OCTCO/OCTF exit exam questions and answers — Set 2 — Oil and Chemical Tanker Cargo Operations
Set 2 of the Oil and Chemical Tanker Cargo Operations (OCTCO/OCTF) exit exam bank — 30 of 802 questions, with the correct option marked and a one-line explanation for every one. Read it end to end, jump to a single set, or search it — then sit the same bank as a timed paper. The real DG Shipping exit exam is 30 marks with 15 to pass.
These are the bank's original groupings. Practising deals the whole bank out again every time you reshuffle, so a practice “Set 3” is a different 30 questions each time — the set numbers below are the source file's, and are only used here so the key stays navigable. Options are listed in their original order with fixed letters; when you practise, those move too.
Bank last rebuilt .
30 of 30 shown · Set 2
Nothing in this set matches that. Try a shorter word, or search the whole key.
Set 2 — 30 OCTCO/OCTF exit exam questions with answers
1. What is the purpose of flame screens fitted on tank vent outlets?
- A. Keep birds out
- B. Prevent passage of external sparks/flames into cargo tank vapor space
- C. Stop liquid splash
- D. Filter dust
2. What does SOPEP stand for?
- A. Standard Operational Protocol
- B. Shipboard Oil Pollution Emergency Plan
- C. System for Oil Prevention
- D. Safety Officer Program
3. What is ullage in a cargo tank?
- A. Distance from liquid surface up to reference point at top of sounding pipe
- B. Engine room air volume
- C. Total cargo weight
- D. Depth of liquid
4. Why must cargo manifolds be fitted with blank flanges bolted with full set of bolts when not in use?
- A. Provide positive secondary liquid/vapor containment against valve leakage
- B. Keep manifold painted
- C. Weight balance
- D. Improve appearance
5. What is the primary cause of sloshing damage in partially filled cargo tanks?
- A. Pump suction
- B. Inert gas fan vibration
- C. High cargo temp
- D. Violent movement of liquid cargo creating severe dynamic impact pressures against bulkheads
6. What equipment measures oil content in water discharging from bilges or slop tanks?
- A. Thermometer
- B. Flow meter
- C. Tachometer
- D. Oil Content Meter (OCM) / 15 ppm alarm
7. What precaution must be observed when taking manual oil soundings on an inerted tanker?
- A. Use nylon rope
- B. Use vapor-lock valves and metallic sounding tapes properly grounded/bonded to ship structure
- C. Open main hatch wide
- D. Stand barefoot
8. What is the function of cargo tank heating coils on oil tankers?
- A. Wash tank walls
- B. Boil cargo into gas
- C. Cool down cargo
- D. Maintain cargo temperature to reduce viscosity for efficient pumping
9. What is a Segregated Ballast Tank (SBT)?
- A. Engine sump
- B. Drinking water tank
- C. Slop tank
- D. Ballast tank completely separate from cargo oil system, filled only with clean sea water
10. What condition requires immediate stopping of oil cargo transfer?
- A. Sunset
- B. Cargo spill on deck, manifold valve leakage, sudden pressure drop, or lightning storm
- C. Radio broadcast start
- D. Change of steering helm
11. What is the Lower Explosive Limit (LEL) of typical crude oil hydrocarbon vapors in air?
- A. 20%
- B. 50%
- C. Approximately 1% by volume
- D. 0.01%
12. What is the role of an Oil Spill Removal Organization (OSRO)?
- A. Provide containment booms, skimmers, and professional cleanup assistance
- B. Inspect engine certificates
- C. Operate cargo pumps
- D. Issue bill of lading
13. Why is water prohibited as an extinguishing agent directly on liquid oil pool fires?
- A. Water turns oil to gas
- B. Water is heavier than oil; oil floats on top and spreads burning liquid over wider area
