Section 401.451 - Pilot rest periods(a) Except as provided in paragraph (b) of this section:(1) Each United States Registered Pilot upon completing an assignment at a change point designated in § 401.450 , and(2) Each United States Registered Pilot upon completing a series of assignments totaling more than 10 hours with no more than 2 hours rest between assignments, must not perform pilotage services for at least 10 hours.(b) In the event of an emergency or other compelling circumstances a pilotage pool may assign a United States Registered Pilot for service before their 10-hour rest period required under paragraph (a) of this section is completed. Pilotage pools must advise the Director of each assignment made under this paragraph.CGFR 68-57, 33 FR 6479, Apr. 27, 1968. Redesignated and amended at 61 FR 32655, June 25, 1996, and further redesignated and amended by USCG-1998-3976, 63 FR 35139, 35140, June 29, 1998