A cocktail of factors will keep container freight rates high for at least the first half of the year, meaning the sector will earn more than expected, according to HSBC Global Research analysts.

The Hong Kong-based team believes that upward revisions of earnings estimates are "inevitable" due to "the new reality that supply chain congestion could stay with the sector for longer than expected".

Congestion is expected to persist at least for the first half of 2022, the analysts argue.