- C. Water freezes oil
- D. Water generates oxygen
14. What fire extinguishing system is standard protection for oil tanker cargo deck areas?
- A. CO2 gas flooding open deck
- B. Sprinkler fresh water
- C. Fixed Deck Foam System (Low expansion foam)
- D. Halon gas
15. What is the purpose of ballast water exchange (BWE) under BWM Convention?
- A. Cool deck
- B. Replace coastal ballast water with open-ocean deep sea water to prevent invasive species transfer
- C. Clean fuel tanks
- D. Wash cargo lines
16. What device measures ullage, oil/water interface level, and temperature with a single portable probe?
- A. MMC / UTI (Ullage-Temperature-Interface) portable tape
- B. Wooden dipstick
- C. Glass thermometer
- D. Hydrometer
17. What is gas freeing on an oil tanker?
- A. Heating cargo
- B. Closing all vents
- C. Filling tank with crude
- D. Replacing hydrocarbon or inert gas in cargo tanks with fresh breathable air
18. What risk occurs if a cargo pump is run dry without liquid flow?
- A. Paint peeling
- B. Deck freezing
- C. Electrical short circuit
- D. Overheating of mechanical seals and bearings, causing fire hazard or pump seizure
19. What publication specifies standard communication signals between ship and tugs during berthing?
- A. Medical Guide
- B. Standard Marine Communication Phrases (SMCP) / Port Berthing Plan
- C. Cookery Guide
- D. Engine Telegraph Manual
20. Who has ultimate responsibility for the safety of cargo operations and environmental compliance on an oil tanker?
- A. Shore pump operator
- B. Customs inspector
- C. The Ship's Master
- D. Port Agent
21. What is the alternative means of supply of sea water to the deck seal unit in case of maintenance or failure of designated deck seal Pump?
- A. Through the deck fire line
- B. Through the main sea water pump or the cargo condenser pump
- C. Through the deck seal pump fitted in the engine room
- D. Through a sea water aggregate pump fixed on the cargo deck
22. Expand the abbreviation 'ESD' system?
- A. Emergency stop and disconnect system
- B. Emergency shut down system
- C. Emergency shore disconnection system
- D. Emergency shutting and disconnecting system
23. Chapter 4 MARPOL annex VI was adopted on?
- A. 17th August 2009
- B. 1st March 2012
- C. 1St January 2010
- D. 15th July 2011
24. A centrifugal bilge pump requires priming?
- A. In order to overcome the potential energy of water in the discharge line.
- B. Primarily to lubricate the shaft.
- C. Due to the inability of this type of pump to lift water to cover the suction(eye)) of the empeller.
- D. To initially unload the pump by having its head pressure equal to discharge pressure
25. A scrubber tower which is normally acts as a _____.
- A. Heater
- B. Cooler
- C. Humidifier
- D. Dehumidifier
26. On many modern VLCC tankers which of the following device is used to top up IG pressure on loaded condition in case of slight reduce in tank temperature.
- A. Supplement IG by the boiler and standard method.
- B. Do not fire the main boiler plant due to excess fuel consumption which is more than allowed in the agreement
- C. A separate IGG plant if installed separately
- D. Wat till the discharge port, open tank vent to allow a little rise in tank pressure.
27. What is handy size tanker.
- A. Tankers of about 12000 to 25000 DWT.
- B. From 26000 to 16500 tdw
- C. Under 16,500 DWT
- D. from 36000 to 26000 tdw
28. Before cargo operations begin the responsible person on board and the terminal representative will complete___?
- A. Meeting agreement
- B. Ship / shore operation plan
- C. Ship details plan
- D. Ship / shore safety check list
29. In theory, a cargo pump should be able to draw up a liquid to a height equaling atmospheric pressure. This would be approximately ___?
- A. 30 meters
- B. 15 meters
- C. 5 meters
- D. 10 meters
30. In flue gas line. It would be advantageous to fit _______door downstream from the flue gas valve?
- A. Inspection
- B. Access
- C. both a and b
- D. None of the above
Printing this? Use your browser's Print (Ctrl/⌘ + P) — the buttons, the search box and the site chrome drop out and the questions run on as plain text, so a set fits a few pages. Filter to one set first if you only want that set on paper.
