Global ocean shipping schedule reliability dipped anew, and average delay for late vessels increased, according to the latest report by Sea-Intelligence.

The Danish maritime data analysis company said global shipping schedule reliability declined by -0.9 month/month in August 2023 to 63.2%.

Barring the increase in May, schedule reliability has been ranging within 2 percentage points since March 2023.

Sea-Intelligence added that on a year-on-year level, schedule reliability was 17.0 percentage points higher.

Meanwhile, the report said the average delay for late vessel arrivals increased by 0.07 days month-on-month to 4.67 days.

Despite the month-on-month increase, the average delay for late vessel arrivals is still -1.23 days better off than at the same point last year.

Schedule reliability top 14 carriers

Sea Intelligence said with 70.9% schedule reliability in August 2023, MSC was the most reliable top-14 carrier, followed closely by Maersk and Hamburg Süd with 70.0%.

CMA CGM was the only carrier with a schedule reliability of 60%-70%.

Meanwhile, it added that eight of the remaining carriers had schedule reliability of 50%-60%, with HMM and Yang Ming under 50%; the latter was the least reliable at 47.3%.

"Only 3 of the top-14 carriers recorded a month-on-month increase in August 2023, with OOCL recording the largest increase of 2.8 percentage points," the report said.

On a year-on-year level, all 14 carriers recorded double-digit improvements, with MSC recording the largest improvement of 26.8 percentage points.