; or (ii) the enhanced substitute safety compliance program established by the Secretary under section 4510. 4508. Alternate safety compliance program (a) In general (1) The Secretary shall establish an alternate safety compliance program developed in coordination with the commercial fishing industry. (2) The program established under paragraph (1) may include requirements for— (A) a specific region or fishery (or both); and (B) any combination of regions or fisheries (or both). (b) Vessels required To comply Beginning on the date that is 3 years after the date the Secretary prescribes an alternate safety compliance program, the following vessels shall comply with such program: (1) A subject vessel that is— (A) at least 50 feet overall in length; (B) built before July 1, 2013; and (C) 25 years of age or older. (2) A fishing vessel, fish processing vessel, or fish tender vessel built before July 1, 2013, that undergoes a major conversion completed after the date the Secretary prescribes an alternate safety compliance program. (c) Exempt vessels (1) Notwithstanding subsection (b), vessels owned by a person that owns more than 30 vessels subject to that subsection are not required to comply with alternate safety compliance program requirements until January 1, 2030, if that owner— (A) enters into a compliance agreement with the Secretary that provides for a fixed schedule for all such vessels owned by that person to meet requirements of such paragraph by such date; and (B) is meeting such schedule. (2) A subject vessel that was classed before July 1, 2012, is exempt from the requirements of this section if such vessel— (A) remains subject to the requirements of a classification society approved by the Secretary