CFR > Title 46 - Shipping > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER B—MERCHANT MARINE OFFICERS AND SEAMEN (parts 10 to 16) > PART 11—REQUIREMENTS FOR OFFICER ENDORSEMENTS > SUBPART D—Professional Requirements for Deck Officers (§11.401 to §11.497) > 11.446—Service requirements for master of Great Lakes and inland steam or motor vessels of not more than 500 gross tons.

11.446—Service requirements for master of Great Lakes and inland steam or motor vessels of not more than 500 gross tons.

The minimum service required to qualify an applicant for an endorsement as master of Great Lakes and inland steam or motor vessels of not more than 500 gross tons is:
(a) Three years total service on vessels. One year of the required service must have been as a master, mate, or equivalent supervisory position on vessels of over 50 gross tons while holding a license or MMC endorsement as master, as mate, or as operator of uninspected passenger vessels.
(b) An applicant holding a license or MMC endorsement as master of ocean, near coastal, or Great Lakes and inland towing vessels is eligible for this endorsement after six months of service as master of towing vessels and completion of a limited examination. This requires three and one-half years of service. Two years of this service must have been served while holding a license or MMC endorsement as master or mate (pilot) of towing vessels, or mate.
[CGD 81-059, 54 FR 140, Jan. 4, 1989, as amended by USCG 1999-6224, 64 FR 63228, Nov. 19, 1999; USCG-2006-24371, 74 FR 11243, Mar. 16, 2009]