His Majesty's Ship

His (or Her) Majesty's Ship, abbreviated HMS and H.M.S., is the ship prefix used for ships of the navy in some monarchies. Derivative terms such as HMAS and equivalents in other languages such as SMS are used.

Seal of the Imperial German Navy (1871–1919) - (Mirrored) - Kommando S.M.S. Braunschweig