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 use a current lawful route for unwanted flares.
Visual distress signals have different jobs. A rocket can alert at range, while a hand flare or smoke signal helps an approaching rescuer 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 depends on 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. Performance figures describe the compliant product, not a guarantee that a particular observer will see it.
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. Never dismantle, test-fire or place unwanted pyrotechnics in ordinary waste.
| Signal | Primary job | Boundary |
|---|---|---|
| Red parachute rocket | Long-range alert | At least 300 m and 40 seconds for the compliant signal 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 directed locating signal instead of automatically firing a long-range rocket.
3. Operate
Follow the 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. Ordinary rubbish, dismantling and practice firing are not disposal routes.
- A published burn time or altitude is a product standard, not a visibility guarantee in the actual weather or sea state.
Recap
- Use rockets mainly to alert at range and hand flares or smoke to help a nearby rescuer locate the casualty.
- Match the signal to visibility and rescue stage; do not treat a performance standard as guaranteed detection.
- Keep pyrotechnics accessible, dry and in date, and dispose of them through a confirmed current route.
Optional quick check
Section 4 of 10
A rescue aircraft is searching close to you in daylight. Which signal is designed to give a conspicuous surface-position cue?
Continue studying Safety
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