SCHEDULE reliability reached a record low in December 2021, according to a recent analysis from Sea-Intelligence.

The latest Global Liner Performance Report suggests schedule reliability is at the lowest it has been since the intelligence company began measuring the data in 2011.

Global schedule reliability slipped to 32% in December, down 1.2% from November, and down 12.5% from the previous year.

“Despite the low schedule reliability in 2021, there hasn’t been much fluctuation, with the global scores hovering between 32% and 40% for the most part,” Sea-Intelligence CEO Alan Murphy said.

“The average delay for late vessel arrivals increased to 7.33 days; the fifth consecutive month with the delay figure above seven days.”


Of the top 14 shipping lines, the analysis identified Maersk as the most reliable carrier in December last year, with a schedule reliability of 46.2%.

Hamburg Süd followed closely behind with a schedule reliability of 41.4%. The only carrier with a schedule reliability between 30% and 40% was MSC.

Hapag-Lloyd, HMM, CMA CGM, ZIM, PIL and ONE each recorded a schedule reliability between 20% and 30%.

COSCO, OOCL, Wan Hai and Evergreen all recorded schedule reliability between 10% and 20%.

Evergreen, which had the least reliable schedule for December last year, recorded a schedule reliability figure of 14.3%.

Mr Murphy said nine carriers had recorded an improvement since the previous month, but no carrier had recorded improvement since the previous year.

All but four carriers recorded double-digit declines since the previous year.