De acordo com o Manual de Star Trek: Deep Space Nine , até mesmo a classe Defiant possui essa habilidade , mesmo em uma forma ligeiramente diferente (ao invés de casco do disco provavelmente é melhor falar de primário e casco secundário aqui).
The notched forward hull containing the vessel's navigational deflector and main sensors was a detachable single-use last-resort missile. This missile was equipped with a small impulse engine and a magazine with six torpedo warheads. These torpedo warheads were part of the ship's auto-destruct system and under more normal circumstances could be fired from the forward launcher. Any torpedo warheads left in the magazine would become the missile's warhead upon the missile's separation from the rest of the ship. If no torpedo warheads remained, then the missile would have to rely on kinetic energy alone. The ship would be unable to travel at high warp speeds without the missile since the latter contained the ship's navigational deflector.
Quote from Memory Alpha