# Sea-Intelligence: Global Schedule Reliability Records a Marginal Gain in September

- **Source:** https://pelavox.com/sea-intelligence-global-schedule-reliability-records-a-marginal-gain-in-september/
- **Publisher:** pelavox. (The voice of shipping)
- **Author:** Helena Pierce
- **Published:** 2026-10-29T08:00:00+00:00
- **Updated:** 2026-10-28T20:01:27+00:00
- **Section:** Markets
- **Type:** News
- **Topics:** Sea-Intelligence

Sea-Intelligence has published issue 182 of the *Global Liner Performance (GLP) report*, with schedule reliability figures up to and including September 2026.

Schedule reliability improved by 0.9 percentage points M/M in September 2026 to 50.6%. The marginal improvement comes after three consecutive M/M drops, with an aggregate drop of ‑14.8 percentage points, from a peak of 64.5% in May. The average delay of late vessel arrivals also improved, decreasing by ‑0.30 days M/M to 6.65 days. Despite this improvement, the average delay for late vessel arrivals in September 2026 is the second‑highest figure for the month.

![Sea-Intelligence: Global Schedule Reliability Records a Marginal Gain in September](https://pelavox.com/wp-content/uploads/2026/10/image-3.webp)

Maersk was the most reliable top‑13 carrier in September 2026 with schedule reliability of 64.8%, followed by Hapag-Lloyd with schedule reliability of 60.4%. MSC and CMA CGM followed with 57.7% and 51.8%, respectively. Wan Hai was the least reliable carrier with schedule reliability of 26.7%. Ten carriers recorded a M/M improvement in schedule reliability in September 2026, with ZIM recording the largest M/M improvement of 4.7 percentage points. On the other end, Maersk recorded the largest M/M decline of ‑1.8 percentage points. On a Y/Y level, none of the 13 carriers recorded an improvement in schedule reliability in September 2026, with PIL recording the largest Y/Y decline of ‑27.3 percentage points. PIL was one of twelve carriers with a double-digit Y/Y decline.

![Sea-Intelligence: Global Schedule Reliability Records a Marginal Gain in September](https://pelavox.com/wp-content/uploads/2026/10/image-1-1.webp)

In August/September 2026 MSC was the most reliable carrier alliance with schedule reliability of 68.9%, followed by Gemini with 68.4%, and Ocean Alliance with 44.8%. Premier Alliance was the least reliable carrier alliance with schedule reliability of 41.5%.

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Cite as: "Sea-Intelligence: Global Schedule Reliability Records a Marginal Gain in September", pelavox., 29 October 2026, https://pelavox.com/sea-intelligence-global-schedule-reliability-records-a-marginal-gain-in-september/