The harsh weather hitting the southern African coastline has slashed the number of vessels arriving at the Cape of Good Hope by up to 80% on at least one day last week.
Clarksons reports that just 20 vessels were recorded arriving at the cape on 8 July, the fewest for any single day since at least October.
Only 40 ships were reported to have arrived at the tip of southern Africa on 9 July, before arrivals returned to more normal levels, data from the broker shows.