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    Vessels 20 - 75 m

    Type Power source Fundamental frequency, Hz IMO minimum required 1/3 rd octave band level at 1m, db IMO required 
    fundamental 
    frequency, Hz
    AT 150/330 Air-driven 330 130 250-700
    MKT 75/260 Air-driven 260 130 250-700
    MKT 75/350 Air-driven 350 130 250-700
    MKT 75/440 Air-driven 440 130 250-700
    ETD 100/350 Electronic 350 130 250-700

     

    IMO Regulations

     

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    Tyfon signalling, vessels between 20 - 75 m

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    From classic "honks" to complete acoustic systems A Kockum Sonics whistle is not only a high-quality design, it also contains the experience of more than 1 million TYFON® installations! Audibility is determined not simply by the strength of sound emanating from the whistle - much more is entailed to overcome absorption, distortion and local noise.

    Vessels 20 - 75 m

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