Countermeasures.
If being tracked by torpedoes that tracked using sonar, sending something out that would make noise or reflect the sonar instead of the submarine would be a countermeasure.
A B-52 flying around might throw out flairs as countermeasures to divert a heat-seeking missile.
But countermeasures don't work on laser-guided missiles. Unless the laser itself is interfered with, nothing can send a missile off course.
Getting into space, your countermeasures are going to depend on the tracking mechanism of the missile/torpedo. The nukes of Artemis have no tracking ability, they just go in a straight line, so countermeasures would have no effect. The guided missiles and drones could be affected by countermeasures.
So, for Artemis, the weapons console could have the function. The captain could say, "Deploy countermeasures," and the weapons officer deploys them, which for a few seconds would distract any drones or torpedoes that have targeted Artemis. But if those drones or torpedoes are still active and can re-acquire Artemis after the countermeasures dissipate, then they could resume a trek to Artemis.
Food for thought.