of torpedoes that was originally ordered from Germany in early 1905. Russia soon ordered more submarines of the same basic design, and they were built under contract with the Holland Company by the Neva Shipbuilding Company located in St. Petersburg, Russia. In 1903, the German ship building firm Germaniawerft at Kiel completed Germany's first fully functioning engine powered submarine; Forelle. The submarine was toured inspected by Kaiser Wilhelm II, and Prince Heinrich of Prussia was given a brief cruise in the vessel. In April 1904, the Imperial Russian Navy purchased Forelle, and ordered two more submarines of the . These vessels, as well as Forelle were transported along the Trans-Siberian Railway en route to the war zone. Germaniawerft, under the supervision of Spanish naval architect Raymondo Lorenzo d'Euevilley-Montjustin, continued his work on the Karp-class submarines, improving and modifying one into Germany's first U-boat, , which was commissioned into the Imperial German Navy on 14 December 1906. U-1 was retired in 1919, and is currently on display at the Deutsches Museum in Munich. Due to the ongoing blockade of Port Arthur in 1904, the Imperial Russian Navy dispatched their remaining submarines to Vladivostok, and by the end of 1904 the last of seven subs had reached their new base there. Using the seven boats as a foundation, the Imperial Russian Navy created the world's first operational submarine fleet at Vladivostok on 1 January 1905. On 14 February 1905 the new submarine fleet sent out its first combat patrol consisting of the vessels Som and Delfin. With patrols varying from 24 hours to a few days, the sub fleets first enemy contact occurred on 29 April 1905 when Imperial Japanese Navy torpedo boats fired upon Som, withdrawing after failing to score a hit. On 1 July the Russian submarine Keta made contact with two Japanese torpedo boats in the Tartar Strait. Keta could not submerge quick enough to obtain a firing position and both adversaries broke contact. Battle of Tsushima The Russians had already been preparing to reinforce their fleet the previous year by sending elements of the Baltic Sea fleet (The Second Pacific Squadron) under Admiral Zinovy Rozhestvensky around the Cape of Good Hope to Asia, a voyage of over . On 21 October 1904, while passing by the United Kingdom (an ally of Japan but neutral in this war), they nearly provoked a war in the Dogger Bank incident by