46 C.F.R. § 42.15-20 Cargo and other hatchways.
Title 46 - Shipping
(a) The construction and the means for securing the weathertightness of cargo and other hatchways in positions 1 and 2 shall be at least equivalent to the requirements of §§42.15–25 and 42.15–30. (b) Coamings and hatchway covers to exposed hatchways on decks above the superstructure deck shall comply with the requirements of the assigning authority. [CGFR 68–60, 33 FR 10060, July 12, 1968, as amended by CGFR 68–126, 34 FR 9014, June 5, 1969]
Title 46: Shipping
PART 42—DOMESTIC AND FOREIGN VOYAGES BY SEA
Subpart 42.15—Conditions of Assignment of Freeboard
§ 42.15-20 Cargo and other hatchways.