Submarine sonar in ASCII art

ASCII art generated on ascii.co.uk for:
“submarine sonar”

                 . - - = = = = - - .
             . =                     = .
          . =        . - = = = - .        = .
        =       . =               = .       =
      =      . =        _____        = .      =
     =      =       . -'     '- .       =      =
    =      =      =      . o .      =      =      =
   =      =      =    . -'   '- .    =      =      =
   =     =      =    =    ( O )    =    =      =     =
  =      =      =    =   .-' \'.   =    =      =      =
  =      =      =     =  '.   /.'  =     =      =      =
  =      =      =      = .  \|/  . =      =      =      =
  =      =      =       =._./|\._.=       =      =      =
  =      =      =          '- | -'          =      =      =
  =      =      =            '|'            =      =      =
   =     =      =    . _______|_______ .    =      =     =
   =      =      =  =  '- . _ | _ . -'  =  =      =      =
    =      =      =        '-|-'        =      =      =
     =      =       . -.____|____.- .       =      =
      =      . =        '- | -'        = .      =
        =       . =       '|'       = .       =
          . =        . - =|= - .        = .
             . =          |          = .
                 . - - = = | = = - - .
                          '
ascii.co.uk
✨ Create your own ASCII art · Browse the gallery