46 C.F.R. § 10.444 Service requirements for mate of Great Lakes and inland steam or motor vessels of not more than 1600 gross tons.
Title 46 - Shipping
The minimum service required to qualify an applicant for license as mate of Great Lakes and inland steam or motor vessels of not more than 1600 gross tons is: (a) Two years total service in the deck department of steam or motor, sail, or auxiliary sail vessels. One year of the required service must have been on vessels of over 100 gross tons. Six months of the required service must have been as able seaman, boatswain, quartermaster, or equivalent position on vessels of over 100 gross tons while holding a certificate as able seaman; or, (b) One year total service as master of steam or motor, sail, or auxiliary sail vessels, or operator of uninspected passenger vessels, of over 50 gross tons while holding a license as master steam or motor, sail, or auxiliary sail vessels of not more than 200 gross tons or operator of uninspected passenger vessels; or, (c) Six months total service as mate (pilot) of towing vessels on vessels of over 100 gross tons. [CGD 81–059, 54 FR 140, Jan. 4, 1989, as amended by USCG-1999–6224, 64 FR 63228, Nov. 19, 1999]
Title 46: Shipping
PART 10—LICENSING OF MARITIME PERSONNEL
Subpart D—Professional Requirements for Deck Officers' Licenses
§ 10.444 Service requirements for mate of Great Lakes and inland steam or motor vessels of not more than 1600 gross tons.

