LGTCO/LGTF Exit Exam • Set 6 Question 12 of 30

What is the function of insulation on a liquefied gas carrier?

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Direct Answer

Option C: reduces heat ingress into low-temperature cargo

Specialized insulation on liquefied gas carriers minimizes external heat ingress into cryogenic cargoes. Per SIGTTO guidelines, maintaining low thermal conductivity prevents excessive boil-off gas (BOG) generation, protecting structural steel from brittle fracture induced by extreme cold.

All Options

to replace cargo documentation

to reduce crew watchkeeping requirements

reduces heat ingress into low-temperature cargo (Correct Answer)

to store domestic fresh water

Detailed Explanation & Context

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Liquefied Gas Tanker Cargo Operations (LGTCO/LGTF).

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More Questions in LGTCO/LGTF Set 6

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Q1 Running two identical centrifugal cargo pumps in parallel will result in: Q2 Whether cargo tanks are of Type 'A', 'B' or 'C', a complete double hull is required for carriage of liquefied gas cargoes below what temperature? Q3 What is the minimum water application rate of the fixed water spray system for fire protection purposes on horizontal deck surfaces? Q4 What is the minimum water application rate of the fixed water spray system for fire protection purposes on vertical surfaces? Q5 In fixed gas-detection systems on board gas carriers, the Gas Codes mandate that sampling intervals from any one space must not exceed: Q6 What is the name of the statutory certificate issued by a Flag Administration confirming that a gas carrier complies with the IGC/GC Gas Code? Q7 Which space is defined as the space enclosed by the ship's structure in which a cargo containment system is situated? Q8 Which petroleum gases does commercial LPG mainly consist of? Q9 What is the primary purpose of inerting on a liquefied gas carrier? Q10 What is the function of membrane tank on a liquefied gas carrier?