33 CFR 155.700: Designation of person in charge.

Each operator or agent of a vessel with a capacity of 250 or more barrels of fuel oil, cargo oil, hazardous material, or liquefied gas as regulated in Table 4 of 46 CFR part 154, or each person who arranges for and hires a person to be in charge of a transfer of fuel oil, of a transfer of liquid cargo in bulk, or of cargo-tank cleaning, shall designate, either by name or by position in the crew, the person in charge (PIC) of each transfer to or from the vessel and of each tank-cleaning.