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Key Facts: Adv. Chemical Tanker Exam

Table A-V/1-1-3

Competence Standard

STCW Code Reg V/1-1

3 months

Prerequisite Tanker Service

STCW Reg V/1-1

75 litres

Max Tank Residue (post-2007)

MARPOL Annex II

7 kn / 12 nm / 25 m

Annex II Discharge Criteria

MARPOL Annex II

Type 1/2/3

IMO Chemical Tanker Types

IBC Code

20.9% O2

Normal Oxygen for Entry

Enclosed-space entry

Advanced Chemical Tanker Cargo Operations is the STCW Reg V/1-1 endorsement for officers and crew with immediate responsibility for cargo on chemical tankers, assessed to Table A-V/1-1-3. Candidates must first hold the basic oil/chemical tanker certificate and have at least three months of approved chemical-tanker service or approved onboard training. The roughly five-day approved course covers chemical tanker design (IMO ship types 1/2/3, stainless-steel and zinc/epoxy tanks, deepwell pumps, heating, dedicated lines, ESD), the IBC Code (Certificate of Fitness, Chapter 17 carriage requirements, P&A Manual), cargo properties and the compatibility/segregation chart, inhibitors and inhibitor certificates, cargo operations (ullaging, nitrogen padding, vapour return, prewash and the MARPOL Annex II categories X/Y/Z with the 75-litre stripping standard and en-route discharge criteria), gas detection (oxygen, LFL/UFL, TLV/PEL), and health hazards, first aid (MFAG) and emergency response. Assessment is pass/fail against the provider's standard, commonly a multiple-choice written test plus practical demonstration.

Sample Adv. Chemical Tanker Practice Questions

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1Under STCW Regulation V/1-1, which personnel must hold a certificate in ADVANCED training for chemical tanker cargo operations?
A.Masters, chief engineer officers, chief mates, second engineer officers and any person with immediate responsibility for cargo operations on chemical tankers
B.Only the ship's master and chief engineer officer
C.All ratings forming part of a navigational watch
D.Only shore-based cargo surveyors and terminal staff
Explanation: STCW Reg V/1-1 paragraph 5 requires masters, chief engineer officers, chief mates, second engineer officers and any person with immediate responsibility for loading, discharging, care in transit, handling of cargo, tank cleaning or other cargo-related operations on chemical tankers to hold a certificate in advanced training for chemical tanker cargo operations.
2Before certification in advanced chemical tanker cargo operations under Reg V/1-1, what minimum approved seagoing service on chemical tankers is generally required as a prerequisite?
A.Three months of approved seagoing service on chemical tankers (or approved onboard training)
B.One month of approved seagoing service on chemical tankers
C.Six months of approved seagoing service on any tanker
D.Twelve months of approved seagoing service on oil tankers
Explanation: STCW Reg V/1-1 paragraph 6 requires the candidate to first hold the basic certificate and to have completed at least three months of approved seagoing service on chemical tankers, or alternatively an approved period of onboard training, before advanced certification.
3Under the IBC Code, an IMO Type 1 chemical tanker is intended to carry products that:
A.May be carried in any single-hull configuration without restriction
B.Present only moderate hazards requiring minimal containment
C.Are non-hazardous bulk liquids such as vegetable oils
D.Present the most severe environmental and safety hazards and require maximum preventive measures against escape
Explanation: The IBC Code defines a Type 1 ship as one intended to transport Chapter 17 products with very severe environmental and safety hazards that require maximum preventive measures to preclude an escape of such cargo; Type 1 imposes the strictest tank-location and damage-survival standards.
4Which document sets out the specific cargoes a chemical tanker is permitted to load, carry and discharge, together with carriage conditions?
A.The International Oil Pollution Prevention (IOPP) Certificate
B.The International Ship Security Certificate
C.The Minimum Safe Manning Document
D.The Certificate of Fitness for the Carriage of Dangerous Chemicals in Bulk
Explanation: Under the IBC Code, a chemical tanker carries a Certificate of Fitness for the Carriage of Dangerous Chemicals in Bulk, which lists the products the ship may carry and the conditions of carriage; only listed cargoes may be loaded.
5What is the primary purpose of nitrogen padding (blanketing) above a sensitive chemical cargo such as styrene monomer?
A.To increase the cargo temperature for easier discharge
B.To raise tank pressure so cargo can be discharged without pumps
C.To exclude oxygen and moisture, preventing oxidation, polymerisation or moisture contamination of the cargo
D.To neutralise acidic vapours in the tank
Explanation: Nitrogen padding maintains an inert blanket over the cargo to exclude oxygen and atmospheric moisture, which prevents oxidation, oxygen-initiated polymerisation and water contamination for cargoes that are reactive with air or moisture.
6A cargo such as butadiene or vinyl acetate is loaded with an added inhibitor. Before loading, what document must the master obtain from the shipper?
A.A bunker delivery note
B.An inhibitor certificate stating the inhibitor type, quantity, date added and duration of effectiveness
C.A ballast water management plan
D.A garbage record book entry
Explanation: For inhibited cargoes the IBC Code requires the shipper to supply an inhibitor certificate giving the name and quantity of inhibitor, the date added, the expected duration of effectiveness and any temperature limits, so the crew can verify the cargo will remain stabilised throughout the voyage.
7Under MARPOL Annex II, a noxious liquid substance classified in Category X is one that, if discharged into the sea, is deemed to present:
A.A minor hazard, justifying relaxed discharge restrictions
B.No hazard at all
C.A major hazard, justifying a prohibition of discharge into the marine environment
D.A hazard only to ship structure, not to the environment
Explanation: MARPOL Annex II Category X covers NLS deemed to present a major hazard to marine resources or human health, justifying the prohibition of discharge into the marine environment; Category X tanks require a mandatory prewash with residues sent ashore.
8For ships constructed on or after 1 January 2007, MARPOL Annex II limits the quantity of cargo residue that may remain in a tank certified for Category X, Y or Z substances to a maximum of:
A.300 litres per tank
B.150 litres per tank
C.75 litres per tank
D.10 litres per tank
Explanation: MARPOL Annex II requires that the pumping and piping of ships built on or after 1 January 2007 be arranged so that each tank certified for Category X, Y or Z does not retain more than 75 litres of residue, ensuring efficient stripping performance.
9When discharging permitted NLS residue/water mixtures into the sea under MARPOL Annex II, the ship must be proceeding en route at a speed of at least:
A.4 knots
B.7 knots
C.10 knots
D.15 knots
Explanation: MARPOL Annex II permits discharge of qualifying residue/water mixtures only when the ship is en route at not less than 7 knots (for self-propelled ships), at least 12 nautical miles from the nearest land and in water at least 25 metres deep.
10Two cargoes that react together in a hazardous manner must be segregated. Under the IBC Code, an acceptable method of segregation is to separate them by:
A.A cofferdam, void space, pump room, empty tank or a tank containing a mutually compatible cargo, with separate piping and venting
B.A common vent line shared between the two tanks
C.A single valve in an otherwise shared pumping system
D.Carrying them in adjacent tanks with no barrier
Explanation: The IBC Code requires reactive cargoes to be segregated by a cofferdam, void space, cargo pump room, empty tank or a tank holding a mutually compatible cargo, with separate pumping/piping systems and separate venting so the vapours and liquids cannot mix.

