The Sith Navy is one of the military branches of the Sith Empire.
Jedi Civil War
The majority of the members that served in the Sith Navy served the Republic, before betraying it and swearing fealty to their new masters, Darth Revan and Darth Malak . Several ships in the Sith Navy were former Republic vessels. The Star Forge, a large Rakatan shipyard, created a significant number of the destroyers and battle droids used by the Sith Navy. With the death of Darth Malak and destruction of the Star Forge, the Sith Navy split into various factions until it banded back together to serve the Sith Triumvirate.