The current three-alliance structure in container shipping has been in place since April 2017, when Ocean Alliance and THE Alliance launched alongside the already existing 2M alliance. After nearly 8 years of operations, February 2025 will bring about a new alliance structure. During this 8-year period, the trends in schedule reliability have changed considerably. That said, schedule reliability can be hard to contextualise over longer periods of time, which is why we have created a composite score for each year these alliances have been in operation. (....)