About the Adv. Chemical Tanker Exam

The STCW Advanced Chemical Tanker Cargo Operations course meets Regulation V/1-1 and the competence standard in Table A-V/1-1-3 of the STCW Code for masters, chief mates, chief and second engineers and any person with immediate responsibility for cargo on chemical tankers. It builds on the basic oil/chemical tanker certificate and covers chemical tanker design and systems, the IBC Code and Certificate of Fitness, cargo properties and compatibility, MARPOL Annex II, gas detection, and emergency response. Most flag-state-approved centres deliver about a five-day course with a written (commonly multiple-choice) assessment plus practical evaluation. Prerequisites are the basic certificate and three months of approved chemical-tanker service or approved onboard training.

Exam sponsor: Flag-state-approved maritime training centres under the IMO STCW Convention. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Question count not published by the exam provider

Time Limit

Course typically 5 days; written assessment length set by the provider

Passing Score

Set by the approved provider (commonly about 70% pass mark)

Exam / Certification Fees

Varies by training centre (typically a few hundred USD)

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

18%

Chemical Tanker Design, Systems & Equipment

IMO ship types 1/2/3 and protective tank location, stainless-steel tanks and zinc-silicate/epoxy coatings with their pH limits, hydraulic deepwell cargo pumps, dedicated lines, cargo heating/cooling, pressure-vacuum valves, closed gauging, the cargo control room, emergency shutdown (ESD) and high-level/overfill alarms

15%

IBC Code & Certification

The Certificate of Fitness for the Carriage of Dangerous Chemicals in Bulk, IBC Chapter 17 carriage requirements (required ship type, tank type, tank environmental control such as inerting/padding/drying, venting), the MARPOL Annex II Procedures and Arrangements (P&A) Manual and the Cargo Record Book

16%

Cargo Properties & Compatibility

Reactivity with air, water and self (polymerisation), flash point, vapour density, toxicity and corrosivity; using the USCG/IBC compatibility chart to identify mutual reactants; segregation by cofferdam/void/compatible-cargo tank with separate piping and venting; inhibitors and the shipper's inhibitor certificate

