- What "Passing" Means for the National Master of Towing
- What Is and Is Not Published About Passing Scores
- Your Route Determines Your Modules
- Full-Route Module Sets at a Glance
- Passing Module by Module
- Upgrade and Extension Sets Are Separate
- Approval to Test and Exam Logistics
- Sequencing Your Preparation Around Module Weight of Effort
- When a Module Does Not Go Your Way
- Frequently Asked Questions
- Passing is assessed module by module, and NMC assigns your exact modules in your approval to test.
- This packet does not establish a single published percentage cutoff, so treat any claimed universal passing percentage with suspicion.
- TV01 Near Coastal uses six modules, TV01 Oceans seven, TV02 Great Lakes and Inland five, and TV03 Western Rivers five.
- Q412 and Q413 are alternatives, never simultaneous requirements; Q416 applies only to the Oceans route.
What "Passing" Means for the National Master of Towing
Most professional credentials hand you one exam, one score report and one number to beat. The National Master of Towing (OC, NC, GL-IN, WR) does not work that way. The governing body is the United States Coast Guard National Maritime Center (NMC), and the examination is delivered as a set of individual modules. Your task is to clear each module assigned to you. There is no blended grade to average out a weak area against a strong one.
That changes how you should think about "the passing score." The more useful question is: which modules am I assigned, and what does it take to clear each one? If you are still orienting yourself to the credential itself, start with What Is USCG-MOT? and then return here to work through the scoring mechanics.
What Is and Is Not Published About Passing Scores
Honesty about the evidence matters here, because passing-score pages across the internet are full of confident numbers that nobody can source. For this credential, the sources reviewed (the NMC towing vessel endorsements page, the TV03 page and the NMC published deck and engineering guide) establish module codes and topic matrices. They do not establish the following, so we will not pretend they do:
- A single overall percentage that applies to every module and every applicant
- A single overall question count or exam duration across the whole route
- Current fee schedules or a population-wide pass rate
The published guide is also worth understanding in context. It is the regulations-effective March 24, 2014 document (see guide reference 2.1.5.1 through 2.1.5.3, printed pages 33 and 34), not a newly issued 2026 blueprint. Current indexed NMC matrices corroborate the module headings, which is why the module structure below is reliable even though the guide itself predates 2026. For a deeper look at how candidates perceive the difficulty of that structure, see How Hard Is the USCG-MOT Exam? and USCG-MOT Pass Rate: What the Data Shows.
Your Route Determines Your Modules
The seven content groupings used by this site are editorial preparation groups. They preserve all 17 unique published module codes across four route options, but they are not a seven-module exam that every towing applicant sits. The number of groups is not a universal count of examinations. Your route decides what you take:
- TV01 (Oceans or Near Coastal): six modules for Near Coastal, seven for Oceans
- TV02 (Great Lakes and Inland): five modules
- TV03 (Western Rivers): five modules
One subtlety on TV03: the current page's endorsement subheading says Apprentice Mate, yet the same page's matrix title, the overall towing index and the published guide expressly cover Master, Mate and Apprentice Mate. If you see that wording and wonder whether it applies to you, rely on your NMC approval rather than a single subheading.
Full-Route Module Sets at a Glance
| Route | Module Codes | Count |
|---|---|---|
| TV01 Near Coastal | Q100, Q410, Q411, Q412, Q414, Q415 | 6 |
| TV01 Oceans | Q100, Q410, Q411, Q413, Q414, Q415, Q416 | 7 |
| TV02 Great Lakes and Inland | Q100, Q418, Q419, Q420, Q421 | 5 |
| TV03 Western Rivers | Q300, Q423, Q424, Q425, Q426 | 5 |
Notice how the Western Rivers set swaps nearly everything. It uses Inland rules (Q300) in place of the combined Inland and International rules module, and it carries its own versions of the deck, safety, navigation and chart plot modules. Do not substitute generic Oceans navigation material for Western Rivers navigation (Q425). The coursework and the exam are built around river operations. A full breakdown of the content areas lives in USCG-MOT Exam Domains: Complete Guide to All 7 Content Areas.
Passing Module by Module
Because passing is assessed per module, your preparation should map to the modules, not to one imagined global score. Here is what each preparation group covers and how to think about clearing it.
Domain 1: Rules of the Road (Q100 or Q300)
Q100 covers Inland and International rules and appears in the TV01 and TV02 sets. Western Rivers candidates take Inland rules in Q300 instead.
- Know which rule set governs the water you are on, since the two sets are not interchangeable
- Be fluent in lights, shapes, sound signals and steering and sailing rules as they apply to towing vessels
- Expect the module to reward precision with rule application rather than general familiarity
Domain 2: Deck General (Q410, Q418 or Q423)
Q410 serves OC and NC routes, Q418 serves Great Lakes and Inland, and Q423 serves Western Rivers.
- For Western Rivers, Q423 emphasizes barge operations and hazardous cargo
- Match your study material to the code on your approval, not to a generic deck syllabus
Domain 3: Deck Safety (Q411, Q419 or Q424)
Q411 serves OC and NC, Q419 serves Great Lakes and Inland, and Q424 serves Western Rivers.
- Q424 covers stability, construction and damage control for the Western Rivers route
- Treat safety as a distinct module with its own threshold, not as something you can offset with strong navigation
Domain 4: Navigation General (Q412, Q413, Q420 or Q425)
Near Coastal uses Q412, Oceans uses Q413, Great Lakes and Inland uses Q420, and Western Rivers uses Q425.
