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

In 2256, in a binary system on the edge of Federation space, while on a space walk; Commander Michael Burnham's thruster suit's computer voice informed her of a proximity alert, alerting her to the danger of a Klingon torchbearer. ()

In 2259 of the alternate reality, Lieutenant  reported to Captain  that the 's proximity alert had sounded when the  was detected heading right towards the Enterprises location in Klingon space at warp speed. ()

In 2263 of the same alternate reality, Ensign  reported a proximity alert triggered by an unidentifiable "ship", which soon turned out to be an amalgamation of innumerable tiny spacecraft, approaching the Enterprise. ()

In 2373,  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 . ()

See also
Perimeter alert
Proximity alarm

Alerts