GLOBAL schedule reliability among container shipping lines declined 1.5 percentage point to 76.25 per cent in July, down from June's 77.7 per cent.
Out of the world's top 18 carriers, 11 improved their on-time performance in July compared to the previous month, according to data compiled by SeaIntel Maritime Analysis.
OOCL emerged as the most reliable ocean liner in July with an on-time performance of 85.2 per cent, followed by Evergreen with 84.8 per cent.
But Maersk Line, usually the best on-time performer, with a reliability score of 75.1 per cent and UASC with 75.9 per cent, were the least reliable.
PIL improved the most since June, by 3.3 percentage points, while Hamburg Sud registered the biggest drop of 4.4 percentage points. On a year-on-year basis, only Evergreen achieved an improvement in schedule reliability, albeit of only 0.8 percentage points.
July was the first time ever Maersk Line was found at the bottom of the ranking. Maersk had a stellar on-time performance between July 2011 and March 2015, coming first in 33 of those months.
"The challenge for Maersk Line seems to be seasonal, as they seem to drop in the lower half of the ranking in June-October. It is also likely that the cyber-security incident in late June played a role, as Maersk Line did not update their schedules for several weeks following the incident," SeaIntel said in a statement.
Across the alliances, Ocean Alliance has continued its strong start with further improvements in schedule reliability, reaching 86.2 per cent in July, an improvement of two percentage points compared to the previous month.
2M, which overtook The Alliance, continued its upward trend and improved 5.2 percentage points month on month to reach 81.7 per cent in July. The Alliance recorded two straight months of falling schedule reliability, registering a drop of 1.2 percentage points month on month to 74.0 per cent in July.