The Pro 48 is like what you describe and that's what they use for the Blue Hole day trip and the other Atoll day trips. They don't use that boat for local dives.

By the way, you should use the search function (if you haven't already done so) and enter the names of the hotels that you are interested in. You will get any number of posts/threads come up to help give you more information.

A fish and a bird can fall in love, but where will they build their nest?