Thistlebase
Note from The Chief Measurer
Technical note about aluminum boom slots for Thistles, clarifying that aluminum boom slots should not exceed 11'11", and recommending screw placement to prevent sail extension beyond legal limits.
View original on Google Drive · page 3
The scanned issue opens in Google Drive; turn to page 3.
This is a summary. The full article text is © the Thistle Class Association — read the original scan via the link above.