46 C.F.R. § 201.44 Date of service.
Title 46 - Shipping
The date of service of documents shall be the day when the matter served is deposited in the United States mail, shown by the postmark thereon, or is delivered in person, as the case may be.
Title 46: Shipping
PART 201—RULES OF PRACTICE AND PROCEDURE
Subpart D—Form, Execution and Service of Documents (Rule 4)
§ 201.44 Date of service.