a) around that size (plus / minus a couple of feet)
spring to mind. and Bavaria
Will all be pretty much of a muchness - kinda like swapping from a mid size(European) Ford to a Toyota. Things might be in different places, but essentially the same.
If you can find his Bavaria year (and any model name) could do some Googles on what he has and then on some Charter Companies (Sunsail / Moorings) and see what models they have listed in that size.