For the Boat or Yacht manufacturer  with a V-Hull configuration , ” EEFS “ at Front  consist of a retractable  single foldable, hidden Hydrofoil system to be installed to a front Bulkhead and Stringers. The Rear end consist of  a twin foil system installed to a rear Bulkhead or inner Transom with retract position for conventional Trim-tab cruise. Submerged ” EEFS ” is the system for efficient action .

For observable trim angle and an efficient power usage, system choose optimum angle of attack by remote control relative to cruise speed.