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This page contains information regarding Star Trek: Picard, and thus may contain spoilers.

For the prime universe counterpart, please see La Sirena.

CSS La Sirena (NCC-93131) was a Kaplan F17 Patrol Frigate that served the Confederation of Earth under the command of Colonel Cristóbal Rios during the early 25th century.

In 2401, the La Sirena and several other Patrol Frigates were involved in an attack on Vulcan forces in orbit of Vulcan. Captain Cristóbal Rios suddenly found himself aboard this ship in the middle of battle, just in time to see Confederation forces bombarded the planet. (PIC: "Penance")

La Sirena was subsequently recalled to Earth by Seven of Nine under the guise of Confederate President Annika Hansen. (PIC: "Penance") Hansen, Rios, and other associates of Jean-Luc Picard stole La Sirena, as well as the captive Borg Queen, and performed a slingshot maneuver to travel back in time to 2024, where it subsequently crash landed near Château Picard. (PIC: "Assimilation")

To avoid detection while on Earth, the ship was concealed by its cloaking device. (PIC: "Watcher")

This ship's class and registry was later revealed in a tweet by Dave Blass. [1]