USS Asterion was a Q-ship of the United States Navy named for Asterion, a star in the constellation Canes Venatici.
The only surviving US Navy photo of the Evelyn/Asterion
AK-101 aka USS Atik, sister ship of the USS Asterion
Q-ships, also known as Q-boats, decoy vessels, special service ships, or mystery ships, were heavily armed merchant ships with concealed weaponry, designed to lure submarines into making surface attacks. This gave Q-ships the chance to open fire and sink them.
British First World War Q-ship HMS Tamarisk
Q-ships hid naval guns behind moveable or pivoting panels
USS Atik (AK-101)
USS Big Horn (AO-45)