Class 6

  • Overview

    Class 6 is made for a couple to live onboard for sabbatic with 4 principles, and of course easier in Charter mode. Please visit Class 6 N°1 page

    • Huge space to feel like home
    • Sailing management solo
    • REAL performances in comfort
    • Easy to maintain

    Laurent BOURGNON, designed basis, for Class 6 to achieve our principles.

    • Longitudinal beam for mast to give comfort in heavy seas and enlarge living area
    • High freeboard to feel confident in any sea condition
    • No front beam for better waves  passage in heavy seas
    • Mast position aft to reduce main sail area
    • Very long bimini to protect from the sun
    • Optional aft platform for easy passage from yacht to sea
     

     "SPINE CONCEPT" - The secret to combine Space and Performance

    So far there was a clear opposition between living area and performance, that is due to the structure to carry mast load.
    On a traditional catamaran, the mast is seating on a TRANSVERSAL BULKHEAD - behind it is saloon. You understand therefore that Charter Oriented catamarans tend to push this bulkhead further in front to maximise living area in saloon. This is clearly a disaster in term of sea motion and performance. That explains fast catamarans tend to position mast more aft, just after the center of boat, but the living area is quite small.

    Class 6 is clearly different, we position mast load on a LONGITUDINAL BEAM. You are now free to have saloon after the mast position. With 42m2 living area, Class 6 is a record breaking for space - but remember we have racing pedigree and mast is positioned exactly where it needs to be. The saloon area is perfectly balanced in center of boat.

    So many advantages :
      . more living area for your saloon and kitchen
      . better sea motion as we position mast aft without sacrifice to space
      . extra rigidity from design and even more as we use 100% carbon
      . extra buoyancy to lift "nose up" in heavy sea
      . easy sailing with reduced main sail and large front sails on furlers

    SPINE  Class 6  Spine Conceptvertical 

    MAST POSITONED PERFECTLY AFT

    Charter oriented catamarans position mast forward, as they want to offer maximum living area. The transversal beam below the mast is limiting the space between saloon and outside of boat. This is why you see most charter catamarans with a long boom and reduced front sail. That is a desaster in term of sea motion.
    Performance catamarans position the mast just after middle of boat to get acceptable living area and good sea motion.
    CLass 6 is not limiting living area to mast position, as we use the longitudinal beam to position the mast exactly where we need, to achieve perfect sea motion. You now have both worlds, with huge space for living and exceptional performances.

    Once again so many advantages :
    . Smaller main sail area
    . Reefing is easier as area is reduced
    . Reefing is delayed as you first reduce front sails
    . Sail reduction is so easy for front sail and specialy with electric furlers
    . Exceptional upwind performances as Code0 is huge
    . Exceptional upwind perfornaces as Code0 is tack inside shrouds for perfect angle. Better sea motion as we position load near center mass

     Class 6 Sructure Classicsml Class 6 Sructure SpineConceptsml 

     class 6 mast position living area

     

    PERFORMANCE = SECURITY

    The best way to get out any bad weather forcast is speed. You must be ready to move over 250 miles away to get out of depression. Class 6 is able to achieve 300 miles with constant wind.
    More than "Performance", we prefer "Easy Sailing". On Class 6 a solo sailor can manage the boat without stress. The reduced main sail delay reefing as you first roll the front sail with the push on a button (thanks to electric furlers). When you need to reef, you understand that a 6m boom with 90m2 is about the same as a 50Ft boat. You will give less efforts to reduce main sail.

    100% Carbon sturcture the first step for performances

    Any serious catamaran sailor will say that WEIGHT is number 1 factor for speed. Carbon is standard on Class 6 where deemed necessary. Carbon is not only good to save weight, this is the best way to make the yacht strong as a rock. That is why we decided to offer carbon structure to Class 6 owners.

    . Carbon mast pilar
    . Carbon longitudinal beam (over 80cm high)
    . 5 Carbon bulkheads

     Class 6  Carbon Structure

    KEEL VS DAGGERBOARD

    We do not want to take an personal position at O Yachts as we think both have pros and cons. We list below a few ideas to support your choice.

