All tank ships of 5,000 DWT and above contracted after December 3, 2001 must comply with the intact stability requirements of Regulation 27, Annex I MARPOL 73/78.
Code of Federal Regulations
[USCG-2000-7641, 66 FR 55573, Nov. 2, 2001, as amended by USCG-2009-0416, 74 FR 27441, June 10, 2009]