Grace periods allowed in connection with the requirements of this subpart are as follows:
(a) Annual or six-month requirements - by the end of the voyage during which they become due;
(b) Quinquennial requirements - within six months after the date when due;
(c) Grace periods shall not be deemed to extend subsequent due dates.
[39 FR 22096, June 19, 1974, as amended at 76 FR 33610, June 8, 2011]