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On tankers, the measurement of cargo quantity loaded is simple.

So in this post I will discuss about how to go about measuring the cargo quantity with draft survey. The only difference between weight measurement in case of truck and ship is that for later the calculation is not that simple. The difference plus all the weights that were taken out (like ballast) will be the cargo loaded. With draft survey we measures the initial weight (displacement) of the ship and it measures the final weight (displacement) of the ship after loading.

Well draft survey uses a similar principle to measure the cargo loaded on board ships. The difference is the weight of the cargo on that truck. It weighs the empty weight of the truck and then the loaded weight. Have you seen a truck weighing bridge ? Do you know how it works ?