Master’s Inland

Successful Completion of AME Course and Exam.

Sea Service Requirements – Master 25/50/100-Ton

360 days of service on any waters. This can be the same sea time form your OUPV for an INLAND Master’s License.

Recency – 90 days in the past 3 years on vessels
Tonnage Calculations

100 GRT – 90 days (25%) of service on vessels of 51 GRT or above, OR 180 days (50%) of service on vessels of 34 GRT or above.

50 GRT – 90 days (25%) of service of vessels of 26 GRT or above, OR 180 days (50%) of service on vessels 17 GRT or above. *** If applicant has any service prior to March 24, 2014 and at least one day of service on a vessel greater than 5 GRT, the MMC may be issued for 50 GRT without meeting the above tonnage calculation. This option expires for all applications dated after March 24, 2019.

25 GRT – 271 days (75%) or more for endorsement on vessels 5 GRT or less 90 days (25%) of service on vessels of 1-25 GRT OR 180 days (50%) of service on vessels 1-16 GRT. (If mariner does not meet the tonnage calculation for 50 GRT or more he or she is eligible for 25 GRT)
Great Lakes – 360 total days of service in the deck department, OF WHICH: 90 days of service on Great Lakes, otherwise the endorsement will be limited to inland waters of the United States (excluding the Great Lakes)