It is a Bluewater. Looks like 51 footer. We have a 1986, but the model with a cockpit. The pair of us love it for cruising the Bahamas because of its shallow 2' draft, large mainly one-level one level (easy safe staircases both sides to fabulous-to-spend-time-on bridgedeck). She is a super-comfy geriatric liveaboard &/or for family & guests and/or entertaining. Downside are our huge fuel & electricity guzzlers., ndter our simple cruising sailboat we find all of the wiring, electrical,, and electronic complexity too much to repair and unneccessary. We need to put in a new depthsounder without hauling...and WOULD LIKE TO KNOW the thickness of the hull and material(s)/layers?????