ground-effect sea glider 3d model

Create a clean CAD-style 3D model of a ground-effect sea glider aircraft (ekranoplan). The aircraft should have a flying boat hull fuselage designed for water takeoff and landing. A high-mounted straight wing with four turboprop engines evenly spaced along the wing. Large wingtip floats for stability on water. Twin vertical supports connecting the wing to a high-mounted horizontal stabilizer forming a T-tail. Smooth aerodynamic surfaces with simple geometry suitable for CAD conversion. Engineering prototype design with no textures, no colors, and clean topology. Hard surface mechanical design with accurate proportions and symmetrical geometry. The model should be suitable for conversion to STEP or IGES for use in CAD software.