The Coral Princess this week was blocked from calling in Costa Rica for a third time by fishermen protesting new regulations.

A spokesperson for Princess Cruises tells USA TODAY the 1,970-passenger vessel once again had to turn away from the Costa Rican port of Puntarenas after fishermen in industrial fishing boats barred the entrance. The fishermen are protesting a law that bans shark finning — the practice of removing the fins of sharks while still at sea.

Princess’ Julie Benson says the line has sent a letter to the Costa Rican Minister of Tourism expressing its concern over the recurring incidents. “We have have been in ongoing discussions with Costa Rican officials on this issue and are hopeful it can be resolved with no further disruption to our calls there,” she says.

The incidents come in the wake of unrelated protests on the island of Roatan, Honduras, that have caused several ships there to miss port calls in recent months.