You are most likely to be discovered if you fire a parachute rocket.
It is launched more than 300 meters into the air, and slowly floats downward in a
parachute, while it glows red 30,000 cd – so bright that it can also be seen during the day.
The rocket burns for about 40 seconds, and you can see it up to 5 nautical miles away.
Solas approved GL 0801. Certificate no. of EU type approval 24 277-04 Lux
Application:
You only fire rockets and flares when the ship and crew are in distress. And always wait to fire the final distress signal until it is likely that someone will see it - that is, until you can spot another ship or a helicopter.
