Bra'tac's Al'kesh was an Al'kesh used by Bra'tac.
History
When a Ba'al clone captured members of the Jaffa High Council, including Teal'c, and used brainwashing technology on them in an attempt to gain access to the Dakara superweapon, Bra'tac was able to locate the planet where Teal'c was being held. Bra'tac used this Al'kesh to attack the Jaffa guarding the Stargate, so SG-1 and several SG teams could come through the gate and rescue him. After making another strafing run, the ship was shot down by Death Gliders and Bra'tac was taken aboard Ba'al's Ha'tak. (SG1: "Stronghold")