Stuck at sea
The containers stuck on board the ships are the next problem. While at sea, there is no way to get the cargo off board.
Ships that are only leased by Hanjin could see their actual owner take back control and bring them into a harbour. They would still need to be cleared of their cargo but could then be leased to other companies.
Given that the owners of any leased vessels would probably not want to foot the bill themselves they may try to draft in the four partner lines that have containers on the ship or maybe even the companies whose cargo is inside those containers
The ships owned by Hanjin itself would most likely have to be sold before anyone would bring in the money to get them into a port and cleared. The fact that they would have to be sold as is, i.e. at sea, and with a load of overdue containers on board would probably weigh down the price of the vessels.