46 C.F.R. § 32.55-35 Venting of cargo tanks on tank vessels constructed prior to November 10, 1936—TB/ALL.
Title 46 - Shipping
The venting of cargo tanks of tank vessels, the construction or alteration of which was started prior to November 10, 1936, shall be made to equal the requirements of tank vessels constructed before July 1, 1951, where the changes are, in the opinion of the Officer in Charge, Marine Inspection, necessary in the interests of safety: Provided, That on such vessels carrying Grade A cargo the requirements in §32.55–30(b) shall be met.
Title 46: Shipping
PART 32—SPECIAL EQUIPMENT, MACHINERY, AND HULL REQUIREMENTS
Subpart 32.55—Ventilation and Venting
§ 32.55-35 Venting of cargo tanks on tank vessels constructed prior to November 10, 1936—TB/ALL.