all panels. To provide exceptional rigidity, we build many parts of furniture with infused panels (not a light foam and wood laminate). Then we pass hours and hours to connect each panel one to another with glass/resin and lots of sanding process; where other shipyards only glue or screw elements. Floors, beds, sofas… all is connected to make each element part of the structure. Those panels are not listed as “structural” from naval architect but they are becoming structural after the process. Other benefice, you walk in your Class 6 and will never hear any “crack” from floor and furniture.
KEEL & DAGGERBOARD
– Keel with NACA Profile
OPTION: Carbon daggerboard
MAST AND RIGGING
– 19.6m aluminum mast
– Dyform shrouds
– Monotoron forestay for Solent with furler
– Pad eye for Lazy jacks
– Exits on mast for: mainsail, solent, genoa, spinnaker, boom lift
– Rail with 12 positions for genoa halyard
– Main sail rail with car roll bearing
– Led anchoring light
– Led navigation light
– Steaming light
– Deck light
– 3 padeyes for reef lines
– Wind weathervane
– Aluminum boom ready for lazy bag
– Lazy bag Lazy jack
– Furler for Solent
OPTION: Carbon mast
OPTION: Carbon wing mast
OPTION: Textile shrouds
OPTION: Carbon canoe boom
OPTION: Carbon main sail hydraulic furling boom
RUNNING RIGGING Mix Dynema
– Main sail halyard 2 :1 system. Main sail sheet
– Main sail border control
– 3 reefs sheets / 3 reefs lines on mast
– Genoa halyard with cleat
– Solent halyard with cleat
– Solent furler line
– Boom lift
OPTION: Full 100% Dynema lines
OPTION: Self Tacking equipment
OPTION: Genoa and equipment
OPTION: Spi and equipment
OPTION: Code0 and equipment
WINCHS / CLEATS
– 1 ST50 winch at steering
– 1 ST46 winch on mast for front sails halyards (solent, genoa…) and lazy
– 2 ST50 winches on cockpit sides for Code0, Spi and main sail cars
– 2 blocks for main sail management with control at steering
– Self-tacking Solent with rail
OPTION: Genoa, Code0 and Sip equipment
OPTION: Main sail on rail
OPTION: Electric winch
OPTION: Electric furlers
SAILS
– Dacron main sail with 3 reefs with battens
– Dacron Solent with furler
OPTION: Tri-radial Dacron main sail and Solent
OPTION: Tri-radial Hydranet main sail and Solent
OPTION: Tri-radial Dacron genoa
OPTION: Tri-radial Hydranet genoa
OPTION: Spinnaker or Asymmetric
OPTION: Screecher
STEERING
– Steering wheel on starboard cabin bulkhead
– Seating with cushions
– Complete area for instruments
– Self-aligning rudders shaft
OPTION: 2 manual tillers
OPTION: 2 wheels aft cabin
OPTION: Carbon rudders
DECK EQUIPMENT
– 6 cleats aluminum
– Windlass 1200W
– Anchor 30kg Delta with 50m chain 10mm
– Davit integrated into the front spine
– 8 portlights
– 2 hatches for front cabin, 2 hatches for engine room, 2 hatches for front lockers
– Stanchions 60cm
– Two line stanchions
– 2 fuel in, 1 water in, 1 waste out
– Hand rail on roof
– Net with 30×30 holes
OPTION: complete aluminum hand rail stanchion system to replace stanchion lines
OPTION: Long bench on front pulpit
OPTION: Mooring lines and fenders
COCKPIT / BIMINI
– As standard long Bimini
– Long U bench starboard
– Small bench portside
– Cockpit table
– Lockers under seat where possible
OPTION: Soft tent all around cockpit
OPTION: carbon davits for tender
OPTION: flat carbon area between davits for solar panel
TRANSOM
– Long transom with ladder
– Shower hot / cold one side
– Emergency tiller
– Gangway support on both side
OPTION: design logo lights on transom
OPTION: sea water light on transom
OPTION: Watt and Sea system integrated
ENGINE
– Yanmar 30hp with Saildrive x 2
– Display for RMP and control panel x 2
– Manual control for engines
– Water strainer x2
– Fuel filter x 2
