Code of Federal Regulations Title 5. Administrative Personnel § 5.630.703 Computation of shore leave

(a) An employee earns shore leave at the rate of 1 day of shore leave for each 15 calendar days of absence on one or more extended voyages.

(c) In computing days of absence, an agency shall include (1) the beginning date of a voyage and the termination date of a voyage;  (2) the days an employee spends traveling to join an oceangoing vessel to which assigned when the vessel is at a place other than the port of origin;  (3) the days an employee spends traveling between oceangoing vessels when the employee is assigned from one vessel to another;  (4) the period representing the number of days within which an employee is reasonably expected to return to the port of origin when his oceangoing vessel's voyage is terminated, or his employment as an officer or crewmember is terminated, at a port other than the port of origin;  (5) for an employee who is an officer or crewmember, the days on which he is on sick leave when he becomes sick during a voyage (whether or not continued as a member of the crew) but not beyond the termination date of the voyage of the oceangoing vessel or his repatriation to the port of origin, whichever is earlier;  (6) for an employee other than an officer or crewmember, the days on which he is carried on sick leave but not beyond the date on which he returns to the port of origin or the termination date of the voyage, whichever is earlier;  and (7) the days of approved leave from a vessel (paid or unpaid) during a voyage.