- What the QMED Electrician/Refrigerating Engineer Endorsement Actually Is
- What We Can and Cannot Say About Pay
- What Drives Earnings for This Rating
- Who Hires Electrician/Refrigerating Engineers
- Technical Skills That Make You Worth More
- The Exam as the Gate to the Pay Scale
- How This Rating Compares to Adjacent Engine Ratings
- A Practical Plan to Position Yourself for Higher Pay
- Frequently Asked Questions
- The QMED02 Electrician-Refrigerating Engineer endorsement is issued through the U.S. Coast Guard National Maritime Center, not a private certifying body.
- The exam has two modules: Q802 Electrician and Q803 Refrigerating Engineer, each with its own published topic list.
- No credible, official salary figure exists for this rating, so be wary of any site quoting precise averages.
- Pay is driven mainly by vessel type, employer, union agreements, and hitch structure rather than the endorsement alone.
What the QMED Electrician/Refrigerating Engineer Endorsement Actually Is
Before talking about earnings, it helps to be precise about what you would be earning with. This guide covers one specific credential: the QMED02 Electrician-Refrigerating Engineer endorsement, administered through the United States Coast Guard National Maritime Center (NMC). It is not the Junior Engineer, Oiler, Boiler Technician-Watertender, or Machinist-Pump Technician rating. Each of those is a separate QMED rating with its own scope, and this article does not borrow pay assumptions from them.
The NMC publishes two examination modules for this endorsement: Q802 Electrician and Q803 Refrigerating Engineer. These are modules, not percentage-weighted blueprint domains, so there is no official statement that one module counts for a set share of your result. If you want the structure laid out in detail, see our QMED Exam Domains 2026: Complete Guide to All 2 Content Areas. For background on the credential itself, start with What Is QMED? or What Does QMED Stand For?.
What We Can and Cannot Say About Pay
Most "salary guide" pages for maritime credentials lean on a single, confident-looking average. That number is usually unsourced, blended across unrelated ratings, or lifted from a different industry entirely. We are not going to do that here.
What we can do is explain the mechanics that determine pay for someone holding this endorsement, so you can evaluate real offers with the right questions. For a cost-versus-benefit framing, our Is the QMED Certification Worth It? Complete ROI Analysis 2026 pairs well with this article, and QMED Certification Cost 2026: Complete Pricing Breakdown covers the investment side.
What Drives Earnings for This Rating
Because the endorsement is a qualification rather than a job title with a fixed wage, your earnings depend on a set of variables that sit around it. Understanding these is more useful than chasing a headline number.
Vessel type and trade
An electrician-refrigerating engineer works across very different vessels. A ship with substantial refrigeration plant, extensive air conditioning and ventilation, and complex electrical distribution places heavier demands on this rating than a simple platform with minimal systems. Vessels that carry refrigerated cargo or provisions, or that run large HVAC and cold-storage installations, lean on the Q803 skill set. Vessels with heavy generation, distribution, and motor-control loads lean on the Q802 side.
Employer and agreement structure
Whether you sail under a union contract, a company scale, or a negotiated individual arrangement shapes pay far more than the endorsement label does. Contracts typically define base rates, overtime rules, and benefits. When comparing offers, ask how overtime is calculated and what is guaranteed versus variable.
Hitch length and rotation
Time on board versus time home changes how an annual figure should be read. Two jobs with the same daily rate can produce very different yearly totals depending on rotation. Always translate an offer into your actual expected days worked.
Position within the engine department
QMED endorsements sit within the engine department's unlicensed hierarchy. Your specific role on a given vessel, and how many QMED-qualified positions exist, affects both opportunity and compensation. Our page on QMED Jobs goes deeper on how these roles are filled.
Key Takeaway
Treat the endorsement as the key that opens the door, and treat vessel type, contract, and rotation as the factors that set the price on the other side of it. Compare offers on total expected compensation across a realistic work year, not on a single day rate.
