- What This NM2N Credential Actually Is
- The Five-Module Near Coastal Route
- What Each Module Covers
- Why Your Module Set May Differ From the Full Route
- What Not to Add to Your Plan
- Sequencing the Modules in Your Prep
- Who Hires Near Coastal Credential Holders
- Approval to Test and the NMC Process
- Frequently Asked Questions
- NM2N here means National Master 200 NC, governed by the U.S. Coast Guard National Maritime Center.
- The full Near Coastal route has five modules: Q100, Q150, Q151, Q152 and Q153.
- Q154 Navigation Problems: Oceans belongs to the Oceans option and is not part of Near Coastal.
- Your approval to test from the NMC, not a generic list, determines which modules you actually sit.
What This NM2N Credential Actually Is
The acronym NM2N is shared by several unrelated credentials, so precision matters from the first paragraph. On this site, NM2N refers to National Master 200 NC: a U.S. Coast Guard mariner credential governed by the National Maritime Center (NMC). The "NC" stands for Near Coastal, the route designation under the ONC05 examination scope for Oceans or Near Coastal endorsements, and the credential is aimed at masters of vessels up to 200 gross register tons.
If you landed here looking for something else that abbreviates to NM2N, this is not that page. Everything below concerns the Coast Guard examination modules for the Near Coastal route. For background on the name itself, see What Is NM2N? and What Does NM2N Stand For?.
The Five-Module Near Coastal Route
The NMC publishes the examination structure for the Near Coastal route openly. The full route consists of exactly five modules, each identified by a Q-code:
| Module | Published Title | Role in the Route |
|---|---|---|
| Q100 | Rules of the Road: Inland and International | Collision regulations and navigation rules |
| Q150 | Deck General | Seamanship and vessel operations fundamentals |
| Q151 | Deck Safety | Safety, emergency and survival topics |
| Q152 | Navigation General: Oceans or Near Coastal | Navigation theory applied to the Near Coastal route |
| Q153 | Navigation Problems: Chart Plot | Applied chart plotting problems |
The published guide references this under section 2.1.1.3, printed page 17. One important caveat: that guide reflects regulations effective March 24, 2014. It is not a newly issued 2026 blueprint, though current indexed NMC matrices corroborate the same module headings. For a deeper walk through how these areas fit together, the NM2N Exam Domains guide covers the content areas in detail.
What Each Module Covers
The NMC does not publish percentage weights for these modules, and this article will not invent any. Treat the five groups as unweighted, route-aware preparation categories and give each the attention its content demands.
Domain 1: Rules of the Road: Inland and International (Q100)
This module addresses the collision regulations that govern how vessels interact on the water. Because the Near Coastal route operates across the boundary between inland and international waters, candidates need to know both rule sets and be able to tell which one applies where.
- Distinguishing Inland and International rule applicability by location
- Lights, shapes and sound signals for vessels in various situations
- Right-of-way and responsibility between vessels in meeting, crossing and overtaking situations
- Conduct in restricted visibility
Domain 2: Deck General (Q150)
Deck General is the seamanship and vessel-operations module. It rewards practical, hands-on familiarity with how a vessel is run and maintained.
- Vessel construction, stability and general operating knowledge
- Mooring, anchoring and cargo-related fundamentals
- Deck equipment, rigging and routine operations
- Responsibilities of the person in charge of a vessel
Domain 3: Deck Safety (Q151)
Deck Safety concentrates on keeping people and vessels safe: emergency procedures, lifesaving and firefighting equipment, and the regulatory expectations around them.
- Firefighting and damage-control concepts
- Lifesaving appliances and abandon-ship procedures
- Man-overboard and emergency response
- Safety management and drills
Domain 4: Navigation General: Oceans or Near Coastal (Q152)
The official title of Q152 spans both Oceans and Near Coastal. For this credential, apply it to the Near Coastal route; do not treat it as a second, separate navigation-general module stacked on top of itself.
- Navigation theory, charts, publications and aids to navigation
- Tides, currents, weather and their effect on passage planning
- Electronic navigation concepts and their limits
- Voyage planning for coastal and near-coastal operations
Domain 5: Navigation Problems: Chart Plot (Q153)
Q153 is specifically Chart Plot. It is a hands-on problem-solving module and is not a generic stand-in for every kind of navigation problem. Expect to work with plotting tools and show your work on a chart.
- Plotting courses, bearings and fixes accurately
- Applying set, drift and variation/deviation corrections
- Working time, speed and distance relationships
- Determining positions from multiple lines of position
If you want a sense of how demanding these areas feel in practice, How Hard Is the NM2N Exam? looks at the difficulty profile, and the NM2N cheat sheet offers a compact review once you have built your foundation.
Why Your Module Set May Differ From the Full Route
The five-module list describes the full original Near Coastal route. It is not a universal count of examinations for every applicant. The NMC assesses each mariner's existing credentials and sea service, then assigns the specific modules that individual must take.
Several situations produce reduced module sets:
- Increases in scope or grade. A mariner moving from a Great Lakes/Inland credential to Near Coastal may be assigned only Q150 and Q152, plus Q100 if a COLREGS limitation applies. That is a reduced set, not the full five.
