Cobham SAILOR SART II (End of Life)


NOTICE – Cobham  announced February 2020 that SAILOR SART II is nearing EOL (End of Life).  Mackay will continue to sell Replacement Batteries for the SART II (OTC Request Form)


Jotron SART20 (same functionality)
Cobham AIS-SART 5052
Others (see Product Referral – this page)

The Cobham SAILOR SART II (End of Life), is a 9 GHz X-band radar transponder, specifically designed for assisting rescue operations and is in full compliance with IMO GMDSS requirements. Compact and ease-of-use is reassuring in critical situations.

When a radar signal is received from a vessel or aircraft, the SAILOR SART II automatically transmits a response signal, clearly identifying the survival craft on the radar screen. Once activated, the SAILOR SART II will remain in standby-mode for over 96 hours, 8 hours minimum active transmission.

SAILOR SART II is used to locate a survival craft or distressed vessel by creating a series of dots on a rescuing ship’s radar display. When in standby mode the SAILOR SART II is triggered by any X-band radar within a range of approximately 8 nautical miles. The SAILOR SART II automatically transmits a response signal which is swept across the complete radar frequency band, and clearly identifies the survival craft.

The signal is made up of a stream of 12 in-line dots. At some point in each sweep, the SAILOR SART II frequency will match that of the interrogating radar and will produce a response on the radar display, thus a line of 12 dots equally spaced by about 0.64 nautical mile will be shown. Once activated, the SAILOR SART II will remain in standby mode for over 96 hours.

A SART will only respond to a 9 GHz X-band (3 cm wavelength) radar. It will not be seen on S-band (10 cm) or other radar.



  • Vessel or survival craft options
  • Waterproof to 10 m
  • Maintenance free with built-in test facility
  • Replaceable, 5 year battery pack
  • Audio/visual indication of operation
  • Integral lanyard
  • Internal and external mounting options available

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