; or (B) the number of persons onboard the vessel; and (2) the requirement described in paragraph (1) shall not apply to vessels operating within the baseline from which the territorial sea of the United States is measured. (m) (1) The Secretary shall promulgate regulations requiring companies to maintain records of all incremental weight changes made to freight vessels inspected under this chapter, and to track weight changes over time to facilitate rapid determination of the aggregate total. (2) Records maintained under paragraph (1) shall be stored, in paper or electronic form, onboard such vessels for not less than 3 years and shoreside for the life of the vessel. . (2) Deadlines The Secretary shall— (A) begin implementing the requirement under section 3306(l) of title 46, United States Code, as amended by this subsection, by not later than 1 year after the date of the enactment of this Act; and (B) promulgate the regulations required under section 3306(m) of title 46, United States Code, as amended by this subsection, by not later than 1 year after the date of the enactment of this Act. (b) Engagement Not later than 1 year after the date of the enactment of this Act, the Commandant shall seek to enter into negotiations through the International Maritime Organization to amend regulation 25 of chapter II–1 of the International Convention for the Safety of Life at Sea to require a high-water alarm sensor in each cargo hold of a freight vessel (as that term is defined in section 2101 of title 46, United States Code), that connects with audible and visual alarms on the navigation bridge of the vessel. 207. Voyage data recorder