Entry & progression
Governing: 46 CFR 11.201(a), 11.304, 10.109(d), 15.401(b). The frame for every lesson that follows.
Why there are two
The United States licensed its deck officers long before STCW existed. The national system - Master and Mate, tonnage in GRT, routes as oceans, near-coastal, Great Lakes and inland - still governs who may run a US vessel. STCW sits on top of it for ships that go to sea internationally or are big enough to be caught. Since the MMC replaced the old licence and STCW certificate, both appear as endorsements on one credential (46 CFR 10.201(a)).
The rule that ties them together is short:
- 46 CFR 11.201(a) - "An applicant for any STCW endorsement must hold the appropriate national endorsement unless otherwise specified."
- 46 CFR 15.401(b) - a person may not serve where the law requires a national endorsement "as well as a corresponding STCW endorsement for service outside the boundary line" without holding both.
So the national endorsement is the foundation and the STCW endorsement is the passport. One without the other is half a qualification.
The nine deck endorsements
46 CFR 11.304 lists them. Section numbers are worth learning; the NMC and the training schools use them as shorthand.
| Level | Endorsement | CFR | STCW Code |
|---|---|---|---|
| Management | Master, 3,000 GT or more | 11.305 | A-II/2 |
| Management | Chief Mate, 3,000 GT or more | 11.307 | A-II/2 |
| Operational | OICNW, 500 GT or more | 11.309 | A-II/1 |
| Management | Master, 500 GT or more and less than 3,000 GT | 11.311 | A-II/2 |
| Management | Chief Mate, 500 GT or more and less than 3,000 GT | 11.313 | A-II/2 |
| Management | Master, less than 500 GT | 11.315 | A-II/2 |
| Management | Master, less than 500 GT, near-coastal | 11.317 | A-II/3 |
| Operational | OICNW, less than 500 GT | 11.319 | A-II/1 |
| Operational | OICNW, less than 500 GT, near-coastal | 11.321 | A-II/3 |
Note there is no STCW "Second Mate" or "Third Mate". Every watchkeeping officer below Chief Mate holds OICNW. The national Third Mate, Second Mate and Mate endorsements all feed OICNW.
What each system asks of you
National endorsement - sea service in GRT bands, a Coast Guard examination, and the Part 10 basics (medical, drug test, TWIC, character). Covered in USCG The MMC Application.
STCW endorsement - four things, repeated in almost every section of Subpart C:
- Sea service in a stated capacity, measured against GT.
- Competence against the STCW Code table, demonstrated by assessment.
- Approved training in a listed set of subjects.
- Renewal conditions - leadership, ECDIS and the 5-yearly safety refreshers.
TIP - Read the section, then the table Each Subpart C section ends with a table of national endorsements that give a short cut in. Most yacht officers qualify through those tables rather than the long-form service paragraphs. Module 2 and 3 work through them.
Operational versus management
STCW splits officers into operational level (OICNW) and management level (Chief Mate, Master). The split matters because 46 CFR 11.301(b)(1) says service as a rating will not be accepted to raise from operational to management level. Time as an Able Seafarer-Deck builds OICNW; only time as an officer builds Chief Mate and Master.
CAUTION - The endorsement name is not the job title A yacht may call you "Second Officer". The Coast Guard will ask what STCW endorsement you served under and what the vessel measured in GT. Keep your paperwork in their language.