The Litton Marine Systems 4891-AD is a Universal Digital Repeater (UDR) / Digital Gyro Repeater used in marine navigation systems. It displays vessel heading information received from a gyrocompass or compatible heading source and can also be used with C. Plath/Sperry Marine navigation equipment.
Features
- Digital display of vessel heading
- Designed as a Universal Digital Repeater
- Suitable for gyrocompass heading repetition
- Provides heading information at remote vessel locations
- Can be integrated into marine navigation systems
- Available in console and protected housing configurations
- Suitable for bridge and navigation-console installation
- Compact marine electronic instrument
- Designed for continuous heading monitoring
- Compatible with legacy Litton / C. Plath / Sperry Marine navigation installations
Typical Applications
- Gyrocompass heading indication
- Vessel heading repetition
- Bridge navigation consoles
- Bridge-wing heading displays
- Steering control stations
- Magnetic-compass heading systems
- Autopilot-related heading monitoring
- Marine navigation systems
- Ship manoeuvring stations
- Replacement/refurbishment of legacy Litton/C. Plath navigation equipment





























