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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 2 modules: Tankship Dangerous Liquids, Tankship Liquefied Gases.
This page includes free sample questions drawn from the official USCG sample examinations, with a full bank of around 99 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.
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A selection of free questions from the official USCG sample examinations. Use the interactive modules above for timed, scored drills.
In order to reduce the accumulation of static electricity while loading petroleum products, you should __________.
Which topic is NOT required to be discussed at the pre-transfer conference?
The person in charge on the vessel and the person in charge at the facility must hold a meeting before starting the transfer of oil. Who must decide to start the transfer?
Why: Federal oil-transfer regulations (33 CFR 156) require a pre-transfer conference, and pumping may begin only when both persons in charge agree. Neither the vessel PIC nor the facility PIC may start the transfer unilaterally.
In reference to accidental oil pollution, the most critical time during bunkering is when __________.
When stripping a tank, what is caused by excessive air in the suction line?
How can you determine which grades of cargo a tank vessel is permitted to carry?
What causes the most frequent incidents of pollution during tanker operations?
How should pinching of the cargo hose between the vessel and the dock be prevented?
U.S. regulations state that no person may transfer oil to or from a vessel unless which of the following conditions is met?
46 CFR directs the location of fuel oil sounding tubes and access openings for fuel oil tanks on cargo vessels. Where can the tubes be located?
Who enforces the U.S. pollution regulations that apply to ships?
Which of the following describes the flash point temperature of a liquid?
U.S. regulations require a meeting before starting any oil transfer operation. Who must be in attendance at this meeting?
What is the maximum allowable oxygen content within the ships cargo tanks, inert gas piping and the vapor recovery system?
Your vessel is taking on cargo oil when a small leak develops in the hose. You order the pumping stopped. What action should you take before you resume pumping?
Cargo hose carried on tank vessels shall be able to withstand a pressure of at least how many psi?
What should be the first consideration when discharging an oil cargo?
What is the required gas supply capacity of an inert gas system?
Your tank vessel is loaded down to her marks, and you find that she has too much trim by the stern. Which of the following actions would reduce the excessive trim?
The cargo pump relief valve is usually piped to which of the following components?