46 C.F.R. § 45.75 Intermediate freeboard.
Title 46 - Shipping
The minimum intermediate freeboard (fI) in inches is obtained by the formula: fI=f(s)+T s(100)/L
where: L=length L in feet but not less than 400 feet.
Title 46: Shipping
PART 45—GREAT LAKES LOAD LINES
Subpart C—Freeboards
§ 45.75 Intermediate freeboard.