A Forty-Foot Equivalent Unit (FEU) is a standard measurement unit in maritime shipping representing the volume equivalent to a container that is 40 feet in length. It helps to quantify shipment volume and is crucial in determining freight charges.
In terms of Twenty-Foot Equivalent Units (TEU), an FEU is equivalent to 2 TEU. As a practical example, transporting a combination of two 20-foot containers and one 40-foot container would be equal to 2 FEU or 4 TEU.