46 C.F.R. § 153.953 Signals during cargo transfer.
Title 46 - Shipping
The master shall ensure that: (a) The tankship displays a red flag in the day and a red light at night when transferring cargo while fast to a dock; (b) The tankship displays a red flag when transferring cargo while at anchor; and (c) The red flag or the red light is visible from all sides of the tankship.
Title 46: Shipping
PART 153—SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS
Subpart C—Operations
Cargo Transfer Procedures
§ 153.953 Signals during cargo transfer.
