Thistlebase
HOW TO MAKE YOUR CENTERBOARD AN AIRFOIL
Technical guide to shaping a centerboard to function as an efficient airfoil. Provides step-by-step instructions for centerboard modification using readily available materials and tools.
View original on Google Drive · page 6
The scanned issue opens in Google Drive; turn to page 6.
This is a summary. The full article text is © the Thistle Class Association — read the original scan via the link above.