STIDD Military Submersibles manufactures innovative submersible boats for SOF and Marine Forces. Our boats provide new capabilities to counter today's increasingly unpredictable maritime threat environment. Our Submersible Boats benefit from the same design, engineering and quality manufacturing techniques that have made STIDD marine seats world famous. The STIDD Diver Propulsion Device (DPD) is the most widely used two man underwater mobility platform in the world, and the Multi-Role Combat Craft (MRCC) is the only craft of its kind that operates on the surface and while submerged.