46 C.F.R. § 14.403
(a) Certain requirements of Title 46, United States Code do not apply to the employment of merchant mariners on oceanographic research vessels. These requirements are those concerned with, among other things, the shipment and discharge of mariners, their pay and allotments, and the adequacy of their clothing. 46 U.S.C. 2113(2) allows exemptions of oceanographic research vessels from certain requirements of parts B, C, F, or G of subtitle II of 46 U.S.C., upon such terms as the Secretary of the Department of Homeland Security deems suitable. The exemptions available under this subpart are subject to the following terms:
(b) For any oceanographic research vessel sailing with any mariner employed by any firm, association, corporation, or educational or governmental body or agency, the Commandant may grant exemptions from—
[CGD 94-004, 61 FR 56637, Nov. 4, 1996, as amended by USCG-2004-17914, 78 FR 77999, Dec. 24, 2013; USCG-2021-0834, 89 FR 102337, Dec. 17, 2024]