Who Hires Electrician/Refrigerating Engineers
Holders of this endorsement are sought by operators who run vessels with serious electrical and refrigeration or climate-control systems. Typical employer categories include:
- Commercial deep-sea and coastwise operators running vessels with large electrical plants and cargo or provision cooling.
- Passenger and hospitality vessels where air conditioning, heating and ventilation, and refrigerated food storage are central to daily operations.
- Government and support fleets that crew engine departments with documented, Coast Guard-recognized ratings.
- Offshore and specialty vessels with significant electrical distribution and auxiliary machinery.
The common thread is complexity. The more electrical, refrigeration, and air-handling equipment a vessel carries, the more value a combined electrician and refrigerating engineer rating brings. Browse the broader picture at QMED Jobs, and see QMED Requirements 2026: Eligibility, Prerequisites & How to Qualify to confirm you meet the entry conditions before targeting employers.
Technical Skills That Make You Worth More
An employer is not paying for a piece of paper; they are paying for someone who can keep critical systems running at sea. The published NMC topic lists tell you exactly what competence the endorsement is meant to certify, and those topics map directly to the work.
Domain 1: Electrician (Q802)
The electrical module covers the full chain from generation to load, plus the safety and shipboard context around it.
- Power systems: generation equipment, distribution systems, A/C circuits, D/C circuits, and batteries.
- Control and drives: motors, motor controllers, and remote control equipment.
- Diagnostics and upkeep: troubleshooting, maintenance, calculations, and measuring devices and instruments.
- Electronics and signaling: electronic principles and communication devices.
- Shipboard systems: steering, compressed air, lubrication, pumps, fans, and blowers, and deck machinery.
Domain 2: Refrigerating Engineer (Q803)
The refrigeration module centers on thermal systems and the mechanical plant that supports them.
- Core thermal topics: refrigeration principles, refrigeration systems, air conditioning, and heating/ventilation.
- Mechanical foundation: heat exchangers, hydraulic principles, pipes, fittings, and valves, and lubrication principles.
- Shared electrical content: electrical, electronic principles, motors, motor controllers, measuring devices, and troubleshooting.
- Equipment care: bearings, maintenance procedures, auxiliary machinery, and the use of hand and power tools.
Notice the overlap. Both modules include general subjects such as basic safety procedures, pollution prevention, drawings and tables, instrumentation principles, and care of equipment and machine parts, along with safety and environmental protection topics like firefighting, damage control, elementary first aid, and hazardous materials. That shared foundation is why someone who truly understands motors, controllers, and troubleshooting can credibly work both sides of the rating.
Where the pay leverage tends to be
Without inventing figures, it is reasonable to say that scarce, hard-to-substitute skills give you negotiating leverage. Reliable fault-finding on motor controllers, confident work on refrigeration and air-conditioning plant, and comfort reading drawings and tables are the kinds of competence an engineer-in-charge notices quickly. Candidates who can speak fluently about these topics in an interview tend to be taken more seriously than those who only hold the paper.
The Exam as the Gate to the Pay Scale
Your earning potential in this rating starts with passing. The endorsement is earned through NMC examination, so exam readiness is effectively the first line item in any salary plan. A failed attempt costs time, and time on shore is time not earning at sea.
To gauge readiness, read How Hard Is the QMED Exam? Complete Difficulty Guide 2026 and QMED Pass Rate 2026: What the Data Shows. For the scoring threshold itself, see QMED Passing Score 2026: Exactly What You Need to Pass, and for logistics, QMED Exam Dates 2026: Testing Windows, Deadlines & Scheduling. You can also work through realistic questions on our QMED practice test site to find weak topics before they cost you an attempt.
Scheduling prep around the two modules
This is the one place where a study schedule is worth sketching, because the two modules reward different sequencing. Build the shared electrical and safety foundation first, then specialize.
