46 CFR § Sec. 3
Voyage commencements
April 15, 2021
(a) All voyages shall commence at 0001 hours of the date on which any of the following activities occur first:
(1) Vessel goes on loading berth, or
(2) Vessel sails outward on a new voyage, or
(3) Following termination of the previous voyage as prescribed in section 4(a) of this order.
(4) Following termination of an idle status period as prescribed in section 5 (a) and (b) of this order.