SMS ("His Majesty's Ship Prince-elector Friedrich Wilhelm") was one of the first ocean-going battleships of the German (Imperial Navy). The ship was named for Prince-elector () Friedrich Wilhelm, 17th-century Duke of Prussia and Margrave of Brandenburg. She was the fourth pre-dreadnought of the , along with her sister ships , , and . She was laid down in 1890 in the Imperial Dockyard in Wilhelmshaven, launched in 1891, and completed in 1893. The -class battleships carried six large-caliber guns in three twin turrets, as opposed to four guns in two turrets, as was the standard in other navies.

served as the flagship of the Imperial fleet from her commissioning in 1894 until 1900. She saw limited active duty during her service career with the German fleet due to the relatively peaceful nature of the late 19th and early 20th centuries. As a result, her career focused on training exercises and goodwill visits to foreign ports. These training maneuvers were nevertheless very important to developing German naval tactical doctrine in the two decades before World War I, especially under the direction of Alfred von Tirpitz. She, along with her three sisters, saw only one major overseas deployment, to China in 1900–1901, during the Boxer Uprising. The ship underwent a major modernization in 1904–1905.

In 1910, was sold to the Ottoman Empire and renamed . She saw heavy service during the Balkan Wars, primarily providing artillery support to Ottoman ground forces in Thrace. She also took part in two naval engagements with the Greek Navy—the Battle of Elli in December 1912, and the Battle of Lemnos the following month. Both battles were defeats for the Ottoman Navy. In a state of severe disrepair, the old battleship was partially disarmed after the Ottoman Empire joined the Central Powers early in World War I. On 8 August 1915 the ship was torpedoed and sunk off the Dardanelles by the British submarine with heavy loss of life.

Description

The four -class battleships were the first pre-dreadnought battleships of the (Imperial Navy). Prior to the ascension of Kaiser Wilhelm II to the German throne in June 1888, the German fleet had been largely oriented toward defense of the German coastline and Leo von Caprivi, chief of the (Imperial Naval Office), had ordered a number of coastal defense ships in the 1880s. In August 1888, the Kaiser, who had a strong interest in naval matters, replaced Caprivi with (VAdm—Vice Admiral) Alexander von Monts and instructed him to include four battleships in the 1889–1890 naval budget. Monts, who favored a fleet of battleships over the coastal defense strategy emphasized by his predecessor, cancelled the last four coastal defense ships authorized under Caprivi and instead ordered four battleships. Though they were the first modern battleships built in Germany, presaging the Tirpitz-era High Seas Fleet, the authorization for the ships came as part of a construction program that reflected the strategic and tactical confusion of the 1880s caused by the (Young School).

was long overall, had a beam of which was increased to with the addition of torpedo nets, and had a draft of forward and aft. She displaced as designed and up to at full combat load. She was equipped with two sets of 3-cylinder vertical triple expansion steam engines that each drove a screw propeller. Steam was provided by twelve transverse cylindrical Scotch marine boilers. The ship's propulsion system was rated at and a top speed of . She had a maximum range of at a cruising speed of . Her crew numbered 38 officers and 530 enlisted men.

The ship was unusual for her time in that she possessed a broadside of six heavy guns in three twin gun turrets, rather than the four-gun main battery typical of contemporary battleships. The forward and aft turrets carried K L/40 guns, and the amidships turret mounted a pair of 28 cm guns with shorter L/35 barrels. Her secondary armament consisted of eight SK L/35 and eight SK L/30 quick-firing guns mounted in casemates. s armament suite was rounded out with six torpedo tubes, all in above-water swivel mounts.

was protected with nickel-steel Krupp armor, a new type of stronger steel. Her main belt armor was thick in the central citadel that protected the ammunition magazines and machinery spaces. The deck was thick. The main battery barbettes were protected with thick armor.

Service history

In German service

Construction to 1895 was the fourth and final ship of her class. She was ordered as armored ship D, and was laid down at the (Imperial Shipyard) in Wilhelmshaven in March 1890. She was the first ship of the class to be launched, on 30 June 1891. The ceremony was attended by Kaiser Wilhelm II and his wife, Augusta Victoria. She was commissioned into the German fleet on 29 April 1894, the same day as her sister . While on sea trials, the ship suffered from several problems with her propulsion system. She was therefore decommissioned for repairs to the machinery, before being recommissioned on 1 November 1894. Construction of cost the German navy 11.23 million marks. Upon her commissioning, was assigned to I Division of I Battle Squadron alongside her three sisters. She replaced the ironclad as the Squadron flagship on 16 November, under the command of VAdm Hans von Koester. would remain the flagship for the next six years. I Division was accompanied by the four older s in II Division, though by 1901–1902, the s were replaced by the new s. The ship was a training ground for later commanders in chief of the High Seas Fleet, including Admirals Reinhard Scheer and Franz von Hipper, who both served aboard the ship as navigation officers during 1897 and October 1898 to September 1899, respectively.

