Pete 7 is, of course correct. However, the Azimuth is supposed to be designed to military specification (at least that's what the marketing blurb said when I bought mine).
It has quite a few levels of electronic damping, which it certainly needed, as my last boat was not anywhere near as comfortable as a RIB at the same speed, having a medium Vee.
I particularly liked the large display and the ability to off-set it for ease of reading. The sensor is built in, although it is also possible to get a remote sensor version. It has the usual NMEA 0183 output to interface with other kit.
The full name is "KVH Azimuth 1000". I think a good place to look is probably www.kvh.com
but if I try it now, I shall have to re-input my post, so I'll leave it to you!
The only problem that might present itself on a RIB is somewhere to put it, as the base diameter is 15.9cm and it's 7cm high (dome-shaped).
"Swinging" it is fun - you have to drive round in a circle once or twice and that's it! If it "thinks" that it can improve accuracy next time you are going round in circles, it will do so automatically!
I would be interested to hear what you think, if you decide to buy one. I shall certainly get one for Aries III when it is built - not for while yet, unfortunately.