Sailboat Window Covers

I made these window covers for my brother's sailboat. The perimeter of the windows has a little slot in the extrusion, which holds the covers in place. The slot is about 8mm deep and 6mm wide. The fabric has interfacing sewn into it to give the covers enough stiffness to hold themselves in place. Each window was traced onto clear plastic to obtain the pattern. There are two more small windows I made covers for, not pictured.

These replace a curtain which hung from the taut cord with the clothespins on it. By making the covers instead sit flush to the window, the inside of the boat feels a bit bigger!