Master 500/1600 Ton Practice Test: Great Lakes & Inland

Command of ferries, dinner ships and workboats up to 1600 tons on bays, sounds and the Great Lakes. Coast Guard exam code GLI03.

282 real questions from the Coast Guard National Maritime Center's public sample exams, free. Rules of the Road needs 90%. Every other module needs 70%.

Passing score: Coast Guard pass marks module by module, and the retest rules

What's free: daily rounds, the Brig, the drills and the Pass Meter, for every license. Your first module test is free too. After that, the full Exam Room is $19, once. No subscription.

What's on the test

The Q323 Chart Plot (chart 13205 TR) module is done on a paper chart at the exam, so it isn't here. Practice it with the chart and tools.

10 sample questions

1. For the purpose of the Inland Navigation Rules, the term "Inland Waters" includes which of the following?

   • A.The coastline of the United States out to one mile offshore
   • B.The Great Lakes on the United States side of the boundary
   • C.The waters surrounding any islands of the U.S.
   • D.Any lakes within state boundaries
   Show answer

   B. The Great Lakes on the United States side of the boundary

   Q100, Rules of the Road: International & Inland

2. As a general rule, how will your vessel lie when it is drifting in a locale where there is no current?

   • A.The stern to the wind
   • B.With the wind on the quarter
   • C.The bow to the wind
   • D.The beam to the wind
   Show answer

   D. The beam to the wind

   Q160, Deck General

3. You are approaching a disabled vessel in order to remove survivors from it. If your vessel drifts faster than the disabled vessel, how should you make your approach?

   • A.Directly astern of the disabled vessel
   • B.At three times the drifting speed of the disabled vessel
   • C.To windward of the disabled vessel
   • D.To leeward of the disabled vessel
   Show answer

   C. To windward of the disabled vessel

   Q161, Deck Safety

4. A List of Lights entry (L Fl) is a single flashing light which shows a long flash of not less than which duration?

   • A.1.0 second duration
   • B.1.5 seconds duration
   • C.2.0 seconds duration
   • D.3.0 seconds duration
   Show answer

   C. 2.0 seconds duration

   Q171, Navigation General: Near Coastal

5. If your propeller is racing in rough weather, which action should you take?

   • A.Ignore it, this is acceptable in rough weather
   • B.Decrease your engine speed
   • C.Stop your engine until the rough weather passes
   • D.Increase your engine speed
   Show answer

   B. Decrease your engine speed

   Q160, Deck General

6. A law enforcement vessel patrolling a marine regatta may exhibit a flashing blue light or which of the following alternates?

   • A.two amber lights in a horizontal line
   • B.a fixed green light over a red flashing light
   • C.a high intensity flashing white light (strobe)
   • D.an alternately flashing red and yellow light
   Show answer

   D. an alternately flashing red and yellow light

   Q100, Rules of the Road: International & Inland

7. In fog you observe your radar and determine that risk of collision exists with a vessel which is 2 miles off your port bow. Which action should you take?

   • A.Take avoiding action as soon as possible
   • B.Sound five short and rapid blasts at two-minute intervals
   • C.Hold course and speed until the other vessel is sighted
   • D.Stop your engines
   Show answer

   A. Take avoiding action as soon as possible

   Q100, Rules of the Road: International & Inland

8. When passing a moored vessel in a narrow channel which actions will help minimize wake damage?

   • A.Stay on outside of channel and make a notation in the log book
   • B.Reduce speed and make a notation in the bell book
   • C.Check the rudder several times while passing the vessel
   • D.Go half astern when abeam of the moored vessel
   Show answer

   B. Reduce speed and make a notation in the bell book

   Q160, Deck General

9. You are on a ship that has broken down and are preparing to be taken in tow. You will use your anchor cable as part of the towline. Which statement is TRUE?

   • A.The strain of the tow is taken by the riding pawl, chain stopper, and anchor windlass brake.
   • B.The anchor cable should be led out through a chock, if possible, to avoid a sharp nip at the hawsepipe lip.
   • C.The anchor cable should be veered enough to allow the towline connection to be just forward of your bow.
   • D.The anchor cable should be veered enough to allow the towline connection to be immediately astern of the towing vessel.
   Show answer

   A. The strain of the tow is taken by the riding pawl, chain stopper, and anchor windlass brake.

   Q161, Deck Safety

10. A rotary current sets through all directions of the compass. How much time does it take to complete one of these cycles, in a locale off the East coast of the U.S.?

    • A.2 1/2 hours
    • B.3 1/2 hours
    • C.6 1/4 hours
    • D.12 1/2 hours
    Show answer

    D. 12 1/2 hours

    Q171, Navigation General: Near Coastal

What the study guide does

• Short daily rounds of 10 questions, with a streak.
• Practice tests built like the real one, scored with the real pass marks (first one free, then $19 once for the full Exam Room).
• The Brig: questions you miss come back until you get them right twice.
• Pass Meter: your chance of passing every module if you sat it today, worked out from your own answers.
• Lights, shapes and sound signal drills (Rules 21-35).