The aerodynamics of a floatplane can be improved by providing a wing
suitable for mounting on a spreader bar between floats of the floatplane,
mounting said wing on the spreader bar between the floats of a
floatplane, and preventing the wing from rotating around the spreader bar
during flight operations. In one apparatus embodiment, the invention
comprises a wing mountable on a spreader bar between floats of the
floatplane, a plurality of ribs spaced along the wing's axis, each rib
having a recess suitable for accepting the spreader bar, and
torque-restraining means to prevent the wing from rotating around the
spreader bar.