Thistlebase
Stern Flotation Passes Test
The Kansas City Thistle Fleet designed and tested stern flotation blocks made from styrofoam logs to comply with TCA by-laws. Costing less than $20 each, these blocks were proven effective in high winds, with boats equipped with them successfully self-righting in 25-35 knot gusts without needing to lower sails.
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This is a summary. The full article text is © the Thistle Class Association — read the original scan via the link above.