46 C.F.R. § 147.85 Oxygen.
Title 46 - Shipping
(a) Eighty five cubic meters (3000 standard cubic feet) or less of oxygen may be on board any vessel. (b) More than 85 m3 (3000 standard cubic feet) of oxygen may be on board a vessel engaged in industrial operations, if it is stowed on deck or in a well ventilated space.
Title 46: Shipping
PART 147—HAZARDOUS SHIPS' STORES
Subpart B—Stowage and Other Special Requirements for Particular Materials
§ 147.85 Oxygen.