Yacht Design Paul De Saint Front

Paul De Saint Front

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.

1.2.4.1 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.

1.2.4.2 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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