Proximity alert

A proximity alert was an alert signal aboard a starship that indicated when another vessel was approaching.

In 2373, Lieutenant Tom Paris was alerted of an approaching Kazon ship vessel by the computer in his shuttlecraft. 

In 2374, Seven of Nine's sensory nodes were being affected by the Mutara-class nebula. She hallucinated that the computer verbally stated that Trajis Lo-Tarik's vessel was approaching the USS Voyager.