(1)a vessel not measured under chapter
143 of this title if—
(A)the vessel is to be documented under chapter
121 of this title; or
(B)the application of a law of the United States to the vessel depends on the vessel’s tonnage.
(2)a vessel measured under chapter
143 of this title if the owner requests that the vessel also be measured under this chapter as provided in section
14305 of this title.