The S-100 was a German high-speed torpedo boat of the S-100 Schnellboot sub-class. Ordered to be built at the Lürssen shipyard in Bremen-Weser in 1941, it was only complete and entered service on May 5, 1943. The S-100 was the first in the Schnellboot to receive an improved armored wheelhouse and a more powerful engine. Other modernizations were carried out based on experience operating the boats during the war, including moving the flagpole and reinforcing the artillery armament. The S-100 itself served for just over a year and was sunk by British bombers during a raid on Le Havre on June 14, 1944.

The S-100 was introduced in Update 1.77 "Advancing Storm". It carries powerful artillery, has excellent speed and maneuverability, but suffers from low survivability because of its wooden hull.