Schedules are being thrown into disarray by worsening port congestion, with the ability of lines to maintain schedule integrity slipping by 7.6% to stand at 72.2%, according to SeaIntel figures.

The primary problem remains heavy congestion in the ports of Los Angeles, Long Beach and other locations on the US West Coast (USWC).Such issues have led to service reliability in the transpacific eastbound trades falling in 2014 by 17.5%