If a vessel has a trunk and does not meet the requirements of Sec. 45.61 or has continuous or substantially continuous hatchway side coamings between detached superstructures, the minimum area of the freeing port openings must be obtained from the following table: ------------------------------------------------------------------------
Area of
freeing
ports in
relation
Breadth of hatchway or trunk in relation to the breadth of to the
ship total
area of
the
bulwarks
(percent)------------------------------------------------------------------------40 percent or less........................................... 2075 percent or more........................................... 10------------------------------------------------------------------------ The area of freeing ports at intermediate breadths must be obtained by linear interpolation.