Hydrofoil device and piece of water sports equipment

A hydrofoil device comprising:

• at least one foil;
• a support column;
• an electric drive;
• at least one battery;
• and
• an elongate signal cable duct;
• wherein a head end of the support column is configured so as to be securable to an underside of a hull of a piece of water sports equipment,
• wherein the at least one foil is secured to the support column,
• wherein the electric drive is secured to the support column and/or the at least one foil,
• wherein the at least one battery is electrically connected to the electric drive for supplying the electric drive with electrical energy,
• wherein a rear end of the signal cable duct is arranged at the support column and a front end of the signal cable duct comprises a receiving device,
• wherein the receiving device is configured to receive control signals,
• wherein the signal cable duct encloses at least one signal cable,
• wherein the at least one signal cable is configured to transmit the control signals from the receiving device to the electric drive, and
• wherein the signal cable duct is configured to grip around a front edge of the hull of the piece of water sports equipment.