3] An interesting position is that shown in Fig.

4, which may be assumed by _A_, either for flight, or to get the advantage in torpedo fire.
The advantage is that the _A_ ships are running away from torpedoes fired by _B_, while _B_ is running into torpedoes fired by _A_.
This advantage is not great if the distance between _A_ and _B_ is so little that _B's_ torpedoes can reach _A_.

But if _A_ is able to make this distance equal to the entire range over which _B's_ torpedoes can run, or near it, _B's_ torpedoes cannot reach _A_ at all.
[Illustration: Fig.

4] A similar advantage, though in a modified degree, is that shown as possessed by _A_ in Fig.5.Due to the direction of movement of the _A_ and _B_ fleets, it is easier for _A's_ torpedoes to reach _B_, than for _B's_ torpedoes to reach _A_.
[Illustration: Fig.

5] Positions of advantage are usually gained by superior speed.