A California Proposal: A Spade Type Rudder for the Thistle

Technical article proposing a new spade-type rudder design for Thistles to improve control in various sailing conditions. The author describes the design evolution, testing results, and advantages over current rudder designs.

This is a summary. The full article text is © the Thistle Class Association — read the original scan via the link above.

• rudder design
• spade rudder
• technical proposal
• boat improvements