A particular system of calculation of the paying unit, the base throught which can be estimated the freight charges in case of a not Full cargo ( i.e. full Container of full Truck,) have to be used for every kind of transport, Road, Sea, Air, Rail.
W/M Tariff: usually the freight is applied on the Weight calcolate in metric tons (of 1.000kos/each) or on the Measurement calculated in Cubic Meters, whatever the highest, on the favour of the shipping line.
W Tariff: some cases the freghit is calculated only based on the Weight.
LM Tariff: in the case of RO-RO seashipments some times a tariff based on the Linear Meter is used.
The freight charge is calculated on the Weight (Kos), the maximum ratio between weight (kos) and measurment (CBM) off 1.000 kos : 6 CBM, if the volume of the cargo is higher the ratio 1 : 6 then the paying unit can be obtained dividing the volume by 6.
The freight charge is calculated on the Weight based on 100 Kos, the maximum ratio between weight (kos) and measurment (CBM) off 1.00 kos : 3 CBM; if the volume of the cargo is higher the ratio 1 : 3 then the paying unit can be obtained dividing the volume by 3.
The freight charge is calculated on the Weight but can be different considering characteristic of the cargo.