    Class 6 offer a choice of :
     
    .  NACA profil keel
     .  Carbon symetric daggerboard
     .  Carbon asymetric curved daggerboard

    Class 6  Frontview Daggerboard  KEEL PRO
    . Free payload. With Archimed theorem you understand that keel volume is pushing boat up.
    . Very simple compared to daggerboard management
    . Good protection for propeller and rudder
    . Possibility to land, this make easy repair and antifouling
    . Cheaper solution to build than daggerboard
    . More space for interior as you have no daggerboard casing
    . Reliable as nothing is moving
    DAGGERBOARD PRO
    . Better upwind angle with about 5% gain
    . Better overall performances as few drag (about 4%)
    . Positive lift (about 1000kg) with asymetric curved daggerboard 

    Before buying a cat, you should know …. about hull/deck

    When buying a catamaran one should pay attention on what is not visible. Most shipyards are now only using infusion process to build hull/deck. Infusion is the first step to build good yachts with a sandwich of 3 « ingredients » : 1) foam in the middle 2) fibre on both sides (usually glass) , 3) resin injected using infusion process to assemble it all. BUT you should know …

    Foam : we are defacto excluding wood such as balsa (heavy) and prefer PVC or PE foam. But shipyards can use non branded material with few control or branded material with low mechanic properties.  Price range from 1 to 3. At O Yachts, we take the time to explain to future owners the pros and cons of each material to balance cost and quality.
    Foam design : for infusion, resin must migrate from one side of the foam to the other, to make all fibre perfectly wet of resin. Foam have holes and grooved lines to conduce resin everywhere. Most shipyard use foam that will pass a lot of resin to make sure no fibre is dry … and therefore use design like « resin highway ». That means you have a lot of weight unneeded with resin. At O Yachts we can work using minimalist holes and groove to pass as few resin as possible.
    Resin : most boats are built using Polyester but you might want better quality resin such as vinylester or even better epoxy. Price range from 1 to factor 10. If you build a boat with Gelcoat, you may also have vinylester for gelcoat to offer osmosis parement, then build hull with polyester. The best is to build it all with epoxy, to offer rigidity, anti osmosis and reduced weight. As we do not put Gelcoat/Glass Mat, this is about 400kg saved. You will have a nice painting to finish the boat.
    Fibre : most boats are made of glass but you might be interested with Kevlar/twaron reinforcement on the wet area. Carbon is systematically used  for highly loaded areas such as mast pilar / mast bulkhead / structural beams. Carbon offers excellent rigidity and reduced weight. We would not recommend a full carbon hull as this is giving metallic sound to hull and each impact with waves is turning your boat into a drum… At O Yachts we use lot of carbon defacto for high loaded area and we can propose Secret mix of carbon and other fibre to combine rigidity, weight and sound insulation. Price range from 1 to 40.
    Gelcoat or Painting : as mentioned earlier replacing gelcoat with paint is an excellent strategy for weight saving.

    What makes O Yachts catamarans so distinguished ?

    Exceptional rigidity
    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 !

    hand lamination

    NB : once finished, none can say whether this is infused panel or just sandwich as we cover with wood or painting

  • Overview

    Class 6 is made for a couple to live onboard for sabbatic with 4 principles, and of course easier in Charter mode. Please visit Class 6 N°1 page

    • Huge space to feel like home
    • Sailing management solo
    • REAL performances in comfort
    • Easy to maintain

    Laurent BOURGNON, designed basis, for Class 6 to achieve our principles.

    • Longitudinal beam for mast to give comfort in heavy seas and enlarge living area
    • High freeboard to feel confident in any sea condition
    • No front beam for better waves  passage in heavy seas
    • Mast position aft to reduce main sail area
    • Very long bimini to protect from the sun
    • Optional aft platform for easy passage from yacht to sea
     

     "SPINE CONCEPT" - The secret to combine Space and Performance

    So far there was a clear opposition between living area and performance, that is due to the structure to carry mast load.
    On a traditional catamaran, the mast is seating on a TRANSVERSAL BULKHEAD - behind it is saloon. You understand therefore that Charter Oriented catamarans tend to push this bulkhead further in front to maximise living area in saloon. This is clearly a disaster in term of sea motion and performance. That explains fast catamarans tend to position mast more aft, just after the center of boat, but the living area is quite small.

