U.S. Code > Title 46 Shipping > Subtitle II—Vessels and Seamen (§§ 2101—14702) > Part J—Measurement of Vessels (§§ 14101—14702) > CHAPTER 145—REGULATORY MEASUREMENT (§§ 14501—14522) > SUBCHAPTER II—FORMAL SYSTEMS (§§ 14511—14513) > § 14513. Dual tonnage measurement

§ 14513. Dual tonnage measurement

(a) On application by the owner and approval by the Secretary, the tonnage of spaces prescribed by the Secretary may be excluded in measuring under this section the gross tonnage of a vessel measured under section 14512 of this title. The spaces prescribed by the Secretary shall be comparable to the spaces that could have been excluded under section 2 of the Act of September 29, 1965 (Public Law 89–219, 79 Stat. 891), as section 2 existed immediately before the enactment of this section.
(b) The Secretary shall prescribe the design, location, and dimensions of the tonnage mark to be placed on a vessel measured under this section.
(c)
(1) If a vessel’s tonnage mark is below the uppermost part of the load line marks, each certificate stating the vessel’s tonnages shall state the gross and net tonnages when the mark is submerged and when it is not submerged.
(2) Except as provided in paragraph (1) of this subsection, a certificate stating a vessel’s tonnages may state only one set of gross and net tonnages.