of . The shorter barreled L/19 guns had a wider range of elevation, from −8 to 14.5 degrees, but the shorter barrel imposed a lower muzzle velocity, which correspondingly reduced the range of the gun to . The two types of gun fired the same shell, of which the total supply numbered 1,656 rounds of ammunition. The fourteen L/19 guns were placed in a central battery amidships, seven on either broadside. The L/22 guns were placed on either end of the ship to serve as chase guns. Later in her career, six Hotchkiss revolver cannon were added to provide a defense against torpedo boats. Five torpedo tubes were also installed at that time. Two of the tubes were placed in the bow, two on the ship's sides, and one in the stern on the port side. All were placed above the waterline, and were supplied with a total of twelve torpedoes. Friedrich Carls armor consisted of wrought iron backed with heavy teak planking. The waterline armored belt consisted of of iron backed with of teak. Above the belt was a strake of iron plate of the same thickness of the belt, on of teak, which covered the central battery. The battery's roof was protected by iron plating, intended to deflect shots that passed over the side of the ship or fragments from explosions. The ship's conning tower had 114 mm thick iron armor mounted on of teak. Service history The Prussian Navy ordered Friedrich Carl from a French shipbuilder in 1865. She was laid down at the Societé Nouvelles des Forges et Chantiers La Seyne shipyard in Toulon the following year. The ship was launched on 16 January 1867; fitting out work was completed rapidly, and the ship was completed before the end of the year. Friedrich Carl was delivered to Prussia in October 1867 and commissioned into the fleet on the 3rd of the month. Crews for Friedrich Carl and Kronprinz were carried to the ships by the screw frigate and the screw corvette . Both ironclads were laid up without any armament on entering service, as the new guns that had been intended to have been installed suffered serious failures during testing in 1867–1868; the Kreiner breech blocks proved to be prone to failure and so Krupp-designed guns were installed instead, with the work completed by July 1869. in June 1870, Friedrich Carl collided with the Danish schooner