http://www.sailtheory.com/tuning.html
"The principle of tuning is rather simple, but since there are so much
variables it will always stay an art, rather then science.
Science, like the theory presented here, might help you develop the
art more, see it as an school for arts."

Nice page good diagrams.


http://www.sailtheory.com/mandf.html

"Now we are going to apply this to a sailboat.
If one wants to demonstrate how steering with the sail works the
following might help:"

http://www.wb-sails.fi/news/95_11_Te...lingtales.html
"Telltales, tufts, indicators, flappers, woollies - a dear child has
many names. No matter what you call them, they are an essential aid in
steering and trimming."


http://www.sailtheory.com/sail.html
"How a sail (and wing) works"

http://www.sailtheory.com/resistance.html
The resistance a ship can be divided into 5 main reasons.
Frictional losses
Pressure resistance
Wavemaking resistance
Resistance due to drift

http://www.sailtheory.com/stability.html
"With "starting stability" the tendency of the ship to level at small
angles is meant.
with "extent of stability" the max angle to what the ship is self
righting is meant.
In general there are 3 kinds of stability:
Form stability
Weight stability
Speed stability"

http://www.sailboat-technology.com/l...e_articles.php
A large list of many tech. artices in PDF
-Aerodynamics and Hydrodynamics
-Construction and Materials
-Design
-Handicap Systems and Rules
-Performance
-Rigging
-Routing
-Sailing Basics
-Stability
-Structures
http://www.marinecomposites.com/PDF_...P_Blisters.pdf
http://www.arvelgentry.com/techs/Sai...Techniques.pdf

http://www.marinecomposites.com/PDF_Files/U_Repair.pdf

Excellent article on GRP repair with diagrams and images.

http://www.boatbuilding-links.de/index.html#howtos
"This page points to some of the sites I consider useful for
hobby-boatbuilding readers who are searching for cheap and fast
boatbuilding techniques like stitch and glue, tape and tack, taping
polytarp sails and to home- / garage built boat projects. If you find
interesting sites or themes which fit to my site or an object on this
site give me a tip."

http://www.muskokaseaflea.ca/

http://home.att.net/~v.lessley/new_page_5.htm
Good Rudder info. and diagrams
http://home.att.net/~v.lessley/boat_bio.htm

Mic'67