AP Moller-Maersk wants to force a customer into arbitration, while customer U Shippers wants the US Federal Maritime Commission to resolve a dispute that could be worth $180m.

The Danish container ship giant sued in the US federal court for the Eastern District of New York on Monday to force the Brooklyn-based shipper association to continue with the arbitration process it started in May, before abandoning it to file a complaint with the FMC in August.

“U Shippers’ arbitration demand to Maersk acknowledges that [U Shippers’] breach of contract claims against Maersk are arbitrable under the parties’ service contract … and therefore the FMC lacks subject matter jurisdiction,” Maersk said in the lawsuit.