46 CFR § 69.163
Under-deck tonnage
April 15, 2021
The under-deck tonnage provisions in §69.109 apply; except that, under this subpart, spaces between the line of the tonnage deck and the tonnage deck itself due to a stepped tonnage deck are included in under-deck tonnage.
[CGD 87-015b, 54 FR 37657, Sept. 12, 1989, as amended by USCG-2011-0522, 81 FR 18731, Mar. 31, 2016]