Two crew members of a Greek warship were slightly hurt Tuesday after it collided with a Portuguese cargo ship off Piraeus, the port next to Athens, the navy said. There were 27 sailors on board the minesweeper at the time of the accident, who were rescued by coastguard patrol boats. The two injured were taken to hospital for treatment. The vessel suffered serious damage to the stern and it was towed back to the naval base on the nearby island of Salamina, the merchant navy ministry said. The other vessel involved in the collision was the Maerck Launceston, which flies under a Portuguese flag. An inquiry is under way into the cause of the accident. hec/jj/txw