SART radar transponder for location and rescue at sea

The SART radar transponder is a locating device used in emergencies and maritime search-and-rescue operations. It is designed to help units engaged in SAR activities locate a vessel, life raft or people in distress. When interrogated by a compatible X-band marine radar, the device transmits a recognisable response on the radar display, helping rescuers identify the position and head towards the emergency location. The SART radar therefore performs a specific role during the locating phase and complements other equipment dedicated to safety and distress signalling. Versilia Marine Service offers emergency locating devices and carries out their annual inspection, providing support in selecting and managing equipment according to vessel type and intended use.

Weatherdock AG dealer for Italy

Versilia Marine Service is Weatherdock AG’s dealer for Italy, a German company internationally recognised for specialising in the manufacture of radio systems for location and rescue. This partnership enables the company to offer solutions dedicated to safety at sea and search-and-rescue operations, with devices designed to meet specific operational needs in the boating sector. The availability of emergency location systems also makes it possible to assess the most suitable solution according to the type of vessel, equipment already on board and intended use.

RescuePRO floating GPS distress beacon with blue label on water, promoting man overboard alerting.

How the SART radar works and is used

The SART radar transponder responds to signals from a ship’s X-band radar at 9 GHz by generating a characteristic sequence of signals on the rescue unit’s radar display. This enables operators to identify the device’s presence and progressively narrow the search area as they approach.

The SART does not transmit the initial distress alert; it is mainly used at the subsequent stage, when the vessel or liferaft in distress must be located more precisely. It is also important to distinguish it from AIS-SART systems. Both are designed for locating people or craft during emergencies, but they use different technologies: radar SART interacts with X-band radar, while AIS-SART uses the AIS system to transmit information that helps identify the position.

Sale and annual inspection of SARTs

Versilia Marine Service handles the sale and annual inspection of emergency beacons, an important service for monitoring the condition of the devices and their expiry dates. Equipment intended for emergencies may remain unused for long periods and must be kept in the specified condition so that it can perform its function correctly when needed.

Managing the SART radar transponder requires attention to the unit’s overall condition, its battery, the manufacturer’s instructions and any requirements applicable to the vessel. Scheduling inspections and replacements makes it possible to include the device in the maintenance of the vessel’s safety equipment and periodically verify its performance.

Weatherdock AG logo with blue and gray text, radio wave icon, and tagline “Excellence in Radio Technologies”

Contact Versilia Marine Service for information, availability and assistance in choosing the right SART radar transponder for your boat.

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Frequently asked questions

  • What is a SART radar transponder?

    The SART, or Search and Rescue Radar Transponder, is a device used to facilitate location during search-and-rescue operations at sea by interacting with compatible marine radars.

  • What is the difference between a radar SART and an AIS-SART?

    The radar SART interacts with marine radars operating in the X-band, while the AIS-SART uses the AIS system. Both support location in an emergency, but use different technologies.

  • How do you choose a SART for a vessel?

    The choice depends on the type of vessel, its intended use, the equipment already on board and the requirements of the specific operating context.