; (2) with only Lakes, Bays, and Sounds or Rivers routes recorded on such vessel’s certificate of documentation under section 176.110 of title 46, Code of Federal Regulations; and (3) (A) that, with respect to a vessel that is described in subsection (a)(1), is listed on a vessel response plan under part 155 of title 33, Code of Federal Regulations, on the date of the enactment of this Act; or (B) that, with respect to a vessel described in subsection (a)(2), is regularly engages in harbor assist operations, including the docking, undocking, mooring, unmooring, and escorting of vessels with limited maneuverability. (c) Limitations A vessel exempted under subsection (a) is subject to the following operating limitations: (1) Response vessels The voyage of a vessel exempted under subsection (a)(1) shall— (A) be less than 12 hours in total duration; and (B) originate and end in the inspection zone of a single Officer In-Charge, Marine Inspection, as defined in section 3305(d)(4) of title 46, United States Code. (2) Escort vessels The voyage of a vessel exempted under subsection (a)(2) shall— (A) be less than 12 hours in total duration; (B) originate and end in the inspection zone of a single Officer In-Charge, Marine Inspection, as such term is defined in section 3305(d)(4) of title 46, United States Code