The SS Altariel was a Harmony-class transport in operation during the late 24th century. By the late 2380s, she was owned and commanded by Captain Brian Mallory, a freelance pilot and former smuggler. The vessel was extensively modified from its original template, both before and during Mallory's ownership.

In 2389, Altariel made a stop at the planet Azandria, ferrying Dr. Edram Cale and Romulan refugee Kerav to their new home on Leto Colony. Afterwards, Altariel visited Starbase 185, and would return there numerous times over the next decade. (RPG: Leto Colony, Typhon Station)