Entry & progression
Able Seafarer-Engine (STCW III/5) is the senior engine rating. Age 18. You must hold RFPEW first — there is no way round it — and then twelve months while qualified as an RFPEW, or six months plus approved training.
Get the name right
NOTE — It is Able Seafarer, not Able Seaman The 25 November 2024 rule renamed Able Seaman → Able Seafarer. The engine variant is Able Seafarer-Engine. A source still writing "Able Seaman-Engine" has not been updated in over a year — treat everything else on it with the same caution.
The sequence — and it is a sequence
46 CFR 12.607 is explicit: an applicant must first hold RFPEW. This is not a recommendation or a usual route. It is a gate. You cannot go straight to Able Seafarer-Engine from a QMED, however much engine time you have, because the twelve months of qualifying service must be performed while qualified as RFPEW.
The order of operations
- Build the national side — Wiper, then QMED (Module 2).
- Take RFPEW — free of additional service if you hold any QMED.
- Then, while qualified as RFPEW, build the engine-department seagoing service.
- Apply for Able Seafarer-Engine at 18 or over.
The service
| Route | Requirement (while qualified as RFPEW) |
|---|---|
| Sea service | Not less than 12 months of engine-department seagoing service |
| Service + training | Not less than 6 months, plus approved training |
Minimum age: 18.
WARNING — Service before RFPEW does not count toward III/5 This is the error that costs a year. The twelve months must be served while qualified as an RFPEW. Engine time you did before the RFPEW was issued — however hard, however well documented — does not fill this requirement. Get the RFPEW early, so the clock is already running while you are doing the work anyway.
What it is worth
Able Seafarer-Engine is the rating that a chief engineer actually wants at his elbow. It says: this person can be given a job below and be trusted to come back and tell you the truth about it. On a yacht with a two-man engineering department, that is not a nice-to-have — it is the difference between the chief getting sleep and the chief not getting sleep.
Where it stops
It is still a support-level endorsement. In the language of 46 CFR 10.107, the support level is "performing assigned tasks, duties, or responsibilities… under the direction of an individual serving in the operational or management level." Able Seafarer-Engine does not make you an officer of the watch, and it does not, on its own, raise you to one.
That step — the operational level, the Officer in Charge of an Engineering Watch — is a different animal, and it takes you out of the ratings entirely. It also runs straight into the citizenship gate at 11.201(d). Module 4 picks that up.