The Casca Navy was the naval force of a minor star nation located in the Casca System, a member of the Manticoran Alliance. In the 16th Century PD, it was known as the Cascan Defense Force. Until 1533 PD, it consisted of two intra-system units and a hypercapable one. In 1533 PD, the Cascans obtained an Améthyste-class cruiser, the Péridot, from the Republic of Haven. (MA1, MA2)