The Master 200 GRT Oceans credential allows the holder to serve as Master on vessels less than 200 GRT (except towing vessels) on any waters.


NMC Checklist for Master 200 Oceans
CFR Reference: 46 CFR 11.424

RECENCY: 90 days in the past 3 years on vessels of appropriate tonnage

ENGINE DEPARTMENT EXPERIENCE gained on vessels of appropriate tonnage may be creditable for up to 90 days of the sea service requirements.


DECK EXAMINATION GUIDE: ESS 1-17. At this link, you will find two Deck Examination Guides.  If your qualifying service for the license began before March 24, 2014, you may opt to be examined under the procedures of the old Deck Examination Guide.  The old guide’s examinations are significantly less difficult in most cases than the new guide’s.

To Apply for the Credential

Application Procedure

Credential Assistance

If you need help determining your eligibility or completing your application, please email us at Credential Assistance.


Mariners preparing for these credential examinations can begin on almost any Monday.  The course of study lasts approximately 6 weeks. The tuition is good for one year.