Sea Intelligence said there is no link between reliability and freight rates.
In a statement, the maritime analyst noted that it analysed the relationship between the two, looking at whether periods with high schedule reliability resulted in higher freight rates.
"Whenever there is talk of schedule reliability, shippers have complained (and rightly so) about the general lack of service quality in the industry," it said, noting that with this, the debate is whether shippers are at all willing to pay a premium for better schedule reliability.
"We did the analysis across seven port-pairs, using our own schedule reliability data and freight rate data obtained from World Container Index (WCI) ... for nearly all of the port-pairs, we saw that the R-squared value was low, denoting weak to no correlation," Sea-Intel said.
It noted that based on its analysis, the only exception to this was Shanghai-Rotterdam (as shown in figure 1) which means that roughly 63% of the variation in freight rates can be explained by changes in schedule reliability.
"However, the trend line is negative, which means that during periods with high schedule reliability, freight rates were low and vice versa," it added.
"Whilst certainly there can be exceptions for some specific niche carriers and individual shippers, the broad market trend is quite simple in this respect. Reliability tends to improve when there is overcapacity, as this makes it easier to adhere to schedule," Sea-Intel said.
"But this also means high reliability mainly occurs at points in time, where rates are going down and not going up."
The maritime analyst noted that it saw this happen during the pandemic, with schedule reliability going up during the early periods with low demand levels and high blank sailings, and schedule reliability dropping considerably as vessels started to sail fuller and berth congestion rose.