- Remember Q412 and Q413 are an either/or choice
- Q425 is the Western Rivers navigation module, not a stand-in you can replace with Oceans material
Domain 5: Navigation Problems, Chart Plot (Q414, Q421 or Q426)
Q414 serves OC and NC, Q421 serves Great Lakes and Inland, and Q426 serves Western Rivers.
- Chart plot modules are hands-on, procedure-heavy work, so practice by plotting rather than rereading
- Accuracy under time pressure is the skill being tested, which is why drilling matters here
Domains 6 and 7: Navigation Problems, Near Coastal (Q415) and Oceans (Q416)
Q415 applies to the TV01 OC and NC routes. Q416 is Oceans-only and appears only in the seven-module Oceans set.
- If you are on the Near Coastal route, Q416 is not part of your full-route exam
- Oceans candidates should budget extra time for this additional navigation problems module
Upgrade and Extension Sets Are Separate
If you already hold an endorsement and are expanding it, you may face a much smaller module set than a first-time applicant. These sets are not added to the full-route counts, and they should never be summed into them. The published extension sets are:
| Scenario | Modules |
|---|---|
| Near Coastal to Oceans | Q413 + Q416 |
| Great Lakes/Inland to Near Coastal | Q412 + Q415 |
| Great Lakes/Inland to Oceans | Q413 + Q415 + Q416 |
| Western Rivers to Great Lakes/Inland | Q100 + Q420 + Q421 |
| Adding Western Rivers to OC/NC/GL-IN | Q425 + Q426 |
| Western Rivers to OC/NC | Full exam required |
Key Takeaway
An upgrade module set is not a "domain count." If a colleague says their exam was two modules, they likely took an extension set, not a full-route exam. Compare yourself only to people on your route and your application type.
Eligibility, sea service and documentation questions sit upstream of any of this, and they are covered in USCG-MOT Requirements: Eligibility, Prerequisites and How to Qualify.
Approval to Test and Exam Logistics
NMC determines the individual's assigned modules. That assignment is reflected in your approval to test, which is the document that tells you exactly what you will sit. Do not rely on a forum post, a coworker's experience or even a study guide's generic list. Use the actual approval.
Fees and testing windows are deliberately not stated here. Current fees are not established by the sources reviewed, and they change independently of the module structure. For the cost side of your planning, read USCG-MOT Certification Cost: Complete Pricing Breakdown, and for scheduling considerations see USCG-MOT Exam Dates: Testing Windows, Deadlines and Scheduling.
Sequencing Your Preparation Around Module Weight of Effort
Since there are no published domain weightings in the sources reviewed, do not allocate study time by percentage. Instead, allocate by how much hands-on practice each module demands. Rules and general knowledge modules reward steady reading and recall. Chart plot and navigation problem modules reward repetition on actual problems. Here is one way to sequence an Oceans-route candidate, adjusted down for shorter routes:
Rules of the Road (Q100 or Q300)
- Start here because rules vocabulary supports every later module
- Keep the Inland and International distinction clear from day one
Deck General and Deck Safety
- Cover your route's codes: Q410/Q411, Q418/Q419 or Q423/Q424
- Western Rivers candidates: concentrate on barge operations, hazardous cargo, stability and damage control
Navigation General
- Study only the one module your route requires: Q412, Q413, Q420 or Q425
Chart Plot and Navigation Problems
- Plot daily, since this is a skill module and not a memorization module
- Add Q415 and, for Oceans, Q416 once your plotting is reliable
For a broader planning framework to pair with this sequencing, see the USCG-MOT Study Guide: How to Pass on Your First Attempt, and when you want a rapid refresher, the USCG-MOT Cheat Sheet is a handy one-page review. To test yourself against realistic module-style questions, try the USCG-MOT practice tests.
When a Module Does Not Go Your Way
Because each module stands alone, a shortfall in one module is a problem to fix in that module, not a verdict on your whole attempt. The practical approach is to identify which module you missed, find the topic gaps inside it using the published matrices, and rebuild those specific areas. Retake rules, waiting periods and attempt limits are set by NMC, so confirm them against current NMC guidance rather than assuming. If you want to gauge how realistic your readiness is before you sit, take a timed run through the practice question bank by module.
If you are weighing whether the effort is justified, Is the USCG-MOT Certification Worth It? and the USCG-MOT Salary Guide frame the career payoff, and USCG-MOT Jobs describes where the endorsement is put to work.
Frequently Asked Questions
The sources reviewed do not establish a single overall percentage or one combined score. The credential is delivered as individual modules assigned by NMC, so you should plan to clear each assigned module rather than chase one blended number.
It depends on your route: six for TV01 Near Coastal, seven for TV01 Oceans, five for TV02 Great Lakes and Inland, and five for TV03 Western Rivers. Your approval to test from NMC is the definitive list for your application.
No. They are alternatives. Q412 is Near Coastal navigation general and Q413 is Oceans navigation general, and they must never be counted together as simultaneous requirements.
No. Extension sets such as Q413 plus Q416 for Near Coastal to Oceans are separate from the full-route sets and should not be added into them.
Check the National Maritime Center's published examination pages and your approval to test directly. The sources reviewed for this article do not establish percentages, a single question count, a single duration, current fees or a population pass rate, so we do not state them.