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100+ Free USCG Master/Mate GLI 200 Practice Questions

Prepare for the USCG Master or Mate Great Lakes and Inland of Less Than 200 GRT exam with instant access — no signup required.

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2026 Statistics

Key Facts: USCG Master/Mate GLI 200 Exam

GLI05

NMC Exam Code

NMC Examinations

50

Questions per Core Deck/Nav Module

USCG Deck Guide Q340–Q342

90%

Rules of the Road Pass Score

USCG Deck Guide

70%

Deck/Nav Module Pass Score

USCG Deck Guide

$95

Exam Fee (Lower Level)

46 CFR 10.219

$240

Typical Original Total Fee

Evaluation + exam + issuance

GLI05 Master or Mate Great Lakes and Inland less than 200 GRT is modular. Core modules include Rules of the Road (50 at 90%) and Q340–Q342 Deck General, Deck Safety, and Navigation General GLI (50 each at 70%), plus additional Q343–Q346 modules per NMC. Lower-level original fees are about $100+$95+$45 under 46 CFR 10.219. This free bank is an English MCQ study aid focused on the assessable knowledge of the GLI05 path.

Sample USCG Master/Mate GLI 200 Practice Questions

Try these sample questions to test your USCG Master/Mate GLI 200 exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Under Rule 5 of the Inland Navigation Rules, a proper lookout must be maintained by:
A.Sight and hearing as well as by all available means appropriate to the circumstances
B.Radar alone whenever electronic equipment is operating
C.The licensed master only, without assistance from the deck crew
D.Monitoring AIS and VHF from the chart table only
Explanation: Rule 5 requires every vessel to maintain a proper lookout by sight and hearing and by all available means appropriate in the prevailing circumstances and conditions. On a Great Lakes/Inland vessel under 200 GRT, that typically includes visual watch, sound, radar, and AIS as available.
2Under the Inland Rules, risk of collision is generally deemed to exist when:
A.The compass bearing of an approaching vessel does not appreciably change
B.Another vessel is more than 12 miles away on radar
C.You are overtaking and will pass more than one mile clear
D.You hear a fog signal abaft the beam only
Explanation: Rule 7 provides that risk of collision shall be deemed to exist if the compass bearing of an approaching vessel does not appreciably change. Steady bearing with decreasing range is a classic collision risk indicator.
3In a meeting situation under the Inland Rules when power-driven vessels are in sight of one another, one short blast means:
A.I intend to leave you on my port side
B.I intend to leave you on my starboard side
C.I am operating astern propulsion
D.I am altering course to port
Explanation: Under Inland Rule 34, one short blast means 'I intend to leave you on my port side' (port-to-port meeting/passing). This is an intent signal under Inland Rules, not merely a course-change announcement as under COLREGS.
4Under Inland Rules, two short blasts from a power-driven vessel in a meeting or crossing situation generally means:
A.I intend to leave you on my starboard side
B.I intend to leave you on my port side
C.Danger; I do not understand your intentions
D.I am backing down
Explanation: Inland Rule 34: two short blasts means 'I intend to leave you on my starboard side' (starboard-to-starboard pass when appropriate).
5The danger or doubt signal under the Inland Rules is:
A.At least five short and rapid blasts
B.One prolonged blast
C.Three short blasts
D.Two prolonged blasts followed by one short
Explanation: Inland Rule 34 provides that when vessels in sight of one another are approaching and either fails to understand the intentions or actions of the other, or is in doubt that sufficient action is being taken, the vessel in doubt shall immediately indicate such doubt by giving at least five short and rapid blasts.
6A power-driven vessel underway in restricted visibility must sound which signal at intervals of not more than two minutes?
A.One prolonged blast
B.Two prolonged blasts
C.One short, one prolonged, and one short blast
D.Rapid ringing of the bell for about five seconds
Explanation: Under Rule 35, a power-driven vessel making way through the water in restricted visibility sounds one prolonged blast at intervals of not more than two minutes.
7In a narrow channel or fairway, a vessel shall keep as near as is safe and practicable to the:
A.Outer limit of the channel or fairway which lies on her starboard side
B.Centerline of the channel at all times
C.Outer limit of the channel which lies on her port side
D.Deepest water regardless of traffic flow
Explanation: Rule 9 requires a vessel proceeding along a narrow channel or fairway to keep as near to the outer limit of the channel or fairway which lies on her starboard side as is safe and practicable. This is especially important on inland rivers and Great Lakes approaches.
8When overtaking under the Inland Rules in a narrow channel, the vessel intending to overtake on the overtaken vessel's starboard side sounds:
A.One short blast
B.Two short blasts
C.Two prolonged blasts followed by one short blast
D.Five or more short and rapid blasts
Explanation: Under Inland Rule 34, a vessel intending to overtake another on the other vessel's starboard side sounds one short blast; the overtaken vessel, if in agreement, answers with the same signal.
9Under Rule 13, a vessel is deemed to be overtaking when she is coming up with another vessel from a direction more than:
A.22.5 degrees abaft her beam
B.45 degrees abaft her beam
C.90 degrees abaft her beam
D.112.5 degrees abaft her beam
Explanation: Rule 13 defines an overtaking vessel as one coming up with another from a direction more than 22.5° abaft her beam—that is, in such a position that at night she would see only the sternlight and neither of the sidelights of the vessel being overtaken.
10In a crossing situation under the Inland Rules, the vessel which has the other on her own starboard side shall:
A.Keep out of the way and, if the circumstances of the case admit, avoid crossing ahead of the other vessel
B.Hold course and speed as the stand-on vessel
C.Sound five short blasts and reverse immediately
D.Alter course to port as the preferred action
Explanation: Rule 15: when two power-driven vessels are crossing so as to involve risk of collision, the vessel which has the other on her own starboard side shall keep out of the way and shall, if the circumstances of the case admit, avoid crossing ahead of the other vessel.

