SMS Hessen was the third of five pre-dreadnought battleships of the Braunschweig class. She was laid down in 1902, was launched in September 1903, and was commissioned into the German Kaiserliche Marine in September 1905. Named after the state of Hesse, the ship was armed with a battery of four 28 cm (11 in) guns and had a top speed of 18 knots. Like all other pre-dreadnoughts built at the turn of the century, Hessen was quickly made obsolete by the launching of the revolutionary HMS Dreadnought in 1906; as a result, she saw only limited service with the German fleet.

SMS V190 was a S-138-class large torpedo boat of the Imperial German Navy. She was built by the AG Vulcan shipyard at Stettin between 1910 and 1911, completing on 5 August 1911.