The following are links to offsite sailboat technology articles. Please suggest links or report broken ones here.

Aerodynamics and Hydrodynamics

• On the Optimization of Airfoils with Flaps: by Prof. Dr. Ing. F.X. Wortmann.
• Irrotational Flow of an Inviscid Fluid: by Marco Colombini.
• Minimum Induced Drag of Sail Rigs and Hydrofoils, Part 1: Planar Planforms: by Tom Speer.
• The Influence Of Planform And Airfoil On The Design Of High Performance Sailplane Wings With Very High Aspect Ratio (Low Re-Numbers): by Klaus Holighaus.
• The Totally Free Airfoil Primer: by John Dreese.
• Computational Methods for Investigating Sail Forces - A Case Study: by Patrick Couser.
• Advanced Topics In Aerodynamics: by Antonio Filippone.
• Hydrofoil Design Basics - A Brief Tutorial: by John Meyer.
• Investigation into Wave Loads on Catamarans: by Stephen Cook.
• Sail Shape & Aerodynamics: by WB-Sails Ltd.
• The Quest for the Perfect Shape: by WB-Sails Ltd.
• On the Effect of the Side Bend of the Mast: by WB-Sails Ltd.
• 470 Sail Aerodynamics: by WB-Sails Ltd.
• Telling Tales: by WB-Sails Ltd.
• The Scientific Finn: by WB-Sails Ltd.
• Innovations in IACC Keel Design: by Philip Carter.
• Hull-Appendage Interaction of a Sailing Yacht, Investigated with Wave-Cut Techniques: by Jonathan R. Binns et al.
• Sailing Theory: by Pim Geurts.
• 505 Fins - A Definite Work: by Bransford Eck.
• Everything You Ever Wanted to Know About 505 Fins...: by Bransford Eck.
• Theoretical Investigation of Drag Reduction in Maintaining the Laminar Boundary Layer by Suction: by A. Ulrich.
• Transition Caused by the Laminar Flow Separation: by T. Maekawa.
• The Stability of the Laminar Boundary Layer in a Compressible Fluid: by Lester Lees.
• Boundary Layer Theory - Part I: Laminar Flows: by H. Schlichting.
• Boundary Layer Theory - Part II: Turbulent Flows: by H. Schlichting.
• A Method of Rapidly Estimating the Position of the Laminar Separation Point: by Albert E. Von Doenhoff.
• Direct Measurements of Skin Friction: by Satish Dhawan.
• On the Theory of Laminar Boundary Layers Involving Separation: by T.H. Von Karman.
• A Low-Speed Experimental Investigation of the Effect of a Sandpaper Type of Roughness on Boundary-Layer Transition: by Albert E. Von Doenhoff.
• Investigation of the Boundary Layer About a Symmetrical Airfoil in a Wind Tunnel of Low Turbulence: by Albert E. Von Doenhoff.
• Summary of Airfoil Data: by Ira Abbott et al.
• The Minimum Induced Drag of Aerofoils: by Max M. Munk.
• Aerodynamics for Students: by A.J. Auld.
• Performance Analysis of a Wing With Multiple Winglets: by M.J. Smith et al.
• An Explanation of Sail Flow Analysis: by Stanford Yacht Research.
• Comparison of Wind Tunnel and Full-Scale Aerodynamic Sail Force Measurements: by Heikki Hansen et al.
• Hydrodynamic Modeling of Sailing Yachts: by Stefan Harries et al.
• Design and Construction of a Sail Force Dynamometer for the Measurement of Aero and Hydrodynamic Forces: by H. Brandt et al. (in German).
• On the Principles of Hydrodynamic Optimization of Sailing Yachts: by Karsten Hochkirch et al. (in German).
• Fullscale Hydrodynamic Force Measurement the Berlin Sail Force Dynamometer: by Karsten Hochkirch et al.
• Measurement of Hydrodynamic Forces: by H. Brandt et al. (in German).
• A smooth bottom is a fast bottom. Is the bottom of your boat smooth enough? by Paul Grimes.
• Tip Vortex: by Dave Acree.
• Center of Effort: by Dave Acree.
• Wind: by Dave Acree.
• More Wind Information: by Dave Acree.
• Turbulent Wind: by Dave Acree.
• Ill Wind: by Dave Acree.
• Wind Velocity: by Dave Acree.
• Rudder Design: by Dave Acree.
• Keel Bulb Shape: by Dave Acree.
• Bulb Shapes: by Dave Acree.
• Keel Optimization Using CFD Methods: by Kai Graf et al.
• CFD Investigations and Design Integration For IACC Yachts: by Kai Graf et al.
• Inviscid and Viscous Flow Calculations Around Yachting Sails: by Kai Graf.
• Circulation, Planform, Bubbles: by Lester Gilbert.
• Foil Planforms: by Lester Gilbert.
• Momentum Theory of Lift: by Lester Gilbert.
• Circulation Theory of Lift: by Lester Gilbert.
