Alarm Signal
The "General Emergency Alarm" consists of 7 short blasts followed by 1 long blast of the ship's horn or whistle (some lines don't sound the signal on the horn or whistle) and by the ship's internal alarm (such as fire alarm bells) accompanied with flashing strobe lights in corridors and public areas for hearing impaired) and PA systems with a tone.
Signal: 7 short and 1 long:
Read more about this topic: Muster Drill
Other articles related to "alarm, alarms, alarm signal, alarm signals":
... Alarm Deactivator As its name suggests, this gadget is used to deactivate alarms ... One end is clipped to where the alarm signal is going in, the other end is clipped to where the matching alarm signal is going out ... The alarm signal is harmlessly re-directed into the Alarm Deactivator, effectively deactivating the alarm ...
... Alarm signals need not be communicated only by auditory means ... For example, many animals may use chemosensory alarm signals, communicated by chemicals known as pheromones ... Minnows and catfish release alarm pheromones (Schreckstoff) when injured, which cause nearby fish to hide in dense schools near the bottom ...
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“Perhaps having built a barricade when you’re sixteen provides you with a sort of safety rail. If you’ve once taken part in building one, even inadvertently, doesn’t its usually latent image reappear like a warning signal whenever you’re tempted to join the police, or support any manifestation of Law and Order?”
—Jean Genet (1910–1986)
“Generally speaking, the political news, whether domestic or foreign, might be written today for the next ten years with sufficient accuracy. Most revolutions in society have not power to interest, still less alarm us; but tell me that our rivers are drying up, or the genus pine dying out in the country, and I might attend.”
—Henry David Thoreau (1817–1862)