Action to be taken in case of GPS Failure :-

-
  • Inform Master.
  • Switch over to GPS 2 (If fitted & working).
  • Note down the last position obtained from GPS.
  • Obtain the position of the vessel from Celestial or Terrestrial means.
  • Increase the frequency of position fixing.
  • Plot the position of the vessel in ECDIS.
  • Inform VTS / Port Authority & Company Agent.
  • Monitor the position of vessels in vicinity.
  • Navigate the ship clear from any proximity to navigational hazard.
  • Try to rectify the GPS by referring the GPS Manufacturers Manual.
  • Keep a record of all events.

Effect of GPS Failure:

    •  ECDIS gives mandatory alarm & automatically switches over to DR mode.
    •  Radar and ARPA switches to Relative motion.
    • There are chances that Gyro may give an alarm, Since Gyro has latitude error and which needs GPS Sensor to correct the same.
    • AIS will not transmit position of the vessel.

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