• Lifting Line Theory of Lift: by Lester Gilbert.
• Fin Area: by Larry Robinson.
• Sail Section Lift: by Lester Gilbert.
• Sail Draft: by Lester Gilbert.
• 2D Entry & Exit Angles: by Lester Gilbert.
• Apparent Wind: by Lester Gilbert.
• Wind Gradient: by Lester Gilbert.
• Sail Twist: by Lester Gilbert.
• Development of a Web Based, Collaborative Working Environment for Maritime Computational Fluid Dynamics: by S.R. Turnock et al.
• Flying Sails on the Computer: by H. J. Richter et al.
• An Experimental Investigation of High Aspect-Ratio Rectangular Sails: by A. Crook et al.
• International America’s Cup Class Yacht Design Using Viscous Flow CFD: by Paul Jones et al.
• Optimum Sail Design for Small Heel and Weak Wind Shear Conditions: by Takeshi Sugimoto.
• The Influence of a Yacht’s Heeling Stability on Optimum Sail Design: by A.D. Sneyd et al.
• Coupling Hydrodynamic and Aerodynamic Computations to Predict Sailing Boat Behavior: by J.P. Boin et al.
• Roll Motion of Yachts at Anchor: Kim Klaka et al.
• International Moth - Foil Angle of Sweep: by Doug Culnane.
• Aerodynamics of Teardrop Wingmasts: by Tom Speer.
• The Influence of Passive, Leading Edge Tubercles on Wing Peformance: by Phil Watts et al.
• Best Practice Guidelines for Marine Applications of Computational Fluid Dynamics: by WS Atkins and members of the NSC.
• Uncertainty Analysis in CFD, Uncertainty Assessment Methodology: by ITTC.
• Uncertainty Analysis in CFD, Guidelines for RANS Codes: by ITTC.
• Uncertainty Analysis in CFD, Examples for Resistance and Flow: by ITTC.
• MARNET CFD Final Report and Review of the State-of-the-art in the Application of CFD in the Maritime and Offshore Industries: by WS Atkins and members of the NSC.
• Fluid Dynamic Analysis of America's Cup Boats Including Dynamic Sinkage and Trim Effects: Julio Garcia-Espinosa et al.
• Numerical Determination of Wave Resistance with RANS and Potential Theory: by O. El Moctar et al.
• Computations of Flows With Free Surfaces: by R. Azcueta et. al.
• A New Approach to Steady Free Surface Flow Calculations: by H. Raven et al.
• Parabolic Taper Battens: by Wally Hall.
• Hydrodynamic Study of a Canting Keel Based Appendage Configuration: C.A. Lopez Pavon et al.
• The Aerodynamics of Sail Interaction: by Arvel Gentry.
• A Review of Modern Sail Theory: by Arvel Gentry.
• The Application of Computational Fluid Dynamics to Sails: by Arvel Gentry.
• Sailboat Performance Testing Techniques: by Arvel Gentry.
• How Sails Really Work: by Arvel Gentry.
• Boundary Layer Flow and the Headsail: by Arvel Gentry.
• How a Sail Gives Lift: by Arvel Gentry.
• Another Look at Slot Effect: by Arvel Gentry.
• More on the Slot Effect: by Arvel Gentry.
• Why the Safe Leeward Works: by Arvel Gentry.
• The Double Head Rig: by Arvel Gentry.
• Checking Trim on the Wind: by Arvel Gentry.
• Achieving Proper Balance: by Arvel Gentry.
• Sailing to Windward: by Arvel Gentry.
• Are You at Optimum Trim? by Arvel Gentry.
• What Goes Around Comes Around (on the concept of circulation): by Arvel Gentry.
• Fluid Dynamics. How Modern Science and Sailing Discovered Each Other: by Arvel Gentry.
• Design of the Courageous Mast: by Arvel Gentry.
• Rigging and Handling the Spinnaker: by Arvel Gentry.
• Sailing Yacht Rig Improvements through Viscous Computational Fluid Dynamics: by Vincent Chapin.
• Sail flow modeling in Fluent: Which Turbulence Models to Use?: by Steven Collie et al.
• A Review of Turbulence Modelling for use in Sail Flow Analysis: by Steven Collie et al.
• An Experimental Investigation of High Aspect Ratio 2D Sails: by Andrew Crook et al.
• Numerical Simulation of the Turbulent Flow past Upwind Yacht Sails: by Steven Collie et al.
• Design of Two-Dimensional Downwind Sail Sections Using Computational Fluid Dynamics: by Steven Collie et al.
• Towards an Efficient Optimization Algorithm for Yacht Sails: by Tyler Doyle et al.
• Numerical Analysis and Design of Upwind Sails: by Sriram Shankaran et al.
• Experimental Study on the Influence of Appendages on a Yacht Rolling at Zero Froude Number: by Kim Klaka et al.

