I don't know a thing about KVH, but aligning a DVB dish is pretty basic - but can be tricky, having done this a number of times for Dish Network and once for DirecTV.
Here's the way I'd approach the problem: On the receiver put in your current
zipcode, and get the azimuth, elevation, and skew values. Is the dish pointed in that general direction? If not, then it's probably a calibration issue of some sort. Maybe the KVH needs to calibrate/reference itself to the boat?
Again, this is total speculation on my part, since I've only aligned normal old statically mounted dishes (including just a couple of days ago), but if it's not pointed in the right direction, then it's an alignment issue of some sort!