There is disclosed a foil system for hydrofoil vessels, where the foil
system lifts and carries the total weight of the craft at speed, and
comprising a number of adjustable control fins/-surfaces (3-5), supporting
legs (7-9) between the foil system and the hull of the vessel, and means
to adjust the control fins/-surfaces. The foil system is characterized in
that it is formed by one single approximately horizontal foil body
comprising two generally mirror symmetric foil arms (1, 2) which extend
aft to each side in almost equal angle, in that the forward corner of the
angle lies in the center line (11) of the craft, and the foil arms extend
aft to each side in an almost equal angle (12) with the longitudinal
centerline (11) of the craft.
