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100+ Free STCW Oil/Chemical Tanker (Basic) Practice Questions

STCW Basic Training for Oil and Chemical Tanker Cargo Operations (V/1-1) practice questions are available now; exam metadata is being verified.

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2026 Statistics

Key Facts: STCW Oil/Chemical Tanker (Basic) Exam

V/1-1

STCW Regulation

STCW Convention and Code, Table A-V/1-1-1

One combined

Oil and Chemical Certificate

IMO Model Course 1.01

8% or less

Inerted Tank Oxygen Level

Inert gas system requirement

20.9%

Safe Entry Oxygen

Enclosed-space entry standard

3 months

Alternative Tanker Sea Service

STCW Regulation V/1-1

15 ppm

MARPOL Oily Water Discharge Limit

MARPOL Annex I

46 CFR Part 13

USCG Tankerman Basis

USCG Subpart F

STCW V/1-1 basic training for oil and chemical tanker cargo operations is the entry-level tanker certificate for crew with cargo duties on oil and chemical tankers, delivered worldwide by flag-state-approved centers (typically a 4-5 day course) and assessed by a written/MCQ test plus practical demonstration against Table A-V/1-1-1. Prerequisites are STCW basic safety training (A-VI/1) plus the approved course or three months approved tanker sea service. Content spans tanker types and cargo systems; cargo properties (flashpoint, vapour pressure, the LEL/UEL flammable range, the fire triangle); hazards (H2S, benzene and toxicity, electrostatic charging, reactivity, corrosion); hazard controls (inerting to 8% oxygen or less, purging, gas-freeing, gas measurement); safety equipment (breathing apparatus, enclosed-space entry, hot-work permits); tanker firefighting with foam; and pollution prevention under MARPOL Annexes I and II with SOPEP/SMPEP. It is one combined oil-and-chemical certificate; liquefied gas tankers require separate V/1-2 training.

Sample STCW Oil/Chemical Tanker (Basic) Practice Questions

Try these sample questions to test your STCW Oil/Chemical Tanker (Basic) exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Under STCW Regulation V/1-1, which prior training is a prerequisite before a seafarer can be certificated in basic training for oil and chemical tanker cargo operations?
A.Basic safety training under Section A-VI/1
B.Advanced firefighting under Table A-VI/3
C.Proficiency in survival craft under Section A-VI/2
D.Medical first aid under Table A-VI/4-1
Explanation: STCW Reg V/1-1 paragraph 1 requires that a candidate first complete basic safety training in accordance with Section A-VI/1 of the STCW Code before undertaking basic tanker cargo training.
2As an alternative to completing the approved basic tanker training course, what minimum seagoing service allows assignment of cargo-related duties under Reg V/1-1?
A.One month of approved seagoing service on any vessel
B.Three months of approved seagoing service on oil or chemical tankers
C.Six months of approved seagoing service on a passenger ship
D.Twelve months of approved seagoing service on a tanker
Explanation: STCW Reg V/1-1 allows the basic training requirement to be met by completing at least three months of approved seagoing service on oil or chemical tankers as an alternative to the approved basic course.
3Which of the following best describes a 'product tanker'?
A.A vessel carrying only unrefined crude oil from offshore fields
B.A vessel designed exclusively for liquefied natural gas
C.A vessel carrying refined petroleum products such as gasoline, diesel and jet fuel
D.A vessel carrying dry bulk cargo such as grain
Explanation: A product tanker carries refined petroleum products (e.g., gasoline, diesel, kerosene, jet fuel), as distinct from a crude tanker which carries unrefined crude oil.
4On a typical oil tanker, what is the primary purpose of inert gas in the cargo tanks?
A.To increase the cargo's evaporation rate for faster discharge
B.To add pressure that speeds up cargo pumping
C.To raise the temperature of the cargo during cold weather
D.To keep the oxygen content low enough that the atmosphere cannot support combustion
Explanation: Inert gas reduces the oxygen content in cargo tanks (typically to 8% or less by volume), keeping the atmosphere below the level that supports combustion regardless of hydrocarbon concentration.
5The lower flammable limit (LFL) of a hydrocarbon vapour-air mixture is best defined as the concentration:
A.Below which there is too little vapour to support combustion
B.Above which the mixture is too rich to ignite
C.At which the mixture burns with maximum violence
D.At which oxygen is completely displaced by vapour
Explanation: The lower flammable limit is the minimum vapour concentration in air below which the mixture is too lean (too little fuel) to ignite and propagate a flame.
6A cargo atmosphere whose hydrocarbon concentration is above the upper flammable limit (UFL) is described as:
A.Too lean to burn
B.Too rich to burn
C.At its most explosive
D.Fully inerted
Explanation: Above the upper flammable limit the mixture contains too much vapour and too little oxygen to support combustion, so it is described as 'too rich to burn'.
7The flashpoint of a petroleum liquid is the lowest temperature at which:
A.The liquid will boil at atmospheric pressure
B.The liquid will ignite and continue to burn without an external flame
C.It gives off enough vapour to form an ignitable mixture with air near its surface
D.Electrostatic charge can no longer accumulate
Explanation: Flashpoint is the lowest temperature at which a liquid releases sufficient vapour to form an ignitable mixture with air near the surface when an ignition source is applied.
8A cargo with a high vapour pressure (such as light naphtha) compared with a low-vapour-pressure cargo will:
A.Evaporate less readily and produce fewer vapours
B.Always have a higher flashpoint
C.Be unaffected by temperature changes
D.Evaporate more readily and produce more vapours
Explanation: A high vapour pressure means the liquid evaporates readily and generates more vapour, increasing the flammable-vapour and toxicity hazard during handling.
9Hydrogen sulphide (H2S), which may be present in some crude oils, is particularly dangerous because at higher concentrations it:
A.Rapidly deadens the sense of smell, so the warning odour disappears
B.Has such a strong smell that it always warns the crew in time
C.Is lighter than air and quickly disperses upward and away
D.Is non-toxic but merely irritating to the eyes
Explanation: H2S is detectable by its rotten-egg odour at low levels, but at higher concentrations it rapidly paralyses the sense of smell, removing the warning and allowing fatal exposure.
10Benzene, present in many crude oils and some refined products, is classified as a serious health hazard mainly because long-term exposure is associated with:
A.Permanent loss of hearing
B.Leukaemia and other blood-related cancers
C.Immediate skin frostbite
D.Loss of night vision only
Explanation: Benzene is a recognised carcinogen; chronic exposure is associated with leukaemia and other blood disorders, so exposure must be minimised using monitoring and respiratory protection.

About the STCW Oil/Chemical Tanker (Basic) Practice Questions

Verified exam format metadata for STCW Basic Training for Oil and Chemical Tanker Cargo Operations (V/1-1) is pending. The practice questions above remain available while official exam length, timing, passing score, fee, and administrator details are reviewed.