46 C.F.R. § 151.45-8 Illness, alcohol, drugs.
Title 46 - Shipping
A person who is under the influence of liquor or other stimulants, or is so ill as to render him unfit to perform service shall not be permitted to perform any duties on the barge.
Title 46: Shipping
PART 151—BARGES CARRYING BULK LIQUID HAZARDOUS MATERIAL CARGOES
Subpart 151.45—Operations
§ 151.45-8 Illness, alcohol, drugs.