Master 100 Ton Rivers License Practice Test

The river captain ticket for small passenger boats: sightseeing boats, water taxis and charters on rivers and canals. Coast Guard exam code RVR05.

143 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 Q403 Chart Plot (Mississippi River) 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. Your vessel is proceeding through a narrow channel. What actions can you take to avoid any sudden sheers of the vessel?

   • A.Reduce speed and stay to the outer limits of the channel
   • B.Increase speed and stay to the outer limits of the channel
   • C.Reduce speed and stay in the deepest part of the channel
   • D.Put your offshore anchor well in the water
   Show answer

   C. Reduce speed and stay in the deepest part of the channel

   Q160, Deck General

3. Fog generally clears when the __________.

   • A.temperature increases
   • B.wind speed increases
   • C.wind direction changes
   • D.All of the above
   Show answer

   D. All of the above

   Q171, Navigation General: Near Coastal

4. 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

5. When piloting a vessel, how are visual references used to establish a constant rate of turn?

   • A.Visual references cannot be used to maintain a constant rate of turn.
   • B.Begin the turn when the fixed object is on the beam.
   • C.Fixed objects that stay on the same relative bearing when the ship is turning indicate a constant rate of turn.
   • D.Keep the fixed object's relative bearing opening, for a constant rate of turn.
   Show answer

   C. Fixed objects that stay on the same relative bearing when the ship is turning indicate a constant rate of turn.

   Q160, Deck General

6. Which describes the visible range marked on charts for lights?

   • A.The maximum distance the light may be seen restricted by the height of the light and the curvature of the earth
   • B.The minimum distance at which the light may be seen based on a 12 mile distance to visible horizon
   • C.The maximum distance at which a light may be seen in clear weather with 10 miles visibility
   • D.The minimum distance at which the light may be seen with infinite visibility
   Show answer

   C. The maximum distance at which a light may be seen in clear weather with 10 miles visibility

   Q349, Navigation General

7. Which is TRUE for a vessel using a traffic separation scheme?

   • A.only anchor in the separation zone
   • B.avoid anchoring in areas near the termination of the scheme
   • C.use the separation zone for navigating through the scheme if she is hindering other traffic due to her slower speed
   • D.avoid crossing traffic lanes, but if obliged to do so, shall cross on as small an angle as is practical
   Show answer

   B. avoid anchoring in areas near the termination of the scheme

   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. Where are buoys and day beacons exhibiting a yellow triangle or square painted on them used?

   • A.On isolated stretches of the ICW to mark un-dredged areas
   • B.In minor harbors where the controlling depth is 10 feet (3 meters) or less
   • C.Locations where the ICW and other waterways coincide
   • D.Only at particularly hazardous turns of the channel
   Show answer

   C. Locations where the ICW and other waterways coincide

   Q349, Navigation General

10. A power-driven vessel shows the same lights as which vessel?

    • A.a vessel engaged in towing, when not underway
    • B.a vessel towing astern
    • C.a sailing vessel
    • D.a pushing vessel and a vessel being pushed, when they are rigidly connected in a composite unit
    Show answer

    D. a pushing vessel and a vessel being pushed, when they are rigidly connected in a composite unit

    Q100, Rules of the Road: International & Inland

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).