SAAB R4 AIS, also known as SAAB R4 A Class AIS, is an Automatic Identification System – AIS Class A system developed by Saab TransponderTech. This is the 4th generation transponder system designed to transmit and receive vessel identification data, position, heading, speed, navigational status, and safety-related messages between vessels or between vessels and shore stations.

SAAB R4 AIS is widely used in the commercial shipping, coast guard, and naval sectors. The device is suitable for vessels requiring a highly reliable AIS Class A system, easy integration with navigation systems, and compliance with professional maritime operational requirements.

The AIS Class A system complies with IMO

SAAB R4 AIS is a fully IMO-compliant Class A transponder, fully implementing standard AIS features in accordance with relevant regulations, recommendations, and specifications.

The system supports the transmission of critical AIS data groups such as dynamic data, static data, voyage-related data, and safety-related messages. This enables vessels to automatically exchange information with surrounding vessels, improving situational awareness, collision avoidance, and maritime traffic management efficiency.

Easy-to-operate multifunction display

A highlight of the SAAB R4 A Class AIS is its multifunction display, which allows operators to track AIS targets, view target vessel data, process alerts, and access safety-related messages.

Flexible display interface allows the device to adapt to various cockpit types, from standalone systems to integrated cockpit systems. Users can operate directly on the display unit without being entirely dependent on external display devices.

Integrated GPS/DGPS, gyrocompass, speed log, and radar

SAAB R4 AIS, capable of integrating with various marine equipment such as external differential GPS receiver, gyrocompass, speed log, chart systems, and radar. This capability allows the system to receive more accurate position, heading, speed, and voyage information.

When connected to radar, ECDIS, or electronic chart systems, AIS data can be displayed synchronously in the cockpit. This helps marine officers easily track target vessels, assess collision risks, and make safe navigation decisions.

Multiple input and output ports

SAAB R4 AIS is designed with a large number of input/output ports, suitable for complex and highly integrated cockpit systems. The device can exchange data with various navigation, monitoring, and display systems.

The expandable connectivity makes the R4 AIS suitable for large commercial vessels, service vessels, naval vessels, and systems requiring stable AIS data in various operating configurations.

AIS Channel Management by Region

SAAB R4 AISallowing easy connection with compatible devices in the cockpit system.channel management capability, including the ability to utilize regional AIS frequencies. This feature is useful for vessels operating internationally or transiting through waters with specific AIS channel management regulations.

Thanks to the channel management function, the system can be more flexible in operation, better meeting the AIS operational requirements of different operating areas.

Integrated pilot plug on the display unit

SAAB R4 A Class AISRX Gain 33.4 dBipilot plug integrated directly on the display unit. This is an important feature when the vessel is docking or navigating in pilotage areas.

The pilot plug allows pilots to connect PPU devices or personal navigation equipment to access the vessel's AIS data. The built-in integration on the display unit reduces loose accessories and simplifies connection procedures.

Supports SRM and text messages

SAAB R4 AIS supports transmission ofSafety Related Messages – SRM as well as regular text messages. These messages help vessels exchange safety information in situations requiring warnings, coordination, or quick notifications.

In addition to standard messages, the system also supports access to safety messages in standard and proprietary formats, depending on configuration.

1W option when handling dangerous goods

A notable feature of the system is its ability to record data related to telegraph demand, engine operation, and propeller operation. This information helps determine the maneuvering commands issued, the response of the propulsion system, and the correlation between control commands and the vessel's actual movement.SAAB R4 AIS, not the complete FELCOM 15 system. The complete FELCOM 15 usually consists of the IC-115 antenna unit, IC-215 terminal unit, junction box, distress/alarm units, and other accessories depending on the configuration.1W transmission power option when handling or transporting dangerous goods. This feature supports specific operational situations where the transmission power needs to be configured according to safety requirements.

Additionally, the system is compatible withSaab Airborne AIS, supportsAIS Class B carrier sense messages and has the capability for future upgrades to support new features.

