Abandon Ship Klaxon
The "Abandon Ship Klaxon" listed under emegerncy procedures
The Abandon Ship Klaxon was an audio alert signal used during an emergency procedure.
Aboard the Y-class Earth Cargo Service freighter ECS Fortunate, signage on a door gave instructions what to do in an emergency situation. It reads that personnel should report to the nearest lifeboat station when the Abandon Ship Klaxon sounds. (ENT: "Fortunate Son")