Yacht Design Paul De Saint Front

Paul De Saint Front

Consulting & Expert Services

      Paul de Saint Front has created a network of agents and designers from all over the world and particularly in Asia, who are available to bring their collective skill and experience to bear for clients needs. This network includes Naval Architects, Boat Builders, and engineers who are willing to share their invaluable trade 

Boat Design Service

     Paul de Saint Front is a freelance naval architect who lives in Killcare in Australia. During his 30 years of experiences he had the opportunity to build lasting and productive relationships with other talented Naval Architects, boatbuilders, engineers and professionals. People with whom he often collaborate for project that required team work with specific domains of competences.      

Supervision on New Vessels

     Boatbuilding requires special attention in order to produce the desired results. The supervision of such a project requires sound knowledge and understanding of what the client and designer wish to achieve, as well as the actual and practical capacity of the boat yard performing the construction. Important details which must not be overlooked are safety regulations, and administrative tasks relative to the construction process. Paul will provide all of the necessary assistance and oversight required to see a project through to completion and satisfy all of the technical and administrative demands. 

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Custom Design

    A boat is a combination of many requests and specifications that should bond together with harmony, and efficiency.

 Yacht design is a long and demanding creative process that begins with a study of the owner’s requirements and specifications. Owners are welcome to provide sketches or pictures as examples of the boat that they wish to build, or explore the option of modifying and adapting an existing design from the architects design collection

There are many options in the market for an owner looking to build a boat. Many architects offer stock design plans at affordable rates which allow the owner to build the vessel themselves or with a boat yard. The boat that you build will ultimately be a product of the choices and decisions that you make. Factors such as materials, construction methods, and the boat yard that you choose will all contribute to the end result.

A well designed boat should satisfy the owner’s requirements while matching the boatyards techniques and capacity. Often an attractive stock design plan does not truly fit or satisfy those requirements, besides to modify a design plan special attention and understanding are needed to keep the delicate balance of form and function without upsetting the performance and handling of the boat.


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Design Considerations

   Designing a yacht is a team effort, requiring cooperation between the owner, the architect, and the builder of the vessel. The Society of Naval Architects has published a Charter of Naval Architecture that defines the role of each party, along with a code of good conduct for all parties involved in the design process. I invite you to read the Charter of Naval Architecture published by IFAN (Institue Francaise des Architect Navales). This charter will also define what a Naval Architect is, his responsibilities, and give answers to many frequently asked questions. 

Classifications Society compliant designs

   All designs comply with the rules and guidelines of the Classification Society. We assist with the supervision of the Classification Society, and provide all documentation required to obtain approval and certification. The choice of which Classification Society to use for certification depends on the type and size of the boat. For most sailing and power craft under 24 Meters we recommend the ISO and ABS rules. For sailing and power craft larger than 24 Meters we recommend either the Bureau Veritas, or Lloyd Rules

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Areas of Competency

1.1 -Ensure the proper function and operation of the vessel for the purpose and application which it was designed, specifically:

- Transversal Stability
- Maneuverability
- Performance*
* The Naval Architect alone can not guaranty performance as this depends on several factors and partners which are out of his control, such as:
- The true and actual weight of the ship
- Engine Performance
- The properties of the propeller
-  The performance of the sails and rigging
- The capabilities of the end user 

1.2 –The Global Definition of the Vessel
This is what defines the foundation and purpose of the boat design, which in turn allows the contributing parties to carry out their work, and take responsibility for their roles in the project. This applies to constructed components, and supplied equipment in particular. 

1.2.1 The shape of the hull

         Quick works, dead works, and appendages, along with hull shapes must be supplied.
          - Total displacement corresponding with the lines design of the plan and in accordance with acceptable sinking and loaded trim values.

          - Projected and reckoned weight estimate of the main posts and the acceptable sinking values. This projected weight estimate must be accepted by the builder and the owner: each for their own responsibilities (construction, and ownership)
          - Position corresponding with the center of gravity (longitudinal and vertical) in the same conditions 

1.2.2 Shape of the Deck and Superstructures

1.2.3 Structural Layout of the Vessel
         - The Naval Architect will determine the general definition of the structures and 
characteristics of the material which compose these structures.
         - The Naval Architect will define the global stresses and the resistance of the main structural elements.

1.2.4 The propulsion system of the vessel: engine, rigging, sails. Engine
            - The boat builder and the engine supplier are responsible for the elements which comprise the propulsion system. They must communicate the stresses
              (thrust, frame, etc.) which will be transmitted to the engine frame, the propeller shaft, etc. to the Naval Architect.
            - The Naval Architect accepts no responsibility for the support of the propulsion equipment and the transmission of stresses to the general structure. Sails and Rigging
            - The Naval Architect will define the sail plan and general layout of the rigging (stays, shrouds, etc. as well as the number and layout of the spreaders).
            - The Naval Architect will define the position mounting points where the forks are attached to the vessel and indicate the global compression of the traction
              stresses which the mast will bear, the shrouds, and the chain plates, as they contribute to the overall stability of the vessel.
            - The manufacturer of the mast and rigging must for their part and in accordance with the specifications mentioned above determine the following:
            - The resistance of the mast elements
            - The section and inertia of the profile
            - The necessary layout
            - The appropriate materials and their dimensions which respond to the entreaties 

1.2.5 Outline plan for implementation of equipment and verification of the weighted elements supplied by the contractor to ensure that the main posts of the preliminary weight estimates are globally respected. 

1.2.6 Interior Installations

         - These plans give a general outline with or without details according to the contract.
         - The plans and the study of the electric and fluid circuits are generally done by a specializing research department in collaboration with the shipyard and the equipment manufacturers. The Naval Architect simply agrees with their recommendation to ensure that the layout and the passage of cables and piping correspond with the general layout of the vessel and the predicted weight estimate. 

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