Fast sail

Fiber composite continuous tension members for sailboat...

Flagstaff attached halyard retainer

Flex wing apparatus

Flex wing apparatus

Flex wing apparatus with resilient couplings

Flexible wing rib sail

Flexible wing rib sail

Flexible wing shape controlling device

Flexible wing-sail and wind-propelled vehicle including same

Fluid drag reducing apparatus

Fluid foil system

Forced foil sail

Foresail

Forestay connector

Frame spar for soft airfoils

Furling and unfurling device for asymmetric sails

Furling boom

Furling device for a sailing boat

Furling drum with fixed guard