10 exam-style questions with answers and explanations, straight from our 1,051-question bank. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
A vessel is alongside to load gasoline. The vessel and facility PICs meet at 0800 and begin completing the Declaration of Inspection. Hoses are connected at 0830, the DOI is signed at 0845, and cargo begins flowing at 0900. Under 33 CFR 156.120, at what point did the transfer legally begin?
Correct answer: A - 0800, when the two PICs met to complete the DOI
A cargo tank has been inerted to 6% oxygen. A crew member uses a catalytic-bead combustible gas indicator to check the tank for hydrocarbons and reports a reading well below the LFL. The PIC should recognize that:
Correct answer: D - The reading is unreliable, because the instrument needs oxygen to work; a tankscope should be used
A tankerman working a crude oil discharge notices the smell of rotten eggs on deck, then reports a few minutes later that the smell has gone away. The most likely explanation is:
Correct answer: A - Olfactory fatigue has set in and the H2S level may be rising
An inert gas system protects a cargo tank against fire and explosion primarily by:
Correct answer: B - Reducing the oxygen content so the atmosphere is too lean to burn
Which of the following cargoes is considered a static accumulator requiring a settling period before gauging or sampling?
Correct answer: C - Kerosene
A cargo tank containing gasoline vapor must be prepared for entry. To avoid passing the tank atmosphere through the flammable range, the correct sequence is:
Correct answer: B - Purge with inert gas to reduce hydrocarbon content, then gas free with fresh air
An applicant has 90 days of qualifying sea service and has participated in 10 cargo transfers under the supervision of a PIC: 7 loadings and 3 discharges, including 2 commencements and 2 completions of each. For an original Tank Vessel-PIC endorsement, this applicant:
Correct answer: C - Does not qualify, because at least 5 loadings and 5 discharges are required
During stripping, a tankerman reports that the discharge valve on a reciprocating cargo pump has been inadvertently closed while the pump continued running. The immediate concern is that:
Correct answer: C - The pump will overpressure the discharge line and may rupture it
Before a crew member enters a cargo tank, the atmosphere must be tested. Which parameter is tested FIRST, and why?
Correct answer: D - Oxygen, because the oxygen reading validates the combustible gas reading
On an inerted tankship, the maximum oxygen content permitted in the inert gas delivered in the IG main, and the maximum permitted in the cargo tank atmosphere, are respectively:
Correct answer: A - 5% and 8% by volume
The full bank has 1,041 more PIC questions with explanations.
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