The exact definition of transshipment may differ between ports, mostly depending on the inclusion of inland water transport (barges operating on canals and rivers to the hinterland).
The definition of transshipment may: In both cases, a single, unique, transshipped container is counted twice in the port performance, since it is handled twice by the waterside container cranes (separate unloading from arriving ship A, waiting in the stack, and loading onto departing ship B).
Since transshipment at sea encounters often happen on the high seas, in regions with poor regulation and oversight, they are also used to disguise criminal activities such as illegal, unreported and unregulated fishing, forced labor, human trafficking and drug smuggling.
[2] Several states and regional fishery management organizations have therefore prohibited the practice for certain vessel types or issued a complete ban within their zone of jurisdiction.
Choosing to transship reduces capital costs for port developers and can overcome problems arising from limited access to deep water.