46 C.F.R. § 90.05-35
Vessels inspected and certificated under this subchapter may carry limited quantities of flammable and combustible liquid cargo in bulk in the grades indicated, provided the Certificate of Inspection is endorsed to permit such carriage:
(a) Cargo vessels:
(b) Miscellaneous Vessels, such as cable, salvage, pile-driving, and oil-drilling-rig vessels:
Note: Requirements for double hull construction for vessels carrying oil, as defined in 33 CFR 157.03, in bulk as cargo are found in 33 CFR 157.10d.
[CGD 84-043, 55 FR 37410, Sept. 11, 1990, as amended by CGD 90-051, 57 FR 362146, Aug. 12, 1992]