US Patent 9669902 Hydrofoil

A hydrofoil, suitable for kite surfing and jet skiing, comprises a keel fin having a first end portion for fastening to a board; and a front wing and a rear wing which are arranged one behind the other in the travel direction and are connected to a second end portion of the keel fin; wherein a connecting rod is situated on the second end portion of the keel fin and detachably connects the wings to the keel fin; and wherein a plate is situated on an outer side of the keel fin and on an outer side of at least one of the wings, and via detachable fastening means is braced to the connecting rod so as to detachably fasten at least one of the wings to the keel fin.