Sailboard keel fin performance enhancer comprises tube attached to fin end

摘要

The performance enhancer for a sailboard keel fin consists of a tube (1) fastened to the end of the fin (3). The tube can have a round, square or other cross-section, and dimensions varying between 5 mm and 15 cm in diameter and 1 to 40 cm long. It can be fitted with additional foils measuring 1 - 10 cm wide, 1- 30 cm long and 0.1 - 1.5 cm thick.