46 C.F.R. § 45.143 Hull openings above freeboard deck.
Title 46 - Shipping
Closures for openings above the freeboard deck must be as strong as the structure to which they are attached and must be weathertight.
Title 46: Shipping
PART 45—GREAT LAKES LOAD LINES
Subpart D—Conditions of Assignment
§ 45.143 Hull openings above freeboard deck.
