The Oškinis BRO-11 was a simple, single-seat primary glider in the open girder style exemplified by the pre-war SG 38 Schulgleiter.
[1][2] Its high wing, mounted on top of the fuselage girder, was rectangular in plan and built around a single, wooden spar with plywood skin ahead of it, forming a torsion-resistant D-box, and fabric covering behind.
The wing was braced to the bottom fuselage beam with a single strut on each side, assisted by drag wires from the nose.
The same beam was attached to the wing with an N-form cross-member and also carried the forward end of the horizontal upper fuselage member.
[2][3][4] Both variants had triangular tailplanes mounted on the upper frame with elevators which were rectangular in plan apart from a cut-out for rudder movement.