Class 2 signal

A class 2 signal is a type of communique used between starships where the sending ship requests the surrender of the receiving ship.

After the USS Enterprise (NCC-1701) became surrounded in the Romulan Neutral Zone by three Romulan battle cruisers, Subcommander Tal of the Romulan flagship sent the Enterprise a class 2 signal, stating, "you will surrender immediately, or we will destroy you."

After the disappearance of the IKS Klothos in the Delta Triangle, Kuri, the commander of one of her sister ships, sent a class 2 signal to the USS Enterprise demanding their surrender.