Calypso-class Exfiltration Craft
From Halopedia, the Halo wiki
Template:Ship The Calypso-class Exfiltration Craft is a United Nations Space Command starship classification. These fulfill a purpose similar to Black Cat-class Subprowlers, and were in use in the 2530s, notably in the Battle of K7-49. It appears that Black Cats rendered these ships obsolete. [1]
Trivia
In Greek mythology, Calypso was a daughter of Altas who briefly imprisoned Odysseus during his voyage home. [2]