I agree to what Techmati wrote...Assuming you are talking about the 80' class and less (because the low radar arch concept is evident mostly in that class) I have to explain you that Euro users drive these boats mostly themselves...ergo, while they are on sundeck radar is off. Even while driving from the sun deck it is pressumable that they don't need radar for that, as they stay out there when the weather is nice (and they boat when the weather is nice). There is no request, so the form doesn't gives way to the function...Quite simple, no?