Ten killed as navy tugboat capsizes while undergoing repairs at a shipyard in Turkey Tugboat called TCG Degirmendere had just finished undergoing repairs But it suddenly listed as it was lowered into the sea at the shipyard in Izmir Eight of those killed were military personnel - the other two were civilians An investigation is underway into what caused the tugboat to capsize Ten people have been killed after a Turkish navy tugboat capsized while docked for repairs at a shipyard on the Aegean coast. Eight people killed in the incident were military personnel while the other two victims were civilians, the Turkish military confirmed today. Seventeen other military personnel were injured and taken to nearby hospitals for treatment. Tragedy: A tugboat capsized in a military shipyard in Izmir, Turkey, on Monday killing ten people The tugboat, called TCG Degirmendere, was being lowered into the sea after maintenance work at the shipyard yesterday when it suddenly listed to one side, taking on water. Six soldiers reportedly only managed to survive by jumping into the sea after control of the tugboat was lost at the shipyard in the Aegean province of Ä°zmir. Dramatic pictures today emerged showing the tugboat on its side in the dock. The cause of the tug boat to capsize is still unknown. An investigation is under way. Capsized: A further 17 military personnel were injured when the tugboat suddenly listed as it was lowered into the sea after maintenance work Probe: An investigation has been launched into what caused the tugboat to capsize at the shipyard