Principles of yacht design.

Cover
Title
Copyright
Contents
Preface to the Fifth Edition
List of Symbols
Introduction
1. Design Methodology
	• The design spiral
	• Computer-aided design (CAD)
2. Preliminary Considerations
	• Choice of boat-type
	• Intended use
	• Main dimensions
	• Cost
	• Checklist of considerations
	• Checklist for the YD–41
3. Hull Geometry
	• Definitions
	• Line drawing
	• Tools
	• Work plan
	• Computer-aided design of hulls
4. Hydrostatics and Stability
	• Calculation of areas
	• Wetted surface
	• Displacement
	• Centre of buoyancy
	• Water plane area
	• Transverse and longitudinal stability at small angles
	• Transverse stability at large angles of heel
	• Curve of static stability
	• Rolling
	• Influence of waves on the righting moment
	• Stability statistics
	• Assessment of seaworthiness
5. Hull Design
	• Forces and moments on a sailing yacht
	• Resistance components
	• Viscous resistance: basic concepts
	• Frictional resistance
	• Viscous pressure resistance
	• Roughness
	• Wave resistance: basic concepts
	• Wave and residuary resistance
	• Heel resistance
	• Added resistance in waves
	• Other seakeeping aspects
	• Hull statistics
6. Keel and Rudder Design
	• Flow around a wing
	• Definition of the keel planform
	• Classical wing theory
	• Tip shape
	• Lift and induced resistance of the yacht
	• Advanced planform design
	• Canting keels
	• Evaluation of some planform concepts
	• Definition of the section
	• Three useful NACA sections
	• Influence of shape on section characteristics
	• Some practical conclusions regarding section shape
	• Influence of deviations from the theoretical section shape
	• Advanced section design
	• Statistics on keel and rudder area
	• The YD–41
7. Foiling
	• Foiling concepts
	• Forces and moments
	• Flight stability
	• Planform area and shape
	• Foil sections
	• Example – a foiling skiff
	• Computed forces
	• Other aspects
8. Sail and Rig Design
	• Flow around sails
	• Planform
	• Sail camber
	• Mast interference
	• Means for reducing mast disturbances
	• Streamlining
	• A practical model for sail and rig aerodynamics
	• Sail statistics
9. Balance
	• Effect of heel
	• Good balance
	• Centre of effort of the underwater body
	• Centre of effort of the sails
	• Lead
	• Rudder balance
10. Propeller and Engine
	• Resistance in calm and rough weather
	• Propeller characteristics
	• Design of an optimum propeller
	• Performance of the non-optimum propeller
	• Check of blade area
	• Propeller resistance
11. High-Speed Hydrodynamics
	• Planing
	• Deadrise
	• Forces on a planing hull
	• Spray rails, stepped bottoms and transom flaps
	• Dynamic stability
	• Alternative propulsion devices
	• An example
12. Rig Construction
	• Definitions and scope of the standard
	• Forces on the shrouds
	• Forces on the stays
	• Comparison between wire and rod
	• Transverse mast stiffness
	• Longitudinal mast stiffness
	• Fractional mast top
	• Boom
	• Spreaders
	• Holes in the mast
	• The YD–41 rig
13. Hull Construction
	• Concepts in structural mechanics
	• Global loads
	• Local hydrostatic loads
	• Local hydrodynamic loads
	• Transverse load distribution
	• Local deformations
	• Forces from the keel
	• Forces from grounding
	• Forces from the rudder
	• Summary of loadings
14. Materials
	• Glass reinforcement
	• Wet laminates
	• Fatigue
	• Exotic laminates
	• Sandwich
	• Typical sandwich buckling
	• Sandwich bending
	• Sandwich in practice
	• Final remarks
15. Scantlings
	• Determination
	• Structure of the standard
	• Hull definitions
	• Areas
	• Dimensions of panels and stiffeners
	• Pressures on panels and stiffeners
	• Pressure adjusting factors
	• Design loads
	• Design loads for the topsides
	• Design loads for the decks, superstructures and bulkheads
	• Summary of design loads
	• Mechanical properties and design stresses
	• Boatbuilding quality factor K....
	• Assessment method factor K....
	• Aspect ratio factors for plating K2.. and Ks..
	• Curvature correction factor for plating K..
	• Design stresses
	• Design shear forces and design moments F. and M.
	• Methods for scantling determination
	• Determination of mechanical properties
	• Single skin panel calculation
	• Sandwich
	• Stiffener design forces and moments
	• Stiffener curvature factor K..s
	• Stresses in stiffeners .. and d ....
	• Effective width of attached plating B.
	• Stiffener contruction
	• Spade rudder stock
	• Keelbolts
	• Rig loads and rig attachment
16. Layout
	• Generic space requirements
	• Accommodation
	• Deck layout
	• Building the YD–41
17. Design Evaluation
	• Non-dimensional parameters
	• The Velocity Prediction Program (VPP)
	• Towing tank testing
	• Wind tunnel testing
	• Computational fluid dynamics (CFD)
Appendix 1: Main particulars of the YD–41
Appendix 2: Weight calculation
Appendix 3: STIX calculation
References
Index