Construction and Materials

• CNC Milling for Plugs, Molds, and Tooling: by Stephen M. Hollister.
• Composite Materials for the Recreational Marine Industry: by Eric Greene Associates, Inc. .
• Composite Materials: by Eric Greene Associates, Inc.
• Composite Materials: by Eric Greene Associates, Inc.
• Composite Materials - Loads: by Eric Greene Associates, Inc.
• Composite Materials - Micromechanics: by Eric Greene Associates, Inc.
• Composite Materials - Macromechanics: by Eric Greene Associates, Inc.
• Composite Materials - Design Charts: by Eric Greene Associates, Inc.
• Composite Materials - Panel Buckling: by Eric Greene Associates, Inc.
• Composite Materials - Fatigue: by Eric Greene Associates, Inc.
• Composite Materials - Impact: by Eric Greene Associates, Inc.
• Composite Materials - Delamination: by Eric Greene Associates, Inc.
• Composite Materials - Water Absorption: by Eric Greene Associates, Inc.
• Composite Materials - Blisters: by Eric Greene Associates, Inc.
• Composite Materials - Case Histories: by Eric Greene Associates, Inc.
• Composite Materials - Failure Modes: by Eric Greene Associates, Inc.
• Composite Materials - Performance in Fires: by Eric Greene Associates, Inc.
• Composite Materials - Manufacturing Processes: by Eric Greene Associates, Inc.
• Composite Materials - Repair: by Eric Greene Associates, Inc.
• Composite Materials - Quality Assurance: by Eric Greene Associates, Inc.
• Composite Materials - Rules and Regulations: by Eric Greene Associates, Inc.
• Composite Materials - Conversion Factors: by Eric Greene Associates, Inc.
• Composite Materials - Glossary: by Eric Greene Associates, Inc.
• Composite Materials - References: by Eric Greene Associates, Inc.
• Composite Materials - Marine Laminates Test Data: by Eric Greene Associates, Inc.
• Stiffness Reduction of Marine Composites: by Paul H. Miller.
• Visit to North Sails 3DL Fabrication Plant: by Stanford Yacht Research.
• Hull Material Evaluation for Navy 44 Sail Training Craft: by M. H. Arvidson.
• Composites and Plastics: by Barry Berenberg.
• Into the Wind: by Siemens.

