- What This Cheat Sheet Covers (and What Chief Engineer Unlimited Actually Is)
- Route Facts: Which Candidates Actually Sit the Modules
- The Seven-Module Map at a Glance
- Q511 and Q512: General Subjects and Management Level
- Q513, Q514, Q515: Steam, Motor, and Gas Turbine Plants
- Q516 and Q517: Safety, Environment, and Electrical/Control
- Why Your Propulsion Applicability Changes Your Exam
- Regulatory Anchors to Memorize
- A Module-Sequenced Review Plan
- Quick Answers
- CEU here means Chief Engineer (Unlimited), a U.S. Coast Guard National Maritime Center endorsement, not a continuing-education unit.
- The original-applicant route for military or foreign-endorsement candidates uses the 1AE01 management-level modules Q511 through Q517.
- First Assistant Engineer to Chief Engineer-Unlimited progression after prior management-level examination requires no further examination under 46 CFR...
- The modules are not published as percentage-weighted domains, so never trust any site that quotes exact weights.
What This Cheat Sheet Covers (and What Chief Engineer Unlimited Actually Is)
This page is a compressed reference for one specific credential: the Chief Engineer (Unlimited) endorsement issued under the authority of the United States Coast Guard National Maritime Center (NMC). It is the top engineering license in the U.S. merchant marine for unlimited horsepower and unlimited tonnage service. It is not Chief Engineer Limited, and it is not First Assistant Engineer, although the First Assistant Engineer examination structure turns out to matter a great deal, as you will see below.
If you landed here searching for something about continuing education units or another credential that shares the same letters, this is not that. For background on the name itself, see What Is CEU? and What Does CEU Stand For?. For the full practice-question experience, the CEU practice test site is built around the module topics listed below.
Route Facts: Which Candidates Actually Sit the Modules
The governing reference is the USCG NMC Deck and Engineering Examination Guide (MCP-MA-NMC2-08(01)), section 3.1.1, page 41. It states that an applicant for an Original Chief Engineer-Unlimited endorsement based on military service or experience under a foreign endorsement is administered the 1AE01 management-level examination, modules Q511 through Q517.
That is an issuer-defined original-applicant route. It is not a separate, universal Chief Engineer examination that every candidate takes.
| Candidate Path | Examination Consequence |
|---|---|
| Original Chief Engineer-Unlimited based on military service or foreign-endorsement experience | Administered the 1AE01 management-level modules Q511-Q517 |
| First Assistant Engineer progressing to Chief Engineer-Unlimited after prior management-level examination | No further examination required under 46 CFR 11.903(c)(6) |
| Any route, any propulsion applicability | Assigned modules depend on route and requested plant types; confirm with the NMC |
The practical meaning: many working engineers earn the management-level examination credit at the First Assistant Engineer stage, and the step to Chief is then a sea-service and application matter rather than another exam. Candidates entering through military or foreign credentials face the full module set. Our CEU requirements guide goes deeper on eligibility, and the CEU certification cost breakdown covers the fee side. For fees, always verify current NMC fee schedules directly, since this sheet does not quote dollar figures.
The Seven-Module Map at a Glance
Here is the whole module matrix on one screen. Memorize the numbering, because NMC correspondence, exam results, and study references all use the Q-codes.
| Module | Title | Core Theme |
|---|---|---|
| Q511 | General Subjects I | Auxiliary systems, prints and tables, hydraulics, administration |
| Q512 | General Subjects II | Refrigeration/HVAC, safety, management-level skills, regulations |
| Q513 | Steam Plants | Boilers, feedwater, turbines, steam-plant control |
| Q514 | Motor Plants | Main and auxiliary engines, fuel injection, air charging |
| Q515 | Gas Turbine Plants | Gas turbine operation, controls, heat-recovery steam side |
| Q516 | Engineering Safety & Environmental Protection | Fire, flooding, damage control, pollution prevention |
| Q517 | Electrical, Electronic, & Control Engineering | Motor controllers, distribution, high voltage, networks |
For a deeper tour of each content area, see the CEU exam domains guide.
Q511 and Q512: General Subjects and Management Level
Q511 - General Subjects I
This module is the broad machinery-systems foundation. Expect questions that require you to read and interpret engineering prints and tables, then reason about how a system behaves.
- Hydraulics, including steering systems, deck machinery, and governors
- Bilge systems and oily water separators
- Sanitary and sewage systems, and freshwater systems
- Lubrication systems, bearings, and cooling systems
- Propellers and shafting; distilling systems; ventilation systems
- Automation and control systems; administration
Q512 - General Subjects II
This is where the exam stops being only about machinery and starts testing whether you can run an engineering department. It pairs technical systems with management-level judgment.
- Refrigeration and air conditioning systems and their controls
- Safety and casualty control
- Management skills: crisis management, operational planning, assessing competency, employee familiarization, arbitration
- Shipyard work, inspections and surveys, vessel layup
- Internal documents, maintenance systems, technical analysis, troubleshooting
- International laws and conventions; codes and regulations
Q513, Q514, Q515: Steam, Motor, and Gas Turbine Plants
These three modules are the propulsion-plant heart of the examination. Which ones you are assigned is tied to the plant types you request on your endorsement, so a candidate seeking only motor propulsion does not necessarily face the same set as one seeking steam and gas turbine as well.