    Class 6 is clearly different, we position mast load on a LONGITUDINAL BEAM. You are now free to have saloon after the mast position. With 42m2 living area, Class 6 is a record breaking for space - but remember we have racing pedigree and mast is positioned exactly where it needs to be. The saloon area is perfectly balanced in center of boat.

    So many advantages :
      . more living area for your saloon and kitchen
      . better sea motion as we position mast aft without sacrifice to space
      . extra rigidity from design and even more as we use 100% carbon
      . extra buoyancy to lift "nose up" in heavy sea
      . easy sailing with reduced main sail and large front sails on furlers

    SPINE  Class 6  Spine Conceptvertical 

    MAST POSITONED PERFECTLY AFT

    Charter oriented catamarans position mast forward, as they want to offer maximum living area. The transversal beam below the mast is limiting the space between saloon and outside of boat. This is why you see most charter catamarans with a long boom and reduced front sail. That is a desaster in term of sea motion.
    Performance catamarans position the mast just after middle of boat to get acceptable living area and good sea motion.
    CLass 6 is not limiting living area to mast position, as we use the longitudinal beam to position the mast exactly where we need, to achieve perfect sea motion. You now have both worlds, with huge space for living and exceptional performances.

    Once again so many advantages :
    . Smaller main sail area
    . Reefing is easier as area is reduced
    . Reefing is delayed as you first reduce front sails
    . Sail reduction is so easy for front sail and specialy with electric furlers
    . Exceptional upwind performances as Code0 is huge
    . Exceptional upwind perfornaces as Code0 is tack inside shrouds for perfect angle. Better sea motion as we position load near center mass

     Class 6 Sructure Classicsml Class 6 Sructure SpineConceptsml 

     class 6 mast position living area

     

    PERFORMANCE = SECURITY

    The best way to get out any bad weather forcast is speed. You must be ready to move over 250 miles away to get out of depression. Class 6 is able to achieve 300 miles with constant wind.
    More than "Performance", we prefer "Easy Sailing". On Class 6 a solo sailor can manage the boat without stress. The reduced main sail delay reefing as you first roll the front sail with the push on a button (thanks to electric furlers). When you need to reef, you understand that a 6m boom with 90m2 is about the same as a 50Ft boat. You will give less efforts to reduce main sail.

    100% Carbon sturcture the first step for performances

    Any serious catamaran sailor will say that WEIGHT is number 1 factor for speed. Carbon is standard on Class 6 where deemed necessary. Carbon is not only good to save weight, this is the best way to make the yacht strong as a rock. That is why we decided to offer carbon structure to Class 6 owners.

    . Carbon mast pilar
    . Carbon longitudinal beam (over 80cm high)
    . 5 Carbon bulkheads

     Class 6  Carbon Structure

    KEEL VS DAGGERBOARD

    We do not want to take an personal position at O Yachts as we think both have pros and cons. We list below a few ideas to support your choice.

    Class 6 offer a choice of :
     
    .  NACA profil keel
     .  Carbon symetric daggerboard
     .  Carbon asymetric curved daggerboard

    Class 6  Frontview Daggerboard  KEEL PRO
    . Free payload. With Archimed theorem you understand that keel volume is pushing boat up.
    . Very simple compared to daggerboard management
    . Good protection for propeller and rudder
    . Possibility to land, this make easy repair and antifouling
    . Cheaper solution to build than daggerboard
    . More space for interior as you have no daggerboard casing
    . Reliable as nothing is moving
    DAGGERBOARD PRO
    . Better upwind angle with about 5% gain
    . Better overall performances as few drag (about 4%)
    . Positive lift (about 1000kg) with asymetric curved daggerboard 

