Command of small ships, big ferries, research and excursion vessels up to 1600 tons, out to 200 miles. Coast Guard exam code ONC03.
233 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%.
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
Module
Topic
Questions here
To pass
Q100
Rules of the Road: International & Inland
44
90%
Q120
Deck General (Master 1600 ton)
68
70%
Q121
Deck Safety (Master 1600 ton)
68
70%
Q123
Navigation General: Near Coastal (Master 1600 ton)
53
70%
Your exam also has Q122 Stability Problems: about 10 load and stability calculations worked from the Coast Guard's Stability Data Reference Book, which the exam room gives you. They aren't drilled here; practice them with that book.
The Q125 Chart Plot (chart 12221 TR) and Q126 Navigation Problems 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
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
Which action has a tendency to happen to a vessel proceeding along the bank of a river or channel with steep banks?
A.The vessel will hug the bank
B.The vessel will sheer away from the bank
C.The vessel will increase speed
D.The vessel will continue in line with the bank
Show answer
B. The vessel will sheer away from the bank
Q160, Deck General
If you have to jump in the water when abandoning ship, your legs should be in which position?
A.Your legs should be spread apart as far as possible
B.Your legs should be in a kneeling position
C.Your legs should be held as tightly against your chest as possible
D.Your legs should be extended straight down and crossed at the ankles
Show answer
D. Your legs should be extended straight down and crossed at the ankles
Q161, Deck Safety
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
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
Which statement is TRUE when an anchor is used to assist in turning the vessel in restricted waters?
A.Deploying the anchor underfoot shifts the pivot point forward
B.Turning on the anchor is to be used only with a single-screw vessel
C.Having to use the aid of an anchor is the sign of a novice shiphandler
D.This technique should only be used as a last resort
Show answer
A. Deploying the anchor underfoot shifts the pivot point forward
Q160, Deck General
If you must swim through an oil fire, which action should be avoided?
A.Swim with the wind
B.Enter the water feet first
C.Wear as much clothing as possible
D.Cover eyes with one hand when entering the water
Show answer
A. Swim with the wind
Q161, Deck Safety
Aneroid barometers are usually calibrated to indicate atmospheric pressure in which units?
A.Inches of mercury and centimeters
B.Feet of mercury and millibars
C.Inches of mercury and millibars
D.Inches of mercury and millimeters
Show answer
C. Inches of mercury and millibars
Q171, Navigation General: Near Coastal
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
What is required to be entered into the Official Logbook?
A.The annual required stripping and cleaning of the lifeboats
B.The biennial weight test of the lifeboats and falls