Hub and spoke at sea
Large ships earn their keep on long routes between major ports, and every extra call slows them down. Feeders fill the gaps, shuttling containers between a hub and the ports around it, from shallow river ports to small island terminals. Some feeders belong to the main carrier's own network. Others are run by independent operators that carry boxes for several lines at once.
Feeder legs on a container record
A feeder leg shows up as its own vessel name and voyage, either before the mainline leg at origin or after it at destination. Some carriers list the feeder as pre-carriage or on-carriage rather than as a main vessel. The container is discharged at the hub and then loaded again, so a feeder routing always brings transshipment events with it.
Time lost on feeder routings
Feeder connections add waiting as well as handling. Many feeder services sail less often than mainline loops, so a container that misses one can sit at the hub for days. When a hub is congested, feeder space can also run short as boxes pile up for the same small ports. If the feeder leg comes at the destination end, the mainline ETA alone says little about when the box will actually arrive.
- Missed feeders on infrequent services
- Hub yard time while the box waits for its feeder
- A vessel name change that confuses manual tracking
Example
Containers from Riga typically reach Asia by feeder to a North Sea hub such as Hamburg or Rotterdam, where they are loaded onto large mainline ships.
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Questions
What does Feeder Vessel mean?
A feeder vessel is a smaller container ship that carries boxes between hub ports and smaller ports that large ships do not call at. Feeders connect regional ports to the long-haul mainline services that link continents.
What is the difference between a feeder vessel and a mother vessel?
The mother vessel, or mainline vessel, sails the long-haul route between major ports. The feeder carries containers between a smaller port and the hub where the mother vessel calls.
Who is responsible for my cargo on a feeder?
On a through bill of lading, the carrier that issued it usually stays responsible for the whole route, including the feeder leg, even when an independent operator runs the feeder ship.