SOLID. As far as feedback goes, it's a bit too grey.
Either more fog or more lighting, comes in mind. The length of this cruiser is determined by the plain-air effect so if you want it seem not too long, make it shine and the water's waves reflect in sinus light flashes at the forefront. If you want to make it seem like it's very long, add more fog between the viewer and the direction it is going. Seaspray + diminishing value.
Personally, I'd add highlights to that metal at every edge AND the light effects at the forefront on the side, and then a touch of seaspray and fog in-the-face of the viewer to make it feel like the monstrosity just went by at top speed.