operations of such vessel. (3) Reengineer such vessels to permanently close all unnecessary access plugs and to reduce all through-hull penetrations to the minimum number and size necessary for operation. (4) Install in such vessels independently powered electric bilge pumps that are capable of dewatering such vessels at the volume of the largest remaining penetration in order to supplement either an operable Higgins pump or a dewatering pump of equivalent or greater capacity. (5) Install in such vessels not fewer than four independently powered bilge alarms. (6) Inspect any such vessel in water after each time a through-hull penetration of such vessel has been removed or uncovered. (7) Verify the watertight integrity of any such vessel in the water at the outset of each waterborne departure of such vessel. (8) Otherwise comply with any other provisions of Navigation and Vessel Inspection Circular 1–01 in the inspection, configuration, and operation of such vessels. (c) Prohibition on operation of noncompliant vessels The following amphibious passenger vessels may not operate on United States waterways: (1) Commencing as of the date the regulations required by subsection (a) are prescribed, any amphibious passenger vessel whose configuration or operation does not comply with the requirements in subsection (b). (2) Commencing as of the date specified by the Commandant of the Coast Guard pursuant to subsection (a)(2), any amphibious passenger vessel whose configuration or operation does not comply with the requirements in the regulations under subsection (a)(1).