Advanced Poly Marine Systems Corp. Low-Cost, Scalable, American-Made Unmanned Hulls.Our Legion Series hulls are rugged, double-skinned, foam-filled, rotomolded polyethylene vessels. They deliver maximum durability at the lowest possible cost, offering superior impact resistance, buoyancy, and low maintenance compared to fiberglass or aluminum boats. “Rugged hulls, mission-ready — nothing more, nothing less.” Request a Demo Hull…