Rescue teams are searching for six missing crew members of a cargo vessel that sank early on Thursday in the Marmara Sea, north-west of Istanbul, said Interior Minister Ali Yerlikaya. The coastguard has dispatched rescue boats and a plane to locate the crew of the ship which is thought to have sunk due to bad weather, Yerlikaya wrote on X, the social media platform formerly known as Twitter. The meteorological agency warned of heavy rain in the Marmara region through Friday. The boat, loaded with marble, was en route from Marmara Island to the north-western province of Bursa’s Gemlik port, Bur…