Anschütz Bearing Repeater Compass 133-407 – Complete Marine Technical Guide
Anschütz Bearing Repeater Compass 133-407 – Complete Marine Technical Guide
Product Identification
Manufacturer: Raytheon Anschütz GmbH
Country of Origin: Germany
Product Type: Bearing Repeater Compass
Model: 133-407
Marine Application:
- Gyro Compass Heading Repeater
- Visual Bearing Measurement
- Navigation Support
- Collision Avoidance
- Coastal Navigation
- Pilotage Operations
- Bridge Wing Navigation
The Anschütz Bearing Repeater Compass 133-407 is a precision marine navigation instrument designed to display gyro compass heading while allowing navigators to take accurate visual bearings of ships, buoys, lighthouses, landmarks, and navigation aids.
Product Introduction
Modern vessels depend heavily on electronic navigation systems. However, visual bearings remain one of the most reliable methods of verifying a vessel's position and heading.
The Anschütz Bearing Repeater Compass 133-407 combines:
- Gyro heading information
- Bearing measurement capability
- Navigation verification
- Manual position fixing
The instrument is commonly installed on bridge wings where officers can quickly obtain accurate bearings without relying solely on radar or GPS.
Anschütz Bearing Repeater Compass Systems
What Is This Equipment?
A Bearing Repeater Compass is an extension of the vessel's main gyro compass system.
Unlike a standard repeater compass, it includes a bearing ring that allows navigators to determine:
- Relative bearings
- True bearings
- Target direction
- Shore reference bearings
- Navigational fixes
The heading displayed originates from the vessel's master gyro compass and is continuously transmitted to the repeater unit.
This ensures accurate heading information is available at locations away from the main bridge console.
How Does a Bearing Repeater Compass Work?
The system receives heading information from:
- Master Gyro Compass
- Gyro Distribution Unit
- Heading Converter System
The bearing repeater then:
- Displays vessel heading.
- Maintains synchronized gyro information.
- Allows manual bearing observations.
- Assists navigation officers during maneuvering.
This enables quick verification of vessel position and heading using traditional navigation methods.
Typical Bearing Repeater Installations
Main Features
Precision Gyro Heading Display
Receives accurate heading information from the master gyro compass.
Bearing Ring Assembly
Allows precise bearing measurements.
Bridge Wing Installation
Ideal for port and starboard bridge wings.
Heavy-Duty Marine Construction
Designed for harsh marine environments.
Continuous Synchronization
Maintains real-time alignment with the master gyro.
High Visibility Compass Card
Provides easy reading during day and night operations.
Navigation Verification Tool
Supports independent heading verification.
Long Service Life
Widely recognized for durability and reliability.
Main Components
Compass Card Assembly
Displays heading information.
Bearing Ring
Used for visual bearing measurements.
Gyro Repeater Mechanism
Synchronizes heading information.
Synchro Receiver Unit
Receives heading signals from the gyro system.
Housing Assembly
Provides environmental protection.
Electrical Interface
Connects to the ship's gyro distribution network.
Illumination System
Supports night navigation operations.
Internal and Operational Examples
Technical Specifications
Model
133-407
Manufacturer
Raytheon Anschütz GmbH
Compass Type
Bearing Repeater Compass
Heading Source
Master Gyro Compass
Signal Type
Synchro / Gyro Repeater Input
Installation Location
- Bridge Wing
- Navigation Bridge
- Open Bridge Deck
Function
- Heading Repeater
- Bearing Measurement
Construction
Marine Grade Metal Housing
Environmental Rating
Designed for continuous marine operation
Applications Onboard Ships
Container Ships
Bridge wing navigation support.
Tankers
Pilotage and maneuvering operations.
Bulk Carriers
Visual bearing observation.
Offshore Vessels
Precise heading verification.
Passenger Ships
Bridge wing navigation systems.
Naval Vessels
Navigation and tactical observation.
Common Problems & Troubleshooting
Heading Not Synchronizing
Possible Causes
- Gyro signal loss
- Synchro receiver failure
- Distribution unit fault
Solution
- Verify gyro output
- Check signal wiring
- Inspect synchro circuits
Compass Card Stuck
Possible Causes
- Mechanical obstruction
- Internal bearing wear
Solution
- Inspect moving parts
- Clean internal assembly
- Perform mechanical service
Incorrect Heading Display
Possible Causes
- Gyro error
- Signal calibration issue
Solution
- Compare with master gyro
- Verify synchro alignment
Illumination Failure
Possible Causes
- Lamp failure
- Power supply issue
Solution
- Replace illumination lamp
- Verify electrical supply
Excessive Noise or Vibration
Possible Causes
- Mechanical wear
- Loose mounting hardware
Solution
- Inspect mounting structure
- Check internal bearings
Maintenance Recommendations
Daily
- Verify heading indication.
- Compare with master gyro.
Weekly
- Inspect bearing ring operation.
- Check illumination system.
Monthly
- Inspect housing condition.
- Verify synchronization accuracy.
Quarterly
- Inspect wiring terminals.
- Test gyro distribution signals.
Annual
- Complete mechanical inspection.
- Synchronization verification.
- Electrical system testing.
Why Ships Still Use Bearing Repeater Compasses
Despite modern GPS and ECDIS technology, bearing repeaters remain essential because:
- Independent heading verification.
- Visual navigation support.
- Collision avoidance assistance.
- Pilotage operations.
- Backup navigation capability.
- Compliance with traditional navigation practices.
Many experienced navigators continue to rely on bearing repeaters during restricted waters navigation and harbor approaches.
Frequently Asked Questions (FAQ)
What is the purpose of a Bearing Repeater Compass?
It displays gyro heading and allows navigators to take accurate visual bearings.
Does it work independently?
No. It receives heading information from the vessel's master gyro compass.
Where is it normally installed?
Typically on bridge wings or navigation bridge locations.
Can it be used for position fixing?
Yes. Bearings taken from known landmarks can be used for manual position fixing.
Is it still relevant on modern ships?
Absolutely. It remains an important navigation backup and verification tool.
Short Product Description
The Anschütz Bearing Repeater Compass 133-407 is a professional marine navigation instrument designed to repeat heading information from the vessel's master gyro compass while enabling accurate visual bearing measurements. Widely installed on commercial vessels worldwide, the 133-407 provides reliable navigation support, heading verification, and collision avoidance assistance for bridge officers and navigators.
SM MARINE SERVICE™
Marine Automation & Navigation Equipment Supplier
Available Condition:
- New Equipment
- Used Equipment
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Stock Location:
- Bangladesh
- China
Services:
- Worldwide Shipping
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Contact Information
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Mobile / WhatsApp / Viber: +88 01818 929292
Email: info@smmarineservice.com
Website: www.smmarineservice.com
SM MARINE SERVICE™ supplies Gyro Compass Systems, Bearing Repeaters, Magnetic Compasses, AIS, GPS, Radar, ECDIS, Echo Sounders, Speed Logs, VDR Systems, Marine Automation Equipment, and Navigation Spare Parts worldwide.
User Manual & Technical Resources
Repeater Compass 133-407