Q513 - Steam Plants
- Steam generators: main boilers, feedwater systems, condensate systems, recovery systems
- Fuel and boiler water chemistry: main fuel systems and treatment fundamentals
- Steam engines: main turbines, auxiliary turbines, governor systems, lubrication, drive systems
- Control and automation systems; auxiliary diesels; safety and casualty control
Q514 - Motor Plants
- Motor propulsion: main engines and auxiliary engines, starting systems, governors
- Fuel path: fuel systems, fuel injection systems, air-charging systems
- Lubrication, control, and automation systems
- Auxiliary boilers and water chemistry; safety and casualty control
Q515 - Gas Turbine Plants
- Thermodynamics, operating parameters, and start systems
- Lubrication, fuel, and drive systems
- Instrumentation and controls; maintenance, inspection, troubleshooting
- Heat-recovery side: auxiliary boilers, feedwater, condensate, and recovery systems
- Casualty control
Key Takeaway
Notice the overlap: steam generators, auxiliary boilers, water chemistry, and casualty control reappear across Q513, Q514, and Q515. Mastering boiler and feedwater fundamentals once pays off in all three modules, so build that foundation early.
Q516 and Q517: Safety, Environment, and Electrical/Control
Q516 - Engineering Safety & Environmental Protection
This module combines emergency response with regulatory compliance, both central to a Chief Engineer's legal responsibilities.
- Fire theory, fire prevention, and fire fighting
- Flooding and dewatering; stability and trim; damage control
- Emergency equipment and lifesaving appliances; general safety
- Hazardous materials
- Pollution prevention, U.S. rules and regulations, and environmental protection
Q517 - Electrical, Electronic, & Control Engineering
Modern engine rooms are heavily electrified and networked, and this module reflects that.
- Motor controllers and electric propulsion systems
- Distribution systems and high voltage systems
- Electronic systems, computers and networks
- Bridge navigation equipment interfaces
- Safety, casualty control, and troubleshooting
Q517 is where candidates from older steam backgrounds often feel the gap, and where candidates from newer electric-drive or integrated-automation backgrounds have an edge. Be honest about where you sit on that spectrum when you read our CEU difficulty guide.
Why Your Propulsion Applicability Changes Your Exam
Chief Engineer (Unlimited) endorsements are issued with propulsion plant applicability, meaning the types of plants you are qualified to operate. The NMC's current module matrix for 1AE01 is the authority on what is assigned. Because of that, this cheat sheet deliberately does not give you:
- A universal question count
- A universal time allotment
- Percentage weights per module
None of these are published as fixed universals, and inventing them would hurt your preparation. Before you build a study plan, check your assigned modules and any chief-level checklist requirements with the NMC. The official sources are the module matrix page for 1AE01 First Assistant Engineer Unlimited (Q511-Q517) and the NMC chief checklist form. If you are curious about scoring, our CEU passing score article explains what is and is not publicly stated, and the CEU pass rate article explains why a single clean figure is hard to find.
Regulatory Anchors to Memorize
| Source | What It Settles |
|---|---|
| 46 CFR 11.903 | Requirements for the Chief Engineer-Unlimited endorsement; paragraph (c)(6) covers progression from First Assistant Engineer with prior management-level examination |
| USCG NMC Deck and Engineering Examination Guide (MCP-MA-NMC2-08(01)), section 3.1.1, p. 41 | Original-applicant route (military service or foreign endorsement) takes 1AE01 modules Q511-Q517 |
| NMC 1AE01 module matrix page | Current module list for the management-level engineering exam |
| NMC chief checklist form | Application documentation expectations for the Chief endorsement |
A Module-Sequenced Review Plan
The one place generic scheduling advice earns its keep is deciding which module goes in which week, based on how the modules reinforce each other. This sequence assumes the full Q511-Q517 set; drop the plant modules you were not assigned.
Q511 foundation systems
- Prints, tables, hydraulics, steering, bilge and oily water separators
- Lubrication, cooling, and automation basics that recur everywhere else
Q513 and Q514 plants
- Boiler, feedwater, and water chemistry first, since they feed three modules
- Then turbines (steam) and fuel injection and air charging (motor)
Q515 and Q517
- Gas turbine operation and heat recovery
- High voltage, motor controllers, networks, and troubleshooting logic
Q512 and Q516 management and compliance
- Crisis management, shipyard and survey planning, conventions
- Damage control, stability and trim, pollution prevention rules
Management and regulation topics go last because they are easier to absorb once the technical systems are fresh in your mind. For the broader planning framework, see the CEU study guide, and when you are ready to test yourself, use the CEU practice questions by module.
Quick Answers
No. Those modules apply to the original-applicant route based on military service or foreign endorsement experience. A First Assistant Engineer with a prior management-level examination progressing to Chief requires no further examination under 46 CFR 11.903(c)(6).
The NMC does not publish percentage-weighted domains for these modules. Any specific weighting you see quoted elsewhere is not an official figure, so use the topic lists as your guide instead.
There is no universal figure. Assigned examinations depend on your route and the propulsion plant applicability you request, so confirm your specific assignment with the National Maritime Center.
Boiler, feedwater, water chemistry, and casualty control topics recur across the steam, motor, and gas turbine modules. Learn those early and they reinforce three modules at once.
See the CEU salary guide, the CEU jobs overview, and whether the CEU certification is worth it for qualitative career and return-on-investment context.