Colombo's rapid rise as a transhipment hub is heaping cost pressure onto forwarders and shippers on the India-US tradelane, as the Sri Lankan gateway's newfound revenue stream has provoked a worsening tide of congestion.

The timing could hardly be worse for Indian cargo interests. India's major west coast gateways, particularly Mundra and Nhava Sheva, are grappling with congestion of their own, leaving shippers with fewer reliable routing options at exactly the moment when Colombo — the natural relay point for India-US boxes moving on mainline services — is faltering under its new workload.

CH Robinson, one of the largest freight forwarders active on the lane, has flagged the consequences plainly: Colombo's status as a transhipment hot-spot is elevating the risks of rolled cargo for India-US consignments.

"When mainline services omit Colombo to recover schedules, South Asian cargo options become extremely limited," the forwarder cautioned — a warning that captures the core commercial problem now facing the trade.

The mechanics of the disruption are straightforward. Colombo sits at the centre of the Indian subcontinent's deep-sea connectivity: Indian boxes are feedered to Sri Lanka and relayed onto mainline vessels serving Europe and the US. When those mainline strings run late, carriers respond by omitting ports to recover schedule integrity — and Colombo, as a hub call rather than an origin gateway, is an easy omission. Each omission strands transhipment boxes at the terminal and pushes congestion higher, feeding a cycle in which hub popularity and hub reliability pull in opposite directions.

For shippers, the immediate consequence is rollings. Containers booked on India-US services via Colombo face a materially higher probability of being left behind, and every roll adds days of transit time, the prospect of storage and demurrage exposure at congested terminals, and the administrative cost of rebooking. For cargo with tight delivery windows — retail replenishment, automotive components, time-sensitive industrial inputs — the risk now demands buffer stock or premium routing decisions.

Forwarders carry their own burden. CH Robinson's decision to warn clients publicly signals that the issue has moved beyond routine operational noise into territory that requires proactive shipper communication. Forwarders must manage rebooking flows, renegotiate expectations with customers, and in some cases weigh whether alternative routings — direct India-US calls where capacity exists, or transhipment via other hubs — can beat a congested Colombo relay. Each of those options carries its own cost and capacity constraints, particularly with Mundra and Nhava Sheva simultaneously congested.

The irony of Colombo's position is not lost on the market. The port has spent years building throughput on the strength of subcontinent transhipment demand, and that success is now generating the congestion that erodes the reliability on which hub status depends. Carriers, meanwhile, face a balancing act: omitting Colombo protects global schedule integrity but degrades the product offered to Indian shippers, who have few competitive alternatives for US-bound relay.

For carriers themselves, the pattern creates revenue and planning friction. Rolled boxes must be re-accommodated on subsequent sailings, roll-down clauses and free-time extensions eat into margins, and chronic hub congestion complicates capacity planning on a lane where Indian export demand has been a growth story.

What happens next hinges on two trajectories: the pace at which Colombo can absorb its transhipment surge and clear the backlog, and the speed with which Mundra and Nhava Sheva ease their own congestion, which would relieve some of the feeder and routing pressure now funnelling through Sri Lanka. Until either improves, shippers on the India-US lane should treat elevated roll risk via Colombo as a live planning assumption rather than a passing disruption.