Sea-Intelligence: Global Schedule Reliability ‘Stagnates’ Around the 65% Mark in September

The latest report from Sea-Intelligence shows that global vessel schedule reliability was nearly unchanged at 65.2% in September 2025. Maersk continues to lead the carriers, while the Gemini Cooperation maintains its outstanding performance.

Maritime analysis firm Sea-Intelligence has just published issue 170 of its Global Liner Performance (GLP) report, with schedule reliability figures through September 2025.

According to the report, global schedule reliability was nearly flat in September 2025, recording only a slight month-on-month (M/M) improvement of 0.1 percentage points to reach the 65.2% mark. This is the second-highest figure for a September in the 2019-2025 period. Nevertheless, when compared year-on-year (Y/Y), this figure was still 14.7 percentage points higher.

The average delay for late vessel arrivals was unchanged from the previous month, at 4.88 days.

Among the carriers, Maersk continued to be the most reliable of the top 13 with a schedule reliability of 77.0%, followed by Hapag-Lloyd at 73.6%. Five carriers had ratings between 60%-70%, and another five were in the 50%-60% range. Wan Hai was the only carrier with a rating below 50%, recording the lowest reliability in September at 47.9%.

Alliance Performance: Gemini Still Leads

Sea-Intelligence continues to use two methods to measure the performance of the alliances: “All arrivals” (which includes all port calls, including the port of origin on East/West trades) and “Trade arrivals” (which only includes port calls in the destination region, similar to the old methodology).

During the August-September 2025 period, the alliances recorded the following results:

• • Gemini Cooperation led with outstanding performance, achieving 89.1% on the “All arrivals” index and 86.4% on the “Trade arrivals” index.
  • MSC came in second with 79.9% (“All arrivals”) and 84.1% (“Trade arrivals”).
  • Ocean Alliance (the former alliance) scored 68.6%.
  • Premier Alliance recorded 58.2% (“All arrivals”) and 59.9% (“Trade arrivals”).

Source: Phaata.com (According to Sea-Intelligence)

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