with the hope of contacting surface rescue workers. Shortly after the collision, a customs ship that was anchored in nearby Eceabat Harbor was alerted to the incident by a small motorboat that had heard the impact. When the customs ship reached the site of the incident, they saw that M/V Naboland had lowered their rescue boats and life jackets to aid any surviving members of Dumlupınar, and were firing flares to alert potential rescue workers in the area. The customs ship took on board the five rescued sailors from Dumlupınar that had not gone down with the submarine, and took them to local hospitals. Three of the hospitalized officers would succumb to their injuries the next day. Nobody on the surface was aware of the level of casualties at the time, and authorities called the submarine rescue ship Kurtaran to the scene to help the remaining sailors. While waiting for Kurtaran, the sun began to rise, the heavy mist started to clear, and the customs ship spotted the emergency communications buoy that had been released by the trapped sailors. Second handsman of the customs ship Selim Yoludüz reached for the phone located inside of the communications buoy and read the inscription on it, which said, "The submarine TCG Dumlupınar, commissioned to the Turkish Navy, has sunk here. Open the hatch to establish contact with the submarine". Following these directions, Yoludüz established contact with the sunken submarine, and was responded to by Lieutenant Selami Özben, who informed Yoludüz that the submarine was leaning 15 degrees to the starboard side after impact with a cargo ship, and that the surviving 22 members of crew were locked away in the stern torpedo compartment with no power or supplies. Yoludüz, in turn, informed Lieutenant Özben that they were in the Nara Bay area of Çanakkale, at approximately 90 meters depth, that the rescue ship Kurtaran was on its way, and that they would do everything they can to rescue the trapped sailors. Kurtaran arrived at the scene at approximately 11:00am on 4 April, about 9 hours after the initial impact, alongside Admiral Sadık Altıncan and Governor Safaeddin Karnakçı. Throughout the ensuing rescue operation, Lt.Özben kept in regular contact with Yoludüz, as well as the Admiral of the Çanakkale Sea Forces Zeki Adar, and the second captain of the sister submarine İnönü I, Suat Tezcan. The rescuers implored the trapped sailors to keep their spirits