OT
Container types & equipmentOpen Top container
A container with a removable tarpaulin roof so cargo can be loaded from above by crane.
In practice
For tall machinery or cargo that cannot go through the doors. If cargo sticks out above the roof line it is over-height (OH) and needs a special stowage position, usually at extra cost.
Seen in the wild
Machine is 2.9 m high, so 40OT with over-height of 30 cm.