    Before buying a cat, you should know …. about hull/deck

    When buying a catamaran one should pay attention on what is not visible. Most shipyards are now only using infusion process to build hull/deck. Infusion is the first step to build good yachts with a sandwich of 3 « ingredients » : 1) foam in the middle 2) fibre on both sides (usually glass) , 3) resin injected using infusion process to assemble it all. BUT you should know …

    Foam : we are defacto excluding wood such as balsa (heavy) and prefer PVC or PE foam. But shipyards can use non branded material with few control or branded material with low mechanic properties.  Price range from 1 to 3. At O Yachts, we take the time to explain to future owners the pros and cons of each material to balance cost and quality.
    Foam design : for infusion, resin must migrate from one side of the foam to the other, to make all fibre perfectly wet of resin. Foam have holes and grooved lines to conduce resin everywhere. Most shipyard use foam that will pass a lot of resin to make sure no fibre is dry … and therefore use design like « resin highway ». That means you have a lot of weight unneeded with resin. At O Yachts we can work using minimalist holes and groove to pass as few resin as possible.
    Resin : most boats are built using Polyester but you might want better quality resin such as vinylester or even better epoxy. Price range from 1 to factor 10. If you build a boat with Gelcoat, you may also have vinylester for gelcoat to offer osmosis parement, then build hull with polyester. The best is to build it all with epoxy, to offer rigidity, anti osmosis and reduced weight. As we do not put Gelcoat/Glass Mat, this is about 400kg saved. You will have a nice painting to finish the boat.
    Fibre : most boats are made of glass but you might be interested with Kevlar/twaron reinforcement on the wet area. Carbon is systematically used  for highly loaded areas such as mast pilar / mast bulkhead / structural beams. Carbon offers excellent rigidity and reduced weight. We would not recommend a full carbon hull as this is giving metallic sound to hull and each impact with waves is turning your boat into a drum… At O Yachts we use lot of carbon defacto for high loaded area and we can propose Secret mix of carbon and other fibre to combine rigidity, weight and sound insulation. Price range from 1 to 40.
    Gelcoat or Painting : as mentioned earlier replacing gelcoat with paint is an excellent strategy for weight saving.

    What makes O Yachts catamarans so distinguished ?

    Exceptional rigidity
    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 !

    hand lamination

    NB : once finished, none can say whether this is infused panel or just sandwich as we cover with wood or painting

  • Specifications

    Length: 59" / 17.9m short tail - 63ft/19.5m Normal tail
    Waterline: 59" / 17.9m short tail - 63ft /19.5m Normal tail
    Beam: 28" / 8.98m
    Boards: 4"/12.5" / 1,25/3.8m
    Displacement: 28600lbs / 12.5T Load : 6T
    Mast: 78' 4" - 140sqft / 23,90m - 13m²
    Mainsail: 10330sqft / 102m²
    Genoa: 1290sqft / 100m2
    Headroom: 6' 7" / 2m
    Strucure Guarantee 5 Years. Carbon bulkheads / Mast Pilar / Reinforcements - Sandwich glass hull / deck / roof
  • Layouts

    - 44 m2 Living area from Cockpit to Saloon -
    This is a record breaking to feel like home

     Class 6 44m2  Class6num1

     

    We designed the structure in order to offer the largest opening between cockpit and living area - to feel like an apartment. If you put the same floor in cockpit and saloon, you enforce the feeling of space and volume. We also designed interior living area with water drain, so you can clean interior and cockpit with clear water at the same time.

    Below sample design for Owner oriented catamaran

    O Yachts is specialized in semi custom yachts. We have ready designs for 1, 2 or 3+skipper hull designs.
    You may also appoint your own interior designer or ask for our recommended specialists  - French, Italian and Russian -  interior designers to create a custom one-off interior. At O Yachts we keep the Baltic carpentry reputation high.

     Class 6 Layout 3 cabins

    Below is one large Master cabin, 2 guests cabins and one skipper cabin with separate access from forward.

