46 C.F.R. § 98.30-10 Pipe connections, and filling and discharge openings.
Title 46 - Shipping
No person may transfer a hazardous material to or from a portable tank on board a vessel, unless each filling and discharge opening in the tank bottom is equipped with the following: (a) For an IM 101 or IM 102 portable tank, the closures specified in 49 CFR 173.32c(g)(2); and (b) For an MPT, the valves and closures specified in §§64.33 through 64.41 of this chapter. [CGD 84–043, 55 FR 37412, Sept. 11, 1990]
Title 46: Shipping
PART 98—SPECIAL CONSTRUCTION, ARRANGEMENT, AND OTHER PROVISIONS FOR CERTAIN DANGEROUS CARGOES IN BULK
Subpart 98.30—Portable Tanks
§ 98.30-10 Pipe connections, and filling and discharge openings.

