Revise with instant feedback: the moment you pick an answer you see whether it was right, with the explanation where available. Untimed — ideal before you sit a mock exam. Questions you miss keep coming back until you know them.
Exam-day conditions: no feedback until you submit, each module scored separately like the real test, with a full question-by-question review at the end.
The real exam is passed module by module: Rules of the Road requires 90%, most other modules 70%. Chart-plotting modules are taken on paper and not included.
The free sample gives you 20 to 30 questions per module. The full bank contains every available official question, with written explanations on the popular small-vessel credentials, one-off $29, lifetime access on up to 3 devices, all credentials included.
You must pass each module separately. Most modules require 70% to pass.
The exam covers 1 module: Navigation and Deck General – Safety.
This page includes free sample questions drawn from the official USCG sample examinations, with a full bank of around 68 questions across all modules available with lifetime access.
Every question comes from the U.S. Coast Guard National Maritime Center's published sample examinations, which are U.S. government works in the public domain. Wheelhouse Prep is not affiliated with or endorsed by the U.S. Coast Guard.
No. The free practice tests work in your browser with no signup. Your score history is saved on your own device.
A selection of free questions from the official USCG sample examinations. Use the interactive modules above for timed, scored drills.
Under the Carriage of Goods by Sea Act of 1936, a vessel will be liable for damage to cargo when the damage arises out of which situation?
What is a wobbling tail shaft an indication of?
The Brazil Current flows in which general direction?
In which months will the North Equatorial Countercurrent be strongest?
If your propeller is racing in rough weather, which action should you take?
Why: Racing happens when pitching lifts the propeller near or out of the water, letting it overspeed and shock-load the shaft and engine. Reducing engine speed limits the overspeeding while keeping steerageway, unlike stopping entirely.
Who must approve the vessel's trim and stability booklet?
Why: For U.S. inspected vessels the trim and stability booklet must be approved by the Coast Guard, which reviews the stability data and inclining experiment results during plan approval.
What type of liquid is used in the liquid P/V breaker?
Which defines the function of a spark arrestor?
Why: A spark arrestor traps glowing carbon particles in an engine's exhaust, preventing them from escaping the exhaust system and igniting flammable vapors or materials nearby.
Quadrantal error in a gyrocompass has its GREATEST effect on which of the following?
A flammable liquid having a Reid vapor pressure of 8½ P.S.I.A. or less and a flash point of 80°F or below is grade __________.