Calibration (strapping) tables are used for which purpose?

• A. Measuring pressure
• B. Converting linear measurements to volume
• C. Determining API
• D. Measuring temperature

Answer: (B)

Strapping (calibration) tables are used to turn a liquid depth or linear measurement inside a tank into the actual cargo volume. They’re built from the tank’s geometry, so when you measure how high the liquid stands in different sections, the table converts those depths into cubic meters (or barrels) of liquid. This is the basis for determining how much cargo you have or have left. They are not used for measuring pressure, calculating API gravity, or measuring temperature. Pressure gauges, API gravity, and temperature measurements serve different purposes, while the strapping table directly provides volume based on the tank’s shape and the measured depths.