Suitable for Cruise, Energy, Merchant, and Ferry.

• System SAAB TransponderTech 4th generation Class A AIS.Fully compliant with IMO requirements for shipborne Class A AIS.
• Implements all standard AIS features.Flexible multi-function display, easy to operate.Integrates with external DGPS, gyrocompass, speed log, chart systems and radar.
• Multiple input/output ports for integrated bridge systems.
• Supports area-based AIS channel management.
• Pilot plug integrated on the display unit.
• Supports Safety Related Messages – SRM and general text messages.
• Optional 1W transmission power for dangerous goods handling.
• Compatible with optional 1W power.
• Compatible with Safety Related Messages – SRM và general text messages.
• Có tùy chọn công suất phát 1W khi xử lý hàng nguy hiểm.
• Tương thích với Saab Airborne AIS.
• Support AIS Class B “carrier sense” messages.
• Can be upgraded to support new features in the future.

Benefits of use

SAAB R4 AIS enhances situational awareness by providing real-time AIS data between ship-to-ship and ship-to-shore stations. This allows maritime officers to track target vessels, identify the position, heading, speed, and voyage status of surrounding craft.

Integration with radar, ECDIS, chart systems, GPS/DGPS, gyrocompass, and speed log ensures that AIS data is shared synchronously across the bridge system. This supports watchkeeping, collision avoidance, and more effective maritime traffic management.

The integrated pilot plug allows pilots to easily connect PPU equipment when docking and undocking. Meanwhile, the SRM and text messages features enable swift and secure information exchange between vessels in coordination-critical situations.

The 1W transmission power option, regional channel management, and software upgrade capability makeSAAB R4 A Class AIS suitable for various operating environments, from commercial vessels to service craft and naval applications.

Suitable for

• SOLAS vessels requiring Class A AIS.
• Commercial vessels, cargo ships, container ships, passenger ships.
• Service craft, Coast Guard, and Navy vessels.
• Vessels requiring AIS integration with radar, ECDIS, or chart systems.
• Integrated bridge systems requiring multiple input/output ports.
• Vessels requiring a pilot plug for pilots.
• Vessels requiring support for SRM, text messages, and regional AIS channel management.
• Vessels handling or transporting hazardous materials requiring a 1W transmission power option.
• Project to replace or upgrade old AIS Class A systems.

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What is SAAB R4 AIS?

SAAB R4 AIS is a AIS Class A Transponder system from Saab TransponderTech, used to transmit and receive identification data, position, course and safety messages between ship-to-ship or ship-to-shore stations.

Does SAAB R4 A Class AIS comply with IMO?

Yes. The GN70 has a quick AIS access key and can work within a system with compatible AIS equipment, allowing operators to track AIS target data.SAAB R4 AIS is a fully IMO-compliant Class A transponder system, fully implementing standard AIS features according to relevant regulations and recommendations.

Does SAAB R4 AIS integrate with radar and ECDIS?

Yes. The system can integrate with external DGPS, gyrocompass, speed log, chart systems, radar, ECDIS and integrated bridge systems.

Does SAAB R4 AIS have a pilot plug?

Yes. The pilot plug is integrated on the display unit, allowing pilots to connect PPU or personal navigation devices when the ship enters or leaves the port.

Does SAAB R4 AIS support safety messages?

, along with SmartNet, SmartZone, and Omnilink.Safety Related Messages – SRM and general text messages, helping ships exchange information safely in situations requiring warnings or coordination.

Does SAAB R4 AIS have a 1W transmission power option?

Yes. The system has a transmission power option of 1W when handling dangerous goods. This feature requires verification based on equipment configuration and actual operational requirements.

Does SAAB R4 AIS support AIS Class B carrier sense?

, along with SmartNet, SmartZone, and Omnilink.AIS Class B carrier sense messages and is compatible with Saab Airborne AIS.