- Raise of grade. A mariner moving from Master Near Coastal under 100 GRT to Near Coastal under 200 GRT may be assigned Q156 rather than a full-route exam.
- Route extensions. These follow the same logic: they carry their own reduced module sets rather than re-testing every domain.
Eligibility, sea-service and documentation prerequisites are separate from the modules themselves and are covered in NM2N Requirements.
What Not to Add to Your Plan
One of the most common prep mistakes is over-scoping: stacking modules that do not belong to your route. For Near Coastal, keep these boundaries clear:
- Do not add Q154. Navigation Problems: Oceans belongs to the Oceans option. It is not part of the Near Coastal route.
- Do not double-count navigation modules. Alternative Rules or Navigation General modules are never simultaneous requirements. Q152 applied to Near Coastal is one module, not two.
- Do not treat Q153 as all navigation problems. It is the Chart Plot module specifically.
- Do not count upgrade modules as extra domains. Raise-of-grade and route-extension sets are reduced assignments, not additions to the original five.
Trimming your study plan to the modules the NMC actually assigns saves meaningful time. It also keeps you from drilling Oceans-only material that will never appear on your Near Coastal assignment. The NM2N Study Guide goes deeper on structuring your preparation around the right scope.
Sequencing the Modules in Your Prep
Generic study advice is plentiful; what helps here is ordering the five modules by how they depend on one another. Rules of the Road underpins both navigation modules, and Chart Plot is the most skill-intensive, so it benefits from the longest runway.
Rules of the Road (Q100)
- Learn lights, shapes and signals first, since they recur everywhere
- Separate Inland from International applicability early
Deck General and Deck Safety (Q150, Q151)
- Pair these because they share seamanship and emergency vocabulary
- Tie safety equipment back to operational context
Navigation General (Q152)
- Build chart, tide, current and weather fluency
- Frame everything for coastal and near-coastal voyages
Chart Plot (Q153) and Review
- Practice plotting repeatedly with real tools
- Revisit Q100 and Q152 concepts that feed the plots
Adjust the timeline to your assigned modules. If your approval lists only Q150 and Q152, compress accordingly. You can pressure-test your readiness on the NM2N practice test site, and for timing around your testing appointment see NM2N Exam Dates.
Key Takeaway
Chart Plot (Q153) is a skill, not a memorization task. Schedule it last but give it the most repetitions, and keep the Rules of the Road and Navigation General concepts fresh so your plots rest on solid fundamentals.
Who Hires Near Coastal Credential Holders
A Master of vessels up to 200 GRT on the Near Coastal route is qualified for operations beyond the Inland boundary line but not on unlimited ocean routes. That scope maps onto a recognizable set of employers and vessel types:
- Charter and passenger operators working coastal waters
- Towing and barge companies running coastwise routes
- Offshore support and supply operators serving nearby platforms
- Research, survey and workboat operators
- Commercial fishing and aquaculture support operations
- Pilot boat and harbor services operating near the coast
The 200 GRT ceiling and Near Coastal route define the credential's practical range. For more on the career side, see NM2N Jobs, and for a financial lens, Is the NM2N Certification Worth It? works through the return on investment qualitatively rather than quoting unsupported figures.
Approval to Test and the NMC Process
The NMC controls the credentialing pipeline. Your application is evaluated, your sea service and prior credentials are reviewed, and an approval to test is issued specifying the modules you must pass. That document governs your examination path.
A few practical points follow from the published structure:
- Verify your module list against the approval to test before building any study plan.
- Treat the published matrices as your syllabus. The NMC publicly posts module headings and topic matrices; they are not an unpublished scope.
- Do not rely on sample or leaked questions. Prepare from the topic matrices and underlying regulations and seamanship references, not reproduced items.
- Confirm current fees and logistics directly with the NMC. No fee schedule, overall question count, duration or population pass rate is established in the material this article draws on, so none are stated here. For pricing context, see NM2N Certification Cost.
For readers still orienting themselves around terminology, What Is NM2N Certification? and NM2N Meaning provide additional context, and NM2N Training covers instruction options. The main practice test is where you can put your module knowledge to work.
Frequently Asked Questions
The full original route has five: Q100, Q150, Q151, Q152 and Q153. Your own assignment may be smaller if you are upgrading, raising grade or extending a route, so follow your NMC approval to test.
No. Q154, Navigation Problems: Oceans, belongs to the Oceans option. It should not be added to a Near Coastal study plan.
No. Q152's official title spans Oceans or Near Coastal, but for this credential it is a single module applied to the Near Coastal route. Navigation General modules are never counted together as simultaneous requirements.
The published material does not establish percentage weights, a single overall question count or a single overall duration, so this article does not state any. Treat the five groups as unweighted and prepare for each.
Q156 is associated with a raise of grade from Master Near Coastal under 100 GRT to Near Coastal under 200 GRT. It is a reduced upgrade module, not an additional domain on the full original exam. Details on scoring thresholds, if you need them, are discussed in NM2N Passing Score and NM2N Pass Rate.