Master 100 Ton Captain's License Practice Test (Near Coastal)

The 100-ton ticket: inspected boats with more than 6 passengers. Coast Guard exam code ONC06.

141 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

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. Which of the following is a rope ladder with wooden rungs?

   • A.A life ladder
   • B.A Jacob's ladder
   • C.A jury ladder
   • D.A drop ladder
   Show answer

   B. A Jacob's ladder

   Q160, Deck General

3. The water in which a vessel floats provides vertical upward support. Which term is regarded as the point through which this support is assumed to act?

   • A.The center of gravity
   • B.The center of effort
   • C.The center of buoyancy
   • D.The center of flotation
   Show answer

   C. The center of buoyancy

   Q161, Deck Safety

4. 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

5. What should you inspect to be sure that it is safe to go aloft in a bosun's chair?

   • A.The tail block
   • B.The gantline
   • C.The chair and bridle
   • D.All of the above
   Show answer

   D. All of the above

   Q160, Deck General

6. Deballasting a double bottom has what effect on KG?

   • A.KG is increased.
   • B.KG is not affected.
   • C.KG is decreased.
   • D.KG increases at light drafts and decreases at deep drafts.
   Show answer

   A. KG is increased.

   Q161, Deck Safety

7. 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

8. Using a safety factor of five, determine what is the safe working load for 3-1/2 inch manila line with a breaking stress of 4.9 tons.

   • A.0.82 ton
   • B.0.98 ton
   • C.2.45 tons
   • D.12.25 tons
   Show answer

   B. 0.98 ton

   Q160, Deck General

9. A quick and rapid motion of a vessel in a seaway is an indication of a(n) __________.

   • A.excessive free surface
   • B.small GZ
   • C.high center of gravity
   • D.large GM
   Show answer

   D. large GM

   Q161, Deck Safety

10. What is a "vessel restricted in her ability to maneuver"?

    • A.A large tanker that is being towed as a dead ship to dry dock
    • B.A deep-draft vessel that can only navigate in a dredged channel
    • C.A vessel fishing with a bottom trawl that must remain on course
    • D.A vessel laying revetment mats to provide bank protection along a channel
    Show answer

    D. A vessel laying revetment mats to provide bank protection along a channel

    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).