As the ferry was leaving the port on Poland’s Baltic Sea coast at 8.45am on Thursday the vessel collided with a loading crane which tipped and fell.
“She rammed the stern into the leg of the container crane that collapsed,” said Jesper Waltersson at Stena Line.
According to a report in the Aftonbladet daily, three port employees were injured as the crane fell.
According to a statement from polish firm BCT their staff were taken to hospital. Two of the staff are reported to have sustained serious injuries.
The firm advised that the families of the staff concerned have been informed.
Waltersson informed that none of the 49 crew or 120 passengers were physically injured in the collision.
The Stena Spirit had set sail for Karlskrona in eastern Sweden but on Thursday afternoon remained in Gydnia.
BCT said in its statement that an investigation would be conducted into the accident and Stena Line remained uncertain when the vessel would be able to depart.
“We are looking at when we can leave the port and are waiting for the authorities to have their say,” Jesper Waltersson said.