– Water lock / Exhaust x 2
– Insulation foam on bulkhead
– 90Ah AGM engine battery x 2
– 2 x 190l fuel tank with gauges
OPTION: Other brand or model diesel engine
OPTION: Folding propellers
OPTION: Electric engine control
OPTION: OceanVolt electric propulsion system
ELECTRICITY AND LIGHTS
– All light system with Led bulbs or strips
– Utility LED lights for engine and front peak
– Cockpit lights
– 12V battery bank with 2 x 200Ah 12V
– Battery monitor with percent and numbers
– Complete custom electrical panel with auto fuse at chart table
– 12V alternator 115Ah x 2
– Battery charger 30A
– Pier 220V station connected to plugs (kitchen, saloon, chart table, cabins)
OPTION: Lithium battery
OPTION: More AGM or GEL batteries
OPTION: Solar panels 500 to over 1000w
OPTION: Watt and Sea generator
PLUMBING
– Fresh water pump with buffer tank
– 350l about tank integrated into structure
– 1 boiler 40l
– 4 bilges pump with automatic switch
– 2 manual bilge pumps for security
– 2 shower pumps
– 2 WC and 1 with black water tank
OPTION: 12V Watermaker 100l/h
OPTION: More fresh water capacity
OPTION: Sea water at kitchen
OPTION: Electric WC and black water tank
OPTION: Complete fresh water filtration with UV treatment and filters
MULTIMEDIA
– Radio system Bluetooth type speakers x 6 to connect your preferred media
OPTION: So many solutions are coming each year, we will adapt to any of your choice
KITCHEN
– Quality 3 burner stove with oven
– 1 fridge / freezer 130l
– 1 large sink and one small
– Integrated bin below worktop
– Drawers and door cabinets
– Gas bottle (your choice for system)
OPTION: Micro Wave
OPTION: bigger or more refrigeration
OPTION: dish washing machine
OPTION: cloth washing/drying machine
AIR COND. / HEATING
This are options. Heating is light and easy to install. Air Conditioning may be easy and not too heavy if we only focus on master cabin. With large lithium battery bank we can power AC with the help of large solar panel area. But if you want saloon area with Air Conditioning, then we will require a very large and heavy generator. This is easy to install as we have different solutions ready but this is once again a lot of added weight. For those who like to race, we propose to pre-install pipes, tubes… for future resale of yacht.
OPTION: heating all boat
OPTION: air conditioning cabins
OPTION: air conditioning all boat with added AC Generator
ELECTRONIC
As standard, Class 4 comes without electronic. We have lots of options but the one below is excellent for cruising.
OPTION: B&G electronic wind, loch, depth pack
OPTION: Triton T41 display x 3
OPTION: B&G Pilot pack Triton
OPTION: B&G remote command for Pilot
OPTION: B&G VHF + AIS
OPTION: NAIS 400 NAVICO Class B (send/receive)
OPTION: B&G map reader 7’’ x 2
OPTION: B&G radar 4kw
OPTION: B&G GPS antenna ZG100 Zeus
OPTION: B&G Mini gyros RC42n
OPTION: B&G rudder angle sensor
OPTION: Raymarine pilot engine
OPTION: B&G VHF mast antenna
OPTION: SIMRAD antenna splitter
SAFETY
Safety equipment needs to match regulations of Yachts flag. We will assist owner in this direction but all equipment to be the responsibility of Owner.
We have dedicated spaces for main elements such as life raft, buoy, life lines
LAYOUT
As standard, we offer 3 cabins. One Master cabin portside or starboard (your choice) and 2 guest cabins. O Yachts is dedicated to custom interior and we offer lots of solutions. Finish with O Yachts standard easily match competition. But we strongly recommend you to create your own space as option.
OPTION: you create with interior designers your space your style. You will request 3D views for your interior and we will execute internally detailed execution plans.
