Mr. Paschal Hayes:

I will go through the option again. Let us say half the truck is filled with chilled water, the truck is brought across the weighbridge and a weight is recorded. The truck then backs up to the pier-side device, the fish are added to the tanker and the tanker drives off to the weighbridge where it is weighed again. One weight is then deducted from the other, giving a very accurate weight of the fish.