Shared foundation
- General subjects, safety procedures, drawings and tables, measuring instruments
- Firefighting, damage control, hazardous materials, and pollution prevention
Q802 Electrician depth
- A/C and D/C circuits, batteries, generation and distribution
- Motors, motor controllers, troubleshooting, and calculations
Q803 Refrigerating Engineer depth
- Refrigeration principles, air conditioning, heating/ventilation
- Heat exchangers, hydraulic principles, pipes, fittings, and valves
Integration and review
- Mixed practice across both modules and a pass through weak topics
For a fuller approach, read the QMED Study Guide 2026: How to Pass on Your First Attempt, and keep the QMED Cheat Sheet 2026: One-Page Review of Must-Know Facts handy for last-minute review.
How This Rating Compares to Adjacent Engine Ratings
Rather than comparing dollar amounts we cannot verify, it is more honest to compare scope. The table below contrasts what each rating is built around, so you can see why this combined endorsement carries distinct value.
| Rating | Primary focus | Why it matters for opportunity |
|---|---|---|
| Electrician-Refrigerating Engineer (QMED02) | Electrical systems plus refrigeration, air conditioning, and ventilation | Covers two specialized plants; suits vessels with heavy electrical and climate-control loads |
| Junior Engineer | General engine-room duties | Broader but less specialized scope |
| Oiler | Lubrication and routine machinery watch duties | Entry-oriented engine-department role |
| Boiler Technician-Watertender | Boilers and steam plant | Relevant to steam-driven vessels |
| Machinist-Pump Technician | Machining and pumping systems | Mechanical-repair emphasis |
The takeaway is not that one rating is "worth more" in the abstract. It is that this endorsement certifies a particular, technically demanding skill pairing, and the vessels that need that pairing are the ones that value it. If you are weighing which path suits you, QMED Certification and What Is A QMED? give useful context on how the ratings fit together.
A Practical Plan to Position Yourself for Higher Pay
Turning an endorsement into better earnings is a sequence of deliberate steps rather than a single event.
- Confirm eligibility first. Check the entry conditions in QMED Requirements 2026 so you do not invest prep time before you qualify.
- Budget the full cost. Use QMED Certification Cost 2026 to understand what you will spend, since the return on any credential depends on what you put in.
- Prepare to the published scope. Work from the Q802 and Q803 topic lists, and rehearse under realistic conditions with the practice exams on the main site.
- Document your practical experience. Be ready to describe real troubleshooting jobs, refrigeration plant work, and motor-controller repairs in concrete terms.
- Compare offers on total compensation. Evaluate contract terms, overtime rules, rotation, and vessel systems rather than a single rate.
- Keep building depth. The more of the Q802 and Q803 topic range you can genuinely perform, the stronger your case for roles on complex vessels.
Key Takeaway
Your most controllable salary lever is demonstrable competence across both modules. Passing opens the door; being the person who can diagnose a failed controller and a struggling refrigeration circuit on the same watch is what makes employers compete for you.
If you are still deciding whether the investment makes sense, return to Is the QMED Certification Worth It? and the general overview at QMED Training. You can also revisit this page at QMED Salary Guide 2026: Complete Earnings Analysis as you compare offers.
Frequently Asked Questions
There is no official, published wage figure for this rating from the National Maritime Center, which governs the endorsement but not pay. Earnings depend on your employer, vessel type, contract terms, overtime rules, and rotation. Treat any precise "average" without a named source with caution, and compare real offers on total expected compensation.
The United States Coast Guard National Maritime Center governs this endorsement. It publishes the Q802 Electrician and Q803 Refrigerating Engineer exam topic lists that define what candidates must know.
No. They are examination modules rather than percentage-weighted blueprint domains, so there is no published statement assigning each a fixed share of the result. Prepare for both modules thoroughly rather than gambling on one.
No. The endorsement qualifies you, but pay is set by employers, agreements, and the vessel's needs. Practical skill in electrical troubleshooting and refrigeration, air conditioning, and ventilation systems is what strengthens your negotiating position once you are qualified.
Start with the shared general and safety topics, then build depth in Q802 electrical subjects and Q803 refrigeration, air conditioning, and ventilation subjects. Our QMED study guide and the practice test site help you find and close weak areas before exam day.