It's certainly a pretty individual design, have you ordered a resin print of it yet from Shapeways? Will the central section support the outer hulls in real life?
If I have one criticism it's the panel detailing. It looks like you're just beveling and shifting the existing polygons to create 99% of the surface detail. It's a valid technique, very handy when you're first starting out modeling, but it's also kinda obvious and a little limiting. I'd love to see you not leaning so heavily on the technique for your next model, and cut in more custom detail using other techniques to create something really great.