Design

• Automatic Hull Variation and Optimization: by Stephen M. Hollister.
• The Dirty Little Secrets of Hull Design by Computer: by Stephen M. Hollister.
• The Design Spiral for Computer-Aided Boat Design: by Stephen M. Hollister.
• Reverse Engineering 3D Computer Hull Shapes From 2D Lines Drawings and Offsets Tables: by Stephen M. Hollister.
• 2nd Thoughts on ACC Designs...!: by John Browning
• Advanced Parametric Yacht Design: by Karsten Hochkirch et al.
• Efficient Geometric Modeling in Modern Yacht Design: by Claus Abt et al. (in German).
• Parametric Design and Optimization of Sailing Yachts: by Stefan Harries et al.
• IACC Bow Design Evolution: by CupInfo.
• Boat Tests: by Paul Todd (photos).
• Design Optimization for the International America’s Cup Class: by Frank DeBord et al.
• The BASILISCUS Project - Return of the Cruising Hydrofoil Sailboat: by Tom Speer.
• An Investigation into Some Aspects Involved in the Design of an International Moth Racing Dinghy: by Doug Culnane.
• Sailboat Design by Response Surface Optimization: by Claudio Fassardi et al.
• Hull Form Evolution For a High Performance Superyacht: by Mateo Polli (6.5 Mb)

Handicap Systems and Rules

• Handicap Systems: by US Sailing.
• Yacht Racing Handicap Systems: by Jim Teeters.
• About AMERICAP: by Southern California Ocean Racing Association.
• IRC - IR2000 parts 1, 2, 3 & 5: by the Royal Ocean Racing Club.
• IR2000 full rule parts 1-5 (IRC + IRM): by the Royal Ocean Racing Club.
• Sailboat Racing Corrected Time Formulas Primer: by Barry Dallum.
• PHRF, IMS, and Americap: A Comparison of the Handicapping Systems: by Paul and Kathy Mathews.
• The Volvo Open 70 Rule: by the Volvo Event Management UK Ltd.
• America's Cup Class Rule - Version 5: by the Challenger Of Record and Defender for America's Cup XXXII.
• International 14 Rule Changes: by Doug Culnane.

Performance

• Windward Performance of the AME CRC Systematic Yacht Series: by Bruce McRae et al.
• Downwind Performance of Yachts in Waves: by Douglasl Harris.
• CFD Design Studies for America's Cup 2000: by Bruce Rosen et. al.
• Yacht Performance Prediction: Towards a Numerical VPP: by Yann Roux et al.
• Yacht Match Race Simulation: by David Teirney.
• Sailing Yacht Performance: The Effects of Heel Angle and Leeway Angle on Resistance and Sideforce: by Sebnem Helvacioglu et al.
• The Windward Performance of Yachts in Rough Water: by Jonathan R. Binns et al.
• RANSE Simulations for Sailing Yachts Including Dynamic Sinkage & Trim And Unsteasdy Motions in Waves: by Rodrigo Azcueta.
• Performance Prediction of Sailing Yachts Using Full Scale Force Measurements: by Karsten Hochkirch et al. (in German).
• Performance Predictions for the Sail Force Dynamometer: by H. Brandt et al. (in German).
• Real-Time Velocity Prediction Program for Wind Tunnel Testing of Sailing Yachts: by Heikki Hansen et al.
• How to Design a Volvo Open 70 - Part 1: Thoughts on Hull and Appendage Design: by Reichel/Pugh Yacht Design.
• Comparison of US Sailing Spinnaker Tests with IMS Aerodynamics: by Jim Teeters.
• VPP Performance Predictions for Current and Two Proposed Navy-44 Designs: by A. P. DeMeyer.
• Numerical Simulation of a Navigating Sailing Boat: by J.P. Boin et al.
• Towards Predicting the Behaviour of Yachts in Following Seas: by Douglas Harris.
• Design Optimization Tools: by Claudio Fassardi.

Routing

• Optimal Weather Routing Using Ensemble Weather Forecasts: by Asher Treby.

Sailing Basics

• The Physics of Sailing: by Joe Wolfe.

Stability

• International Moth Transverse Stability: by Doug Culnane.
• Understanding Ship and Boat Stability (Stability & Trim - Part1): by Brian Trenhaile.
• Understanding Ship and Boat Trim (Stability & Trim - Part 2): by Brian Trenhaile.

Tank Testing

• Tank Testing and Data Analysis Techniques for the Assessment of Sailboat Hydrodynamic Characteristics: by Claudio Fassardi.
• Tank Testing Basics: by Claudio Fassardi.