Module 4 - Safety
Pyrotechnics and Visual Distress Signals
What you will learn
Choose an alerting or locating signal for the visibility and rescue stage, and dispose of expired flares through a current lawful route.
Visual distress signals do different jobs: a rocket can alert at long range, while a hand flare or smoke signal helps rescuers locate the casualty more precisely.
A compliant red rocket parachute flare fired vertically reaches at least 300 metres and burns bright red for at least 40 seconds, making it a long-range alerting signal. A compliant red hand flare burns for at least one minute and helps a known approaching rescuer pinpoint the casualty. A buoyant smoke signal emits highly visible smoke for at least three minutes in calm water and is primarily a daylight locating signal.
A white hand flare is not a recognised distress signal. It can warn another vessel of your presence or a collision risk, but it must not be mistaken for a red distress signal. Signal choice must account for day or night, visibility, whether help is already searching nearby and the vessel's actual carriage requirements.
Read the maker's instructions before an emergency, keep signals dry, accessible and in date, and fire them only when the emergency and chance of detection justify it. Do not dismantle, test-fire or place expired signals in ordinary waste.
HM Coastguard stopped accepting unwanted flares from private individuals in January 2023. Use a confirmed third-party or take-back route such as a supplier, marina, liferaft service, local authority or suitable waste business, and check acceptance before transporting the flares.
| Signal | Primary job | Key distinction |
|---|---|---|
| Red parachute rocket | Long-range alert | At least 300 m and 40 seconds when compliant and fired vertically |
| Red hand flare | Close-range location | Bright red for at least one minute |
| Buoyant orange smoke | Daylight location | Highly visible smoke for at least three minutes in calm water |
| White hand flare | Collision warning | Not a recognised distress signal |
Use the signal that helps the search now
The distress alert has been received and a rescue aircraft is searching nearby in daylight, but it has not yet located the yacht.
1. Confirm
Use radio information and visual contact to judge whether the rescuer is close enough for a locating signal to be useful.
2. Select
Choose daylight smoke or another suitable locating signal rather than automatically firing a long-range rocket.
3. Operate
Follow the exact maker's instructions, keep people clear and continue communications as directed.
Sense check: The best signal is the one the intended rescuer can detect at that stage; firing every signal immediately can leave none for later location.
Common mistake or limitation
- White flares warn of presence or collision risk; they are not substitutes for red distress signals.
- Expired flares remain explosives. HM Coastguard no longer accepts private hand-ins, and neither ordinary rubbish nor practice firing is a disposal route.
Recap
- Use rockets mainly to alert at range and hand flares or smoke to help a nearby rescuer locate the casualty.
- Signal performance figures describe compliant products, not a guarantee that a particular observer will see them.
- Keep pyrotechnics accessible, dry and in date, and dispose of unwanted flares through a confirmed third-party route.
Optional quick check
Section 3 of 6
A rescue aircraft is searching close to you in daylight. Which signal is designed to give a conspicuous surface position cue?
Continue studying Safety
This public lesson is part of Revision Module 4. Full revision access adds the guided Learn, Practise and Test flow, flashcards and revision progress.