Which device is designed to provide both daytime orange smoke and nighttime red flare?

Which device is designed to provide both daytime orange smoke and nighttime red flare?

• A. MK-79 signal kit
• B. MK-124 day/night pyrotechnic device
• C. Distress signal light
• D. Signal mirror

Answer: (B)

Signaling in maritime emergencies often needs visibility in both day and night. A day/night pyrotechnic device is designed to meet that need by delivering two distinct effects in one package: orange smoke during daylight for high-contrast daytime signaling, and a red flare at night for strong nighttime visibility. This dual capability makes it the best choice when you want a single device to cover both conditions, reducing gear and ensuring a clear, sustained distress signal as conditions change. Other options don’t provide that combination. A distress signal light is useful at night with a bright beacon but doesn’t produce daytime orange smoke. A signal mirror relies on sunlight for daytime signaling and offers no smoke or flare. A single-function flare, like a typical night flare, works for night but has no daytime smoke signal. The day/night device specifically pairs both effects, which is why it’s the correct choice.

Signaling in maritime emergencies often needs visibility in both day and night. A day/night pyrotechnic device is designed to meet that need by delivering two distinct effects in one package: orange smoke during daylight for high-contrast daytime signaling, and a red flare at night for strong nighttime visibility. This dual capability makes it the best choice when you want a single device to cover both conditions, reducing gear and ensuring a clear, sustained distress signal as conditions change.

Other options don’t provide that combination. A distress signal light is useful at night with a bright beacon but doesn’t produce daytime orange smoke. A signal mirror relies on sunlight for daytime signaling and offers no smoke or flare. A single-function flare, like a typical night flare, works for night but has no daytime smoke signal. The day/night device specifically pairs both effects, which is why it’s the correct choice.