Towing Vessel License Practice Test: Oceans

The same towing ticket for any ocean. Adds celestial and chronometer questions. Coast Guard exam code TV01.

216 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 Q414 Chart Plot (chart 12354 TR) and Q416 Navigation Problems (celestial) 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. While proceeding up a narrow waterway you observe a vessel berthed in the river with slack mooring lines. Which is the most prudent action to take FIRST?

   • A.Contact the moored vessel
   • B.Reduce the speed of your vessel
   • C.Give 5 short blasts on the whistle
   • D.Call the US Coast Guard
   Show answer

   B. Reduce the speed of your vessel

   Q170, Deck General / Safety

3. What is the difference between net tonnage and gross tonnage?

   • A.Net tonnage is tonnage of cargo compared to tonnage of whole ship.
   • B.There is no difference.
   • C.Net tonnage is the net weight of the ship.
   • D.Net tonnage is the gross tonnage, less certain deductions for machinery and other areas.
   Show answer

   D. Net tonnage is the gross tonnage, less certain deductions for machinery and other areas.

   Q161, Deck Safety

4. You have been informed that dredging operations may be underway in your vicinity. Which buoy indicates the dredging area?

   • A.Yellow and black vertically striped buoy
   • B.White and international orange buoy
   • C.Yellow buoy
   • D.White buoy with a green top
   Show answer

   C. Yellow buoy

   Q171, Navigation General: Near Coastal

5. 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

6. You are 15 feet off a pier and docking a vessel using only a bow breast line and stern breast line. Once the slack is out of both lines you begin to haul in on the bow breast line. What is the effect on the vessel?

   • A.The bow and stern come in equally closer toward the pier.
   • B.The bow will come in and the stern will go out.
   • C.The stern will come in and the bow will remain the same distance off the pier.
   • D.The bow will come in and the stern will remain the same distance off the pier.
   Show answer

   D. The bow will come in and the stern will remain the same distance off the pier.

   Q356, Deck General / Safety

7. Which extinguishing agent is best for use on a magnesium fire?

   • A.Water
   • B.CO2
   • C.Dry chemical
   • D.Sand
   Show answer

   D. Sand

   Q161, Deck Safety

8. On a working copy of a weather map, a cold front is represented by what color line?

   • A.Blue
   • B.Red
   • C.Purple
   • D.Alternating red and blue
   Show answer

   A. Blue

   Q412, Towing Navigation General, Near Coastal

9. A commercial vessel engaged in public safety activities may display a(n) identity light(s). Which of the following is appropriate for these activities?

   • A.alternately flashing red and yellow light
   • B.flashing yellow light
   • C.alternately flashing blue and red light
   • D.flashing blue light
   Show answer

   A. alternately flashing red and yellow light

   Q100, Rules of the Road: International & Inland

10. Which uninspected vessel is required to carry an efficient daylight signaling lamp?

    • A.299 GT towing vessel on a coastwise voyage
    • B.99 GT towing vessel on Inland Waters
    • C.199 GT towing vessel on a coastwise voyage
    • D.199 GT towing vessel on an international voyage
    Show answer

    D. 199 GT towing vessel on an international voyage

    Q356, Deck General / Safety

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).