Ключевые слова: alarm, alert, amplifier, announce, attention, audio, boat, broadcast, bullhorn, buzz, communication, deck, device, equipment, ferry, guide, industrial, information, loud, loudspeaker, marine, maritime, megaphone, message, metal, military, nautical, noise, power, public, safety, scream, sea, ship, shouting, signal, siren, sound, speaker, speech, steel, talking, transportation, vintage, voice, volume, warning,