Specific gravity is used by the American Petroleum Institute (API) to classify various
Direct Answer
Option C: Weights of oil
API gravity, defined by the American Petroleum Institute, is an inverse measure of a petroleum liquid's density relative to water. It classifies oils based on their specific gravity, directly indicating their weight per unit volume. Higher API gravity signifies lighter oils, crucial for cargo calculations and stability as per ISGOTT.
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Detailed Explanation & Context
API gravity, defined by the American Petroleum Institute, is an inverse measure of a petroleum liquid's density relative to water. It classifies oils based on their specific gravity, directly indicating their weight per unit volume. Higher API gravity signifies lighter oils, crucial for cargo calculations and stability as per ISGOTT.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Chemical Tanker Cargo Operations (CHEMCO).
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