What indicates that a torpedo has been fired or is simulated?

The indication that a torpedo has been fired or is simulated is represented by black or green smoke. In naval operations and exercises, the use of colored smoke serves specific purposes to signal certain activities or alerts.

Black or green smoke specifically indicates that a torpedo is involved, whether it has actually been fired or if the situation is being simulated for training purposes. This color coding helps personnel across various vessels and command centers to quickly recognize situations regarding torpedo operations, ensuring that appropriate safety and operational measures are taken.

In the context of naval signals, different colors of smoke signify distinct actions. For instance, white smoke might be associated with various other operational signals, red smoke could indicate a warning or hazard, and yellow smoke often has its own specific meanings in military contexts. However, in terms of identifying torpedo activity, black or green is the recognized standard.