(a) An existing vessel need not comply with Sec. Sec. 184.402(c), 184.404, 184.410, and 184.602 unless the cognizant OCMI specifically requires compliance due to the route or service of the vessel.
(b) An existing vessel need not comply with the requirements of Sec. 184.610 until March 11, 2001, or 10 years after its keel was laid or the vessel was at a similar stage of construction, whichever is later.
(c) An existing vessel need not comply with the requirements of Sec. 184.710 until March 11, 1997.