um??What do Australians call cargo unit?
A vehicle, container, flat, pallet, portable tank, package unit, or any other entity, etc., and loading equipment, or any part thereof, which belongs to the ship but is not fixed to it.
I think the closest would be a type of mobile home like a trailer, but yeah, maybe it could be from a container also.Neither of us live there, maybe we need @Brian Boru to tell us what they are in America. I guess they could be houses or apartments.