46 CFR § 69.173
Register Tonnage assignments for vessels with only one deck
April 15, 2021
A vessel without a second deck is assigned only one gross and one net register tonnage. In calculating the gross register tonnage, only the exemptions in §69.169 (a) through (d) are allowed. Markings under §69.177 are not permitted on these vessels.
[CGD 87-015b, 54 FR 37657, Sept. 12, 1989, as amended by USCG-2011-0522, 81 FR 18731, Mar. 31, 2016]