After entering active service, and the rest of the squadron attended ceremonies for the Kaiser Wilhelm Canal at Kiel on 3 December 1894. The squadron thereafter began a winter training cruise in the Baltic Sea; this was the first such cruise by the German fleet. In previous years, the bulk of the fleet was deactivated for the winter months. During this voyage, I Division anchored in Stockholm from 7 to 11 December, during the 300th anniversary of the birth of Swedish king Gustavus Adolphus. King Oscar II held a reception for the visiting German delegation, which included Prince Heinrich, the younger brother of Wilhelm II and the commander of the battleship . Thereafter, further exercises were conducted in the Baltic before the ships had to put into their home ports for repairs. During this dockyard period, had her funnels extended in height.

1895 began with what became the normal trips to Heligoland and then to Bremerhaven, with Wilhelm II on board. This was followed by individual ship and divisional training, which was interrupted by a voyage to the northern North Sea. On this trip, was accompanied by her sister ship ; the two battleships stopped in Lerwick in Shetland from 16 to 23 March. This was the first time units of the main German fleet had left home waters. The purpose of the exercise was to test the ships in heavy weather; both vessels performed admirably. In May, more fleet maneuvers were carried out in the western Baltic, and they were concluded by a visit of the fleet to Kirkwall in Orkney. The squadron returned to Kiel in early June, where preparations were under way for the opening of the Kaiser Wilhelm Canal. Tactical exercises were carried out in Kiel Bay in the presence of foreign delegations to the opening ceremony.

On 28 June, an explosion occurred on one of the ship's pinnaces killing seven crewmen and badly injuring the future VAdm Wilhelm Starke. Further training exercises lasted until 1 July, when I Division began a voyage into the Atlantic Ocean. This operation had political motives; Germany had only been able to send a small contingent of vessels—the protected cruiser , the coastal defense ship , and the screw frigate —to an international naval demonstration off the Moroccan coast at the same time. The main fleet could therefore provide moral support to the demonstration by steaming to Spanish waters. Rough weather again allowed and her sister ships to demonstrate their excellent seakeeping. The fleet departed Vigo and stopped in Queenstown, Ireland. Wilhelm II, aboard his yacht , attended the Cowes Regatta while the rest of the fleet stayed off the Isle of Wight.

On 10 August, the fleet returned to Wilhelmshaven and began preparations for the autumn maneuvers later that month. The first exercises began in the Heligoland Bight on 25 August. The fleet then steamed through the Skagerrak to the Baltic; heavy storms caused significant damage to many of the ships and the torpedo boat capsized and sank in the storms—only three men were saved. The fleet stayed briefly in Kiel before resuming exercises, including live-fire exercises, in the Kattegat and the Great Belt. The main maneuvers began on 7 September with a mock attack from Kiel toward the eastern Baltic. Subsequent maneuvers took place off the coast of Pomerania and in Danzig Bay. A fleet review for Wilhelm II off Jershöft concluded the maneuvers on 14 September. went into drydock for periodic maintenance on 1 October. The ironclad temporarily replaced her as flagship until the work was completed on 20 October. The rest of the year was spent on individual ship training, with the exception of a short trip to Gothenburg from 5 to 9 November. Only three other ships accompanied on this visit: the ironclads and and the aviso . On 9 December, the squadron commander shifted his flag to while went into drydock for an overhaul.

1896–1900

The year 1896 followed much the same pattern as the previous year. On 10 March 1896, Koester once again raised his flag aboard . Individual ship training was conducted through April, followed by squadron training in the North Sea in late April and early May. This included a visit to the Dutch ports of Vlissingen and Nieuwediep. Further maneuvers, which lasted from the end of May to the end of July, took the squadron further north in the North Sea, frequently into Norwegian waters. The ships visited Bergen from 11 to 18 May. During the maneuvers, Wilhelm II and the Chinese viceroy Li Hongzhang observed a fleet review off Kiel. On 9 August, the training fleet assembled in Wilhelmshaven for the annual autumn fleet training. Following the conclusion of the maneuvers, again went into dock for maintenance, and while she was out of service, Koester transferred his flag to from 16 September to 3 October. Koester again flew his flag aboard from 15 December to 1 March 1897.

and the rest of the fleet operated under the normal routine of individual and unit training in the first half of 1897. Early in the year, the naval command considered deploying I Division, including , to another naval demonstration off Morocco to protest the murder of two German nationals there, but a smaller squadron of sailing frigates was sent instead. The typical routine was interrupted in early August when Wilhelm II and Augusta went to visit the Russian imperial court at Kronstadt; both divisions of I Squadron were sent to accompany the Kaiser. They had returned to Neufahrwasser in Danzig on 15 August, where the rest of the fleet joined them for the annual autumn maneuvers. These exercises reflected the tactical thinking of the new State Secretary of the , (KAdm—Rear Admiral) Alfred von Tirpitz, and the new commander of I Squadron, VAdm August von Thomsen. These new tactics stressed accurate gunnery, especially at longer ranges, though the necessities of the line-ahead formation led to a great deal of rigidity in the tactics. Thomsen's emphasis on shooting created the basis for the excellent German gunnery during World War I. The maneuvers were completed by 22 September in Wilhelmshaven.