We were liveaboards on a Bayliner 4087 (see my avatar pic) before moving up to our current 52. Power was a pair of Cummins 6BTAs (250 each), and it would putt along at 8 knots or jump on plane and be happy at 14-16, with a top speed of 24 if needed.
We had her all over Puget Sound and found her to be comfortable and easy to handle. Here's a blog of some liveaboards that went all over the place onboard their 4087:
MV Dirona Blog - Bayliner 4087