Comparing freight rates across modes is the easiest analysis to run and the least useful on its own. A cheaper mode that ties up capital for six extra weeks, or that arrives too late for an installation window, is not cheaper in any sense that matters to the project.
| Air | Sea | Rail (Eurasia) | |
|---|---|---|---|
| Freight cost | Highest | Lowest | Between the two |
| Capital tied up in transit | Days | Weeks | Around half of sea |
| Schedule variance | Low | High — congestion, weather | Moderate — border handovers |
| Cargo limits | Weight, dangerous goods | Few | Gauge and temperature |
| Use it for | Critical path, AOG, high value per kg | Volume, project cargo, anything that can wait | Time-sensitive volume on the corridor |
We work through four questions instead. What is the true landed cost, including duty timing, insurance, handling and inland legs at both ends? What is the working capital consequence of goods sitting in transit, and who bears it under the agreed terms? What is the schedule risk — not the quoted transit but the realistic range, including congestion and customs? And what are the physical constraints of the cargo: dimensions, weight, temperature, dangerous goods classification, and whether it can be split at all.
Answered honestly, those questions frequently produce a split solution — critical path items by air, the balance by sea, with rail carrying the middle ground on Eurasian lanes where it genuinely competes on both time and cost. That is more work to arrange than a single booking. On project cargo it is almost always the right answer.
Harbour Strategies (HK) Limited · 10 March 2026
Editorial commentary by Harbour Strategies. Figures and regulatory details should be verified against primary sources before being relied upon.
