You need to read better next time, they never gave it because we was at war with them and it was being built before war. How can they sink their own ships? If they never gave it.
Nice thread but big big mistakes in information. Janisarries was always but always Turks until there was a lack of troops which would require additional soldiers who then was some Christians.
Also the Turks was one of the first empires starting from seljuks to use gunpowder widely, anyone...