MRC Italeri Schnellboot Typ S-100mong the various stipulations of the Treaty of Versailles in 1919 was a severe limitation of German naval construction. Small craft were not covered by these stipulations and resulted in the development of motor torpedo boats starting in the late 1920s. The design was based on a civil yacht which was, however, modified to be able to transport two torpedoes: The S 1. The evolution of the design continued until it reached, in its most advanced models,