18%

Cargo Operations

Cargo planning and the ship/shore safety checklist, ullaging/sampling, nitrogen padding and vapour return, closed operations, tank cleaning, prewash and wall-wash testing, stripping efficiency, MARPOL Annex II categories X/Y/Z with the 75-litre residue standard and en-route discharge (7 knots, 12 nm, 25 m, below waterline), trim, stability and structural integrity

13%

Gas Detection & Monitoring

Oxygen measurement and enrichment/deficiency, flammable range (LFL/UFL), toxicity exposure limits (TLV/PEL), catalytic combustible-gas indicators and their oxygen dependence, chemical-specific detector tubes, fixed and portable instrument calibration, vapour density and the oxygen-flammable-toxic atmosphere testing order

10%

Health Hazards & First Aid

Toxic exposure routes and the hydrogen sulphide hazard, the Medical First Aid Guide for Use in Accidents Involving Dangerous Goods (MFAG), skin/eye/inhalation first aid, prolonged water flushing, safety showers and eyewash stations, and casualty decontamination

10%

Emergency Procedures & PPE

Deck and pump-room spill response and containment, self-contained breathing apparatus and chemical-protective suit selection by permeation/breakthrough, firefighting-media selection including alcohol-resistant foam, enclosed-space and pump-room rescue, risk assessment and tanker safety culture under the SMS

Preparing for the Adv. Chemical Tanker Exam

What You Need to Know

  • Passing score: Set by the approved provider (commonly about 70% pass mark)
  • Assessment: Question count not published by the exam provider
  • Time limit: Course typically 5 days; written assessment length set by the provider
  • Exam / certification fees: Varies by training centre (typically a few hundred USD) Official sources

Using Our Practice Resources

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Adv. Chemical Tanker: Suggested Study Strategy

1Memorise the MARPOL Annex II discharge criteria: en route at not less than 7 knots, at least 12 nautical miles from land, water at least 25 metres deep, below the waterline, with the 75-litre stripping standard for ships built on or after 1 January 2007
2Learn the IMO ship types: Type 1 for the most severe hazards (maximum measures), Type 2 for appreciably severe hazards, and Type 3 for products needing a moderate degree of containment
3Practise the enclosed-space atmosphere testing order: oxygen first (about 20.9% and not enriched), then flammable gas (well below the LFL), then toxic gas (below the TLV/PEL)
4Know why a catalytic combustible-gas indicator under-reads in an inerted tank - it needs oxygen to oxidise the gas - and use an oxygen-independent meter for inert atmospheres
5Understand the inhibitor certificate: some inhibitors (e.g. for styrene) need a small amount of oxygen, so full nitrogen padding could defeat them and allow polymerisation
6For chemical skin or eye contamination, flush immediately with copious water for at least 15 minutes and remove contaminated clothing; do not attempt to neutralise the chemical on the skin

Frequently Asked Questions

What is the STCW Advanced Chemical Tanker Cargo Operations certificate?

It is the STCW Regulation V/1-1 endorsement, assessed to Table A-V/1-1-3, required for masters, chief mates, chief and second engineers and anyone with immediate responsibility for cargo on chemical tankers. It covers chemical tanker design, the IBC Code, cargo compatibility, MARPOL Annex II and emergency response.

What are the prerequisites for the advanced course?

Candidates must already hold the basic training certificate for oil and chemical tanker cargo operations and have completed at least three months of approved seagoing service on chemical tankers, or an approved period of onboard training, before sitting the advanced course.

Is the assessment multiple choice?

STCW sets a competence standard, not a fixed exam. Most flag-state-approved centres use a written end-of-course assessment that is commonly multiple choice, combined with practical or simulator demonstration assessed against the Table A-V/1-1-3 criteria. The pass mark is set by the provider, often around 70 percent.

What is the IMO ship type system on chemical tankers?

The IBC Code assigns each cargo a required ship type. A Type 1 ship carries the most hazardous products with maximum preventive measures, Type 2 covers appreciably severe hazards, and Type 3 covers products needing a moderate degree of containment. The type governs tank location and damage survival.

What does MARPOL Annex II require for tank residues?

Annex II categorises noxious liquid substances as X, Y or Z. Ships built on or after 1 January 2007 must strip tanks to no more than 75 litres of residue. Category X tanks require a mandatory prewash to a reception facility; permitted residue discharge to sea must be en route at 7 knots, 12 nm from land, in 25 m of water, below the waterline.

Why are inhibitor certificates important?

Reactive cargoes such as styrene carry an inhibitor to prevent polymerisation. The shipper must provide an inhibitor certificate stating the inhibitor type, quantity, date added and duration of effectiveness, and whether the inhibitor needs oxygen, so the crew can manage temperature and tank atmosphere safely.

How long is the course and how often must it be refreshed?

The approved course is typically about five days. The certificate of proficiency is generally retained, but seafarers must meet the flag-state's continued-competence and document-revalidation requirements, including recent relevant seagoing service, to keep their endorsement valid.