Entry & progression
Entry: engineroom service, part of it as a QMED. Progression: the tiers are earned by the quantity of service, not by the size of the engines. Assumes: you have read L1.1 and know all three tiers are capped at < 500 GRT.
| DDE tier | Sea service (11.524(b)) | Route (11.501(c)) | Tonnage | Min age |
|---|---|---|---|---|
| DDE < 1,000 HP / 750 kW | 1 year engineroom, 6 months of it as QMED or equivalent | near-coastal or inland only | < 500 GRT | 18 |
| DDE < 4,000 HP / 3,000 kW | 2 years engineroom, 1 year of it as QMED or equivalent | near-coastal or inland only | < 500 GRT | 19 |
| DDE — Unlimited (propulsion power) | 3 years engineroom, 18 months of it as QMED or equivalent | any waters | < 500 GRT | 21 |
The ages are not arbitrary. Section 11.201(e) sets 21 as the default age for every officer endorsement and then names the exceptions: 19 for DDE under 4,000 HP, 18 for DDE under 1,000 HP. Nothing else about the credential moves those numbers.
The QMED portion — and the myth to unlearn
WARNING — "Wiper → Oiler → QMED" is wrong. Oiler is a QMED rating. 46 CFR 12.501(a): "A QMED is any person below officer and above the rating of Coal Passer or Wiper…" The ladder is Wiper → QMED, and QMED comes in flavours. Anyone who tells you Oiler is a rung below QMED is describing a ladder that does not exist.
The QMED — Qualified Member of the Engine Department — is a rating, and ratings live in 46 CFR Part 12, not Part 11. There are five current QMED ratings (12.501(b)(1), as amended by 89 FR 93101, 25 November 2024):
- Boiler Technician/Watertender
- Oiler
- Junior Engineer
- Electrician/Refrigerating Engineer
- Pump Technician/Machinist
Each is endorsed separately *"unless the applicant qualifies for all QMED ratings, in which case the endorsement will read 'QMED—any rating.'"* Getting there takes 6 months of service in a rating at least equal to Wiper or Coal Passer (12.503(a)), age 18, a medical, a drug test and the QMED examination. Approved training can substitute for up to half the service, and a school-ship graduate qualifies with none (12.503(b)).
NOTE — Dead endorsement names — check the date on anything you read The November 2024 final rule renamed the ratings: Fireman → Boiler Technician, Pumpman → Pump Technician, Able Seaman → Able Seafarer. And Deck Engineer, Deck/Engine Mechanic and Engineman are no longer issued as originals (12.501(b)(2)) — renewable if already held, not obtainable. Any list of QMED ratings that includes Engineman is out of date.
"Or equivalent position"
The CFR says QMED or equivalent position, and mariners routinely decide for themselves that their yacht time was equivalent. Do not. Document the work, present it, and let the NMC rule on it. An assumption of equivalence that the evaluator rejects costs you months.
How a year is actually counted
46 CFR 10.107 defines the units: "Year means 360 days", "Month means 30 days", and "Day means… 8 hours of watchstanding or day-working not to include overtime." So the one year for a DDE 1,000 HP is 360 creditable days, not a calendar year. On a two-watch vessel a 12-hour day may credit as 1½ days. On vessels under 100 GRT a day is 8 hours but "in no case will this period be less than 4 hours."
On a hard-working boat you build service faster than the calendar suggests. On a boat that sits on the dock all winter, you build it slower. Count days, not seasons.