About the USCG Master/Mate GLI 200 Exam

The USCG Master or Mate Great Lakes and Inland of Less Than 200 GRT examination (NMC exam code GLI05) is the national deck knowledge path for limited 200 GRT officer service on Great Lakes and inland waters. Core modules include Rules of the Road, Deck General (Q340), Deck Safety (Q341), and Navigation General Great Lakes and Inland (Q342), with additional modules in the Q343–Q346 range as assigned by NMC for the Master or Mate path.

Assessment

GLI05: Q100 and/or Q300 Rules of the Road (50, 90%); Q340 Deck General (50, 70%); Q341 Deck Safety (50, 70%); Q342 Navigation General Great Lakes and Inland (50, 70%); plus additional modules in the Q343–Q346 range per NMC Great Lakes and Inland listings for chart plot / combined navigation and deck topics as assigned to the Master or Mate less than 200 GRT path.

Time Limit

Up to 3.5 hours per module; minimum two modules per day, all modules completed on consecutive days within the same business week

Passing Score

70% most modules; 90% Rules of the Road, and 90% on any chart-plot module assigned to the path requested

Exam Fee

$95 examination fee; ~$240 typical original lower-level total ($100 evaluation + $95 exam + $45 issuance) (U.S. Coast Guard National Maritime Center (NMC) / Regional Exam Centers)

USCG Master/Mate GLI 200 Exam Content Outline

~25%

Rules of the Road

Collision regulations for inland/GL 200 GRT officers.

~25%

Deck General

Seamanship and watchkeeping.

~25%

Deck Safety

Safety equipment and emergencies.

~25%

Navigation General

Great Lakes and inland navigation fundamentals.

