33 C.F.R. § 143.201 Existing MODUs exempted from new design requirements.
Title 33 - Navigation and Navigable Waters
Any mobile offshore drilling unit built before, under construction on, or contracted for prior to April 5, 1982 is not required to meet the design requirements of this subpart until the unit is rebuilt. Until rebuilt, the unit must continue to comply with the design requirements applicable to the unit on April 4, 1982. [CGD 78–160, 47 FR 11011, Mar. 15, 1982]
Title 33: Navigation and Navigable Waters
PART 143—DESIGN AND EQUIPMENT
Subpart C—Mobile Offshore Drilling Units
§ 143.201 Existing MODUs exempted from new design requirements.

