NM2GI Salary Guide 2026: Complete Earnings Analysis

What the National Master 200 GL and Inland Credential Actually Is

Before talking about money, it helps to be precise about what you would be earning it with. National Master 200 GL and Inland (NM2GI) refers to the Coast Guard's Master or Mate credential for vessels of less than 200 gross register tons operating on Great Lakes and Inland waters. The governing body is the United States Coast Guard National Maritime Center (NMC), and the published examination scope is designated GLI05.

This is a licensing endorsement, not a vendor certification. That distinction matters for any earnings discussion: your pay does not come from a credential holding a market price on its own. It comes from what the license legally allows you to do, namely serve as Master or Mate on qualifying vessels, and from the employer, vessel, and run you are hired onto. If you are still orienting yourself, our explainer What Is NM2GI? covers the basics, and NM2GI Requirements 2026: Eligibility, Prerequisites & How to Qualify walks through who can apply.

What We Can and Cannot Say About Pay

Most salary articles pad themselves with confident-sounding averages. We are not going to do that here, because the source material for this endorsement does not establish a universal wage, and inventing one would mislead you. The NMC publishes examination modules and topic matrices; it does not publish wage data for license holders. Any single "average NM2GI salary" you see quoted online should be treated with suspicion unless it names its source, its sample, and its vessel category.

What we can do is lay out the factors that genuinely move a mariner's compensation and show you how this endorsement fits into them. That gives you a framework you can apply to real job postings in your region, which is far more useful than a headline figure.

The Real Drivers Behind Mariner Earnings

Position and authority

The endorsement qualifies you for both Master and Mate roles under 200 GRT. In general, the person holding command responsibility is compensated differently from the person standing watch under that command. Moving from mate to master on the same vessel typically changes the pay structure, though by how much depends entirely on the employer.

Vessel type and operation

Under-200-GRT vessels cover a wide range of operations on the Great Lakes and inland waterways, including small passenger vessels, excursion and charter boats, workboats, and towing operations. Each has its own pay culture. Year-round commercial operations tend to differ from seasonal tourist work, and pay schedules (day rates versus salaried positions, for example) vary by company.

Geography and season

Great Lakes operations are shaped by weather and ice, which often means a defined operating season. Inland river and coastal-adjacent operations may run longer. A candidate weighing job offers should ask directly about guaranteed days, off-season arrangements, and whether pay continues outside peak months.

Experience and demonstrated competence

Sea service, familiarity with a particular run, and a clean record all influence what an employer will offer. The license opens the door; track record sets the terms once you are inside.

Who Hires Master and Mate Under 200 GRT

Employers who staff vessels in this category are generally operators of smaller commercial craft on the Great Lakes and inland waters. Think in categories rather than specific payroll figures:

• Small passenger and excursion operators: sightseeing, dinner cruise, and ferry-style operations that need licensed masters and mates.
• Charter and tour boat companies: seasonal businesses where a licensed captain is a regulatory requirement.
• Towing and workboat operators: companies running smaller tugs and utility vessels.
• Marinas, municipalities, and port-related services: operators of small licensed vessels for transport and support work.

For a closer look at the hiring side, see NM2GI Jobs. When you read postings, check the stated tonnage limit and waters of operation against the scope of what you hold. A posting that requires an ocean or near-coastal endorsement is a different credential entirely, so confirm the route language before you apply.

The Exam Path You Must Clear Before Earning Anything

Salary only becomes relevant once you hold the endorsement, and the examination is the gate. The published full-route structure for National Master 200 GL and Inland has five module groups. Here is how the two route variants compare:

Three further modules appear in the published materials but are not part of a standard Master-original path: Q345 (Navigation and Deck General/Safety) is a separate raise-of-grade module for moving from Master under 100 to Master/Mate under 200, and Q346 is a separate route for an OUPV moving to Mate under 200. These are upgrade routes, not extra domains for a first-time full-route candidate. For a deeper map of how the content areas fit together, read NM2GI Exam Domains 2026: Complete Guide to All 5 Content Areas.

Module-by-Module: What You Must Master

The NMC publishes its modules and topic matrices, and we organize them here as unweighted, route-aware preparation groups. We make no claim about percentage weighting or per-module question counts, because the published materials reviewed do not establish them. What follows is a practical orientation to each group.

Because Q343 is a plotting exercise rather than pure recall, it rewards repetition with actual chart tools. If you want a sense of how demanding the whole set is, see How Hard Is the NM2GI Exam? Complete Difficulty Guide 2026.

Great Lakes and Inland vs. Inland: Why the Route Matters

The two route variants share four of their five groups. The only swap is in Rules of the Road. A candidate pursuing the Great Lakes and Inland endorsement sits Q100, while an Inland candidate may sit Q100 or Q300 depending on whether the applicable COLREGS limitation is accepted. That choice can shape both your study load and the waters you are authorized to operate on.

If your career plan involves working on the Great Lakes specifically, an endorsement that covers them is the obvious fit. If your work will stay on inland rivers and similar waters, the Inland route may suffice. That is a scoping decision with real earning consequences, because it determines which jobs you are legally eligible for.

Weighing the Investment Against the Return

Because we cannot responsibly quote a salary, the most honest way to evaluate return is to compare costs and opportunities you can verify yourself. Current examination fees are not established by the materials this article draws on, so check the NMC directly for the up-to-date fee picture, and see NM2GI Certification Cost 2026: Complete Pricing Breakdown for how to think through the cost side.

A practical return analysis for your situation looks like this:

1. Identify target jobs. Pull several real postings in your region that require Master or Mate under 200 GRT on Great Lakes or Inland waters.
2. Record the stated pay structure. Note whether it is salaried, day-rate, seasonal, or per-trip, and any guaranteed time.
3. Add up total preparation cost. Include exam-related fees, study materials, and the time you will spend away from other work.
4. Compare against your current earnings. Only your own numbers can tell you whether the endorsement pays for itself.

For a structured version of this thinking, Is the NM2GI Certification Worth It? Complete ROI Analysis 2026 goes deeper, and you can always revisit our core NM2GI Salary Guide 2026: Complete Earnings Analysis framework as new data becomes available.

A Preparation Sequence Tied to the Modules

Rather than a generic schedule, sequence your study around how these specific modules build on each other. Rules of the Road underpins almost everything on the water, so it goes first. Chart plotting is skill-based and needs the longest runway of hands-on practice.

That is the only generic-style scheduling we recommend, and it exists purely to order the modules logically. For the full approach, our NM2GI Study Guide 2026: How to Pass on Your First Attempt expands on technique, and you can test your readiness with the practice questions on the main practice test site. When you want a quick last-minute refresher, the NM2GI Cheat Sheet 2026: One-Page Review of Must-Know Facts is built for that.

Once you have worked through the material, you can check your readiness with timed practice at NM2GI Exam Prep and keep your scheduling organized with NM2GI Exam Dates 2026: Testing Windows, Deadlines & Scheduling.

Frequently Asked Questions