GuardianSCL derives heading from GNSS rather than from a spinning mass, so there is no settling time and no drift to compensate. Heading and satellite speed over ground are presented clearly, and the functions are selected to suit the installation.

The antenna derives heading from the satellites it tracks, so the direction the vessel is pointing comes from the same source as her position.

The direction she points and the direction she travels are rarely the same. Both are presented, so the difference between them is visible rather than inferred.


Heading and speed leave the antenna as sentences compatible bridge equipment already understands, so existing displays keep their familiar readings.





GuardianSCL combines GNSS-derived vessel heading and satellite speed-over-ground information to give bridge teams a clearer understanding of orientation and movement. Heading, course and speed describe different aspects of navigation. The selected GuardianSCL configuration can be matched to compatible receiving equipment and vessel integration requirements.
Display | 5” capacitive touch display with AG/AF coating
Antenna | GuardianSCL, dual-element, multi-band
Power | 12-24 V DC, dual DC power inputs with automatic redundancy and power failure alarm
Environment | -20 °C to +70 °C, compass safe distance 1.30 m standard / 0.85 m steering
Network | PoE PD / LAN
Connector | M12, RS-422 and DC power
High-speed NMEA | 4 × configurable NMEA 0183 ports, input or output
BAM interface | Full-duplex NMEA port for the Bridge Alert Management network
Dry-Contact | One dry-contact ss-relay interface
USB | USB-C, for backup and software updates
1 × GNSS Compass Antenna
GuardianSCL, dual-element, multi-band
1 × NetBlink Repeater Display
NetBlink 5100 (5-inch)
1 × Display Mounting Bracket
DBRT, deck or flush mount
1 × Antenna Mounting Kit
Deck or pole mount, stainless steel
1 × Antenna Cable
Standard length, longer runs available
Configured on delivery
Compass and speed-log functions and the output interfaces are set for the installation
Also supplied
Quick-start card, digital-manual QR card and the installation manual
Bridge navigation, manoeuvring support and integration with compatible vessel systems.
