Tanker Familiarization Types of Tankers 2 — Questions and Answers
Question 1: Which type of tanker is specifically designed to carry liquefied natural gas (LNG)?
- VLCC
- LNG carrier (Correct answer)
- Aframax
- Product tanker
Correct answer: LNG carrier
LNG carriers are specially insulated vessels designed to transport liquefied natural gas at cryogenic temperatures around -162°C.
Question 2: What distinguishes a chemical tanker from a product tanker?
- Chemical tankers are larger
- Chemical tankers have independent, coated or stainless-steel tanks for segregation of multiple cargoes (Correct answer)
- Chemical tankers only carry acids
- Chemical tankers do not require special certifications
Correct answer: Chemical tankers have independent, coated or stainless-steel tanks for segregation of multiple cargoes
Chemical tankers feature multiple independent tanks with specialized coatings or stainless-steel construction to safely carry a variety of chemical cargoes without contamination.
Question 3: A Suezmax tanker is sized to:
- Transit the Panama Canal fully loaded
- Transit the Suez Canal fully loaded (Correct answer)
- Operate only in coastal waters
- Carry LPG in pressurized tanks
Correct answer: Transit the Suez Canal fully loaded
Suezmax tankers are designed with a maximum beam and draft that allows full-load transit through the Suez Canal.
Question 4: What is the primary purpose of an FSO (Floating Storage and Offloading) unit?
- To refine crude oil offshore
- To store produced oil offshore and transfer it to shuttle tankers (Correct answer)
- To lay subsea pipelines
- To transport LNG between terminals
Correct answer: To store produced oil offshore and transfer it to shuttle tankers
An FSO serves as a stationary offshore storage vessel that accumulates crude oil or other hydrocarbons from production facilities and offloads it to shuttle tankers.
Question 5: Which tanker classification is typically used for coastal and short-sea trades due to its smaller size?
- ULCC
- VLCC
- Handysize (Correct answer)
- Suezmax
Correct answer: Handysize
Handysize tankers, typically 10,000–40,000 DWT, are well-suited for coastal routes, smaller ports, and short-sea trades where larger vessels cannot operate.
Question 6: LPG carriers transport cargo such as propane and butane in what condition?
- As compressed gas at high pressure or refrigerated liquid (Correct answer)
- As solid pellets mixed with sand
- As a dissolved solution in seawater ballast
- At ambient temperature and pressure in open tanks
Correct answer: As compressed gas at high pressure or refrigerated liquid
LPG is carried either fully pressurized, semi-pressurized/semi-refrigerated, or fully refrigerated as a liquid to keep it in a manageable state.
Question 7: Which of the following best describes a shuttle tanker?
- A tanker permanently moored as a storage unit
- A tanker that shuttles crude oil from offshore production fields to onshore terminals (Correct answer)
- A tanker designed exclusively for LNG transport
- A tanker used only for dry-docking purposes
Correct answer: A tanker that shuttles crude oil from offshore production fields to onshore terminals
Shuttle tankers are specially equipped oil tankers that transport crude oil from offshore loading buoys or FPSOs to onshore refineries or storage terminals.
Tanker Familiarization Types of Tankers 2
Which type of tanker is specifically designed to carry liquefied natural gas (LNG)?