Amar, I.K.S.

Star Trek: The Motion Picture
Episode: MOV 001 - Star Trek: The Motion Picture

On stardate 7412.6, this Klingon battle cruiser was destroyed during its investigation of the immense space-faring, machine lifeform, known as "V'Ger."

This vessel is similar in configuration to the battle cruiser used by the Klingons and the Romulans earlier in the century, as encountered by the U.S.S. Enterprise.