F and G type "Secomak" whistles, developed by Service Electric Co; F whistle was installed in Messageries Maritimes flagship, La Marseillaise, in 1950; smaller type G produced for use on diesel engined warship; principle is based on rotary type of siren, and all working parts are completely enclosed to protect them from moisture; sound rotor or impeller rotates inside stator. (see also Shipbldg and Shipg Rec v 81 n 23 June 4 1953 p 732)


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    Title :

    Marine electric for ocean-going ships


    Additional title:

    Engineering


    Published in:

    Engineering ; 175 , n 4558


    Publication date :

    1953


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :