§ 80.307   Compulsory use of radiotelegraph auto alarm.

   The  radiotelegraph auto alarm required on a cargo ship subject to the
   radiotelegraph provisions of part II of title III of the Communications Act
   or the Safety Convention must be in operation, connected to the main antenna
   and adjusted for optimum efficiency at all times while the ship is being
   navigated in the open sea when a radio officer is not listening on the
   frequency  500  kHz,  except  under  the circumstances as set forth in
   § 80.306(b).

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