 The stub-wings, which are hinged to the bottom of the hull, each carry a sponson to provide additional stability upon the water, as well as housing large fuel tanks and featuring an airfoil section to assist during takeoff runs.A large number of stiffeners are present throughout the stub-wings to achieve a relatively stress-resistant construction, conveying and distributing stresses across the frames and hull spars.The wing of the Laté 520 comprised a center section and two fabric-covered outer sections, these being braced to the stub wings.