Ottoman Naval Society (Donanma-yı Osmanî Muavenet-i Milliye Cemiyeti) was a national society operating between 1909-1919. During the period, it made a great material and moral efforts for the protection and liberation of homeland. It carried out many economic, commercial, social and cultural activities, especially strengthening the Ottoman navy and as a national society, fulfilled the mission imposed by history successfully. Aka Gündüz (1885-1958), one of the important intellectuals of the National Literature Period (1911- 1923), also stood out with his activist identity, in the years following Second Constitutional Monarchy. Aka Gündüz, who has a nationalist and Turkist line, used his pen fearlessly in the way of the liberation of the Ottoman Empire and the establishment of the new Turkish state. He was also at the forefront in the aid campaigns for the Naval Society in 1910s. In this context, he wrote two ‘open letters’ to Gazi Ahmet Muhtar Pasha and Mehmet Sait Pasha, who were the important statesmen of the period, and he warned both statesmen with a strong tune to make them help the Naval Society.These two open letters dated January 13, 1914 and January 18, 1914 should be considered in the context of the national reflexes that Gündüz displayed during the period. In our study, two open letters of Aka Gündüz, which are historical documents, are given as transcription texts. The letters were dealt with in the context of the events that took place around the Naval Society in 1914 and were evaluated in terms of their characteristics.