    Class 6 Number 1 layout

    Below sample design for Charter oriented

    Class 6  layout Charter

    Class 6 Layout Charter 4

    Class 6 Layout Charter 3

    Class 6 Layout Charter 2

     

     

     

     

     

     

     

  • Exterior

    Cockpit area is your decision, we have a huge space for you to design.
    Bimini is protecting from sun and rain and we can add many options such as opening ...
    We can position steering :
       - One wheel on one side, on cabin bulkhead
       - One wheel central, on cabin bulkhead
       - Two wheels on cabin bulkhead,
       - Two wheels aft away from cockpit area

    Class 6  Top
    With the central beam that looks like a sharpe hull, you split the waves before they impact the wet deck.

    STEERING

     Since our yachts are semi-custom, steering (as many other elements) will be the Customer's choice.
    The first boat being ordered is currently being designed with 2 wheels positioned on the cabin bulkhead. There is no perfect definitive solution, and we will help our Customers to make-up THEIR own solution. The 2 wheels, longitudinally centered behind the mast provide perfect peripheral view when entering into harbor, while offering as well direct and easy access to halyards and front sails sheets. Even the spinnaker sheets can be controlled from the exterior winch at helm station. The main sail can be either dedicated to one side or managed both sides with the so-called « german system ». We strongly recommend the option for hydraulic main sail car management. Jibes are made easily, without any external support, only by acting on a joystick at helm station. Within 40 seconds the main sail car will translate from one side to the other, and for fast release 4 seconds from middle to side when fully opening the valve. This is an excellent Safety option. Several push buttons may be installed on boat to release the main car.
     Class 6 steering

    Optional « Forward cockpit »

    Thanks to our specific longitudinal section, we can easily open the bulkhead in the front of the living area as this part does not bear any mast load.
    The front cockpit is a perfect place for 5 people to enjoy sailing with a direct view on the landscape, seated or 4 people to relax in the side subbed. This area gets perfect fresh air when sailing in tropical sunny conditions.
    In harbors the front cockpit provides privacy, enabling to relax reading or having a drink. We may add a table upon Customer request. 
    Class 6  Forward cockpit 

    Optional « Flybridge Lounge »

    On top of the bimini, we offer a fantastic space to relax and enjoy view.
    2 SOLUTIONS - SOLARIUM or LOUNGE

    The Solarium is a flat area for people to relax.

    The Lounge is for people to have a table and sofa plus solarium in the back. They can stay seated when sailing or stand up when mooring.
    This flybridge offers passage from both sides of the steering with both seating area and subbed bench. A table may also be added, allowing to enjoy eating with a panoramic sea view.
    A dodger protects from sun and rain when seated with possible extension to the back. Most of the flybridge is made of carbon to reduce weight in the higher part of the structure.

    Class 6 Flybridge lounge

     Aft extensions : Extra speed and comfort

    Laurent BOURGNON added long extension aft on his own motor catamaran. Anyone who went on his boat was convinced after aday - this is a must! On Class 6 we propose as an option a 2m carbon aft extension on the main hulls.
    Aft platform offers so many improvements :
    • Perfect transition between boat and tender. The tender becomes like "a car at home", it is used anytime people need to go away.
    Therefore this aft platform is like having a private dock. There is also plenty of room to transfer food, diving gears … from boat to tender.
    • Perfect place for wet gears and toys such as diving equipment, seabobs, … Perfect place for smelly, dirty such as oil…
    • Extra speed (about 5%) with minimal investment. When motoring, you may use this extra speed to reduce engine rpm for the same speed, thus extending the range in motoring. When sailing this will be pure pleasure !
    • Extra buoyancy (about 350kg). More equipment can be installed on board with less penalty on performances.
    • If needed it can be removed when mooring in harbor for long periods.

    Class 6 aft extension

    Aft Extension: So good when living onboard

     Class 6 aft extension toys

    Class 6   Back

     

     

     

  • Photos

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Sept 6 to 11th
2016

Cannesboatshow