Design terms...what do these mean?

Need everyone's input on the words "rocker", "hook", and "rebeal" as they apply to boat bottom design and their effects on a boat's performance.

 

Has anyone even heard of the term "rebeal"?

 

What does "rebeal" mean?

 

Rocker is the convex curve of the keel in profile
Hook is a reverse curve at the stern
I never heard of rebeal

 

I could find no definition in Webster's for the word, "rebeal".

I am, however, familiar with the architectural/industrial design term; reveal,
which is: an internal side surface of an opening or recess, especially of a doorway or window opening.

A reveal is usually used to accentuate (or hide) an opening, or to make a change from one surface to another more obvious. The idea being that by making it MORE obvious the adjacent surface (a parting line, or opening) becomes LESS obvious.

An example: The molding around a door opening creates a reveal, in that it hides the imprecise fit between the uneven surface of the wall and that of the door. If you think of the plane of the wall, and the plane of the FACE of the molding, the edge of the molding (the plane that represents it's THICKNESS) would be the reveal.

Another example: The perimeter of a lazarette cover would be difficult to precisely match to the opening in the lazarette. But if you were to design (say) a half-inch wide recess around the lazarette opening (with an incorporated drainage groove, maybe...) you have created a reveal that "hides" the imprecise fit between the the cover and the opening but still looks nice. You see this kind of detail on a lot of injection molded plastic products (look at the joint between the pieces on your TV remote).

Reveal on the BOTTOM of a boat....... i dunno...

 

There's also the rabbit or rebate line where the fairbody bottom meets an external box keel, and I think I've heard "rebate" or something like that used to describe a dent or hollow in the bottom just forward of the transom, usually one that is an unintentional result of a manufacturing defect.