How to Pass the USCG Master/Mate GLI 200 Exam

What You Need to Know

  • Passing score: 70% most modules; 90% Rules of the Road, and 90% on any chart-plot module assigned to the path requested
  • Assessment: GLI05: Q100 and/or Q300 Rules of the Road (50, 90%); Q340 Deck General (50, 70%); Q341 Deck Safety (50, 70%); Q342 Navigation General Great Lakes and Inland (50, 70%); plus additional modules in the Q343–Q346 range per NMC Great Lakes and Inland listings for chart plot / combined navigation and deck topics as assigned to the Master or Mate less than 200 GRT path.
  • Time limit: Up to 3.5 hours per module; minimum two modules per day, all modules completed on consecutive days within the same business week
  • Exam fee: $95 examination fee; ~$240 typical original lower-level total ($100 evaluation + $95 exam + $45 issuance)

Keys to Passing

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

USCG Master/Mate GLI 200 Study Tips from Top Performers

1Overprepare for Rules of the Road because those modules require 90% to pass.
2Know when Inland Rules differ from COLREGS (sound signals, lights, narrow channels, Western Rivers/Great Lakes special rules).
3Drill chart-plot routines: largest scale chart, regular fixes, set and drift, and standard plotting symbology.
4Practice speed-time-distance and course-to-steer arithmetic until automatic under time pressure.
5Study ice navigation, seiches, and Great Lakes weather if your route includes Great Lakes Topics modules.
6Take timed sets of 50–70 questions to match REC module length.
7Memorize required lights, shapes, and sound signals for power-driven vessels, towing, fishing, and restricted-visibility situations.
8Review stability, damage control, firefighting, and abandon-ship procedures for deck safety modules.
9Confirm whether your application needs Q100 (Inland and International) to avoid a COLREGS limitation.
10Study the GLI05 module list on the NMC examinations pages and take only the Rules module path that matches your COLREGS limitation choice.
11Inland routes do not take Great Lakes Topics modules; Great Lakes and Inland routes do.

Frequently Asked Questions

How many questions are on the USCG GLI05 exam?

GLI05 is modular for Master or Mate less than 200 GRT on Great Lakes and inland routes. Published modules include Rules of the Road (50), Deck General (50), Deck Safety (50), Navigation General GLI (50), and additional chart/navigation modules in the Q343–Q346 range.

What passing score do I need?

Most modules require 70%. Rules of the Road requires 90%. Chart plot requires 90% when a chart-plot module is assigned. Great Lakes Topics modules (when required) generally require 70%.

How much does the exam cost?

Under 46 CFR 10.219, a typical original lower-level officer path is about $100 evaluation, $95 examination, and $45 issuance. Medical, drug testing, and training costs are separate. Pay via Pay.gov.

Can I take the exam remotely?

No. These deck officer modules are administered in person at U.S. Coast Guard Regional Exam Centers (RECs). There is no approved remote-testing option for these endorsements.

What is the difference between Inland-only and Great Lakes and Inland Rules modules?

For Great Lakes and Inland routes, Rules of the Road is Inland and International (Q100). For Inland routes, applicants may take Inland-only Rules (Q300), but Inland-only Rules result in a geographic COLREGS limitation on the MMC unless Q100 is also completed (46 CFR 11.430).

Are open-book renewal exercises the same as the original modules?

Renewal open-book exercises (for example, master/mate unlimited or limited-tonnage renewal papers listed in the Deck Guide) are separate from original GLI05 knowledge modules. This bank focuses on original-module knowledge.

What calculator can I bring?

The NMC policy letter of December 2, 2024 superseded the earlier TI-30XIIS-only rule. At a Regional Exam Center you may use a programmable calculator with memory if all programs and memory are cleared before entry and you can demonstrate clearing with the manufacturer's instructions. If the examiner cannot confirm the device is cleared, a TI-30XIIS is provided instead. Only one calculator is allowed; other electronics including smart watches are not permitted.

Is this free practice bank an official Coast Guard exam?

No. This is an English-language multiple-choice study adaptation for exam prep. Official modules are administered by the Coast Guard at RECs and may include chart-plot and calculation items that this bank approximates with knowledge and calculation MCQs.