Congestion and delay at global ports increased in 2020 second-half, says new data SECTIONS Last Updated: Mar 04, 2021, 11:13 AM IST Share Synopsis Average port-stay for large workloads up by nearly 20 per cent in the second half of the year. US ports especially hard hit but other global ports also suffered sharp declines in performance efficiency in the second half of 2020. iStock Delays at ports are a major headache for cargo owners, disrupting supply chains and adding costs in a range of different ways. LONDON: Congestion at major global seaports spiked in the second half of 2020, with ships requiring the loading and unloading of over 6,000 containers per visit spending an average of over 83 hours in port, a rise of 20 per cent year-on-year, according to the latest Port Performance data from IHS Markit. Global port delays for ships doing smaller workloads were up between 7.8 per cent and 9.5 per cent depending on the call size.