Weber introduced three independent factors that form his theory of stratification hierarchy; class, status, and power: 1  Class: A person's economic position in a society. 2  Weber differs from Marx in that he does not see this as the supreme factor in stratification.
carina - any of various keel-shaped structures or ridges such as that on the breastbone of a bird or that formed by the fused petals of a pea blossom 3. keel - one of the main longitudinal beams (or plates) of the hull of a vessel; can extend vertically into the water to provide lateral stability
The beam is the widest part of the boat when measured a few inches below the top of the side walls, usually where the rub rails are. If it's a sail boat, it's the post on which the boom is, and the 54  means 54 inches. Beam is the measurement of the width of the boat, at the widest part.