This rise is measured at the line of moulded beam.
Rise of floor.
A raised floor also raised flooring access floor ing or raised access computer floor provides an elevated structural floor above a solid substrate often a concrete slab to create a hidden void for the passage of mechanical and electrical services.
The distance above the keel that a tangent to the bottom at or near the keel cuts the line of maximum beam amidships.
The rise of the bottom shell plating line above the base line.