Generally, cargo could be defined in terms of cargo mass.
For bulk and general cargo ships, the mass of transported cargo
should be defined in metric tonnes (t).
For ships carrying
a combination of containers and other cargoes a TEU mass of 10 t should
be applied for loaded TEUs and 2 t for empty TEUs.
For
other types of ship, the following units could be applied:
- For bulk carriers and tankers: cubic metres (m3)
- For passenger vessels: number of passengers
- For car ferries and car carriers: number of car units or occupied
lane metres
- For container ships: number of TEUs (empty or full)
- For railway and ro-ro vessels: number of railway cars and freight
vehicles, or occupied lane metres