TEU
From UG
TEU - The twenty-foot equivalent unit (often TEU or teu) is an inexact unit of cargo capacity often used to describe the capacity of container ships and container terminals. It is based on the volume of a 20-foot long intermodal container, a standard-sized metal box which can be easily transferred between different modes of transportation, such as ships, trains and trucks.[1]
TEU capacities for common container sizes:
20 ft ~ 1 TEU 40 ft ~ 2 TEU 45 ft ~ 2 or 2.25 TEU 48 ft ~ 2.4 TEU 53 ft ~ 2.65 TEU
It is common to designate 45-foot (14 m) containers as 2 TEU, rather than 2.25 TEU.