Amid a thinning orderbook for Jones Act vessels, the Aker-backed Philly Shipyard said it is in "advanced talks" to build four new containerships for the cabotage trade between the US mainland and Hawaii.

Left out of the announcement, however, was who is buying the ships.

Philly Shipyard says the order is for a new entrant in the US-Hawaii trade, which is currently controlled by Matson and Pasha Group.