Coastal Defense Warship Concept Design

I need a complete concept design for a fast, compact coastal-defence warship. The key driver is speed and manoeuvrability, so please centre the layout, weight distribution and propulsion package around that goal... (Budget: $10 - $30 USD, Jobs: 3D Design, 3D Modelling, 3D Rendering, 3D Visualization, CAD/CAM, Marine Engineering)