sentences:  She was launched on 22 March 1900; the ship's namesake, Prince Heinrich of Prussia, was present at the ceremony, and the "Generalinspekteur der Marine" (General Inspector of the Navy), Admiral Hans von Koester, gave a speech.The ship was completed just under two years later, on 11 March 1902.She then began sea trials that lasted until June, at which point she joined the reconnaissance forces attached to I Squadron.