GYROCOMPASS
Teledyne TSS / S.G. Brown heritage
Refurbished
The Meridian Gyrocompass is a high-accuracy marine heading reference system originally associated with S.G. Brown / TSS and now supported within the Teledyne TSS marine navigation product heritage.
The supplied photograph shows two Meridian gyrocompass units displaying a heading of 213.1°. One unit is visibly marked Meridian Surveyor / Teledyne TSS, while another carries Meridian / S G Brown branding. A matching illuminated Meridian repeater is also visible.
The Meridian range was designed for modern integrated bridge systems and can operate as a stand-alone gyrocompass or as part of single, dual or triple gyro configurations with repeaters and ancillary equipment.
Manufacturer / Brand: Teledyne TSS / S.G. Brown heritage
Country of Origin: United Kingdom heritage
Product Family: Meridian Gyrocompass
Models Covered: Meridian Standard and Meridian Surveyor
Product Type: Digital Marine Gyrocompass / True Heading Reference System
Marine Application: Accurate true heading supply for bridge navigation systems
Associated Equipment: Meridian repeaters, remote control units, interfaces and changeover systems
A gyrocompass provides a vessel with true-north-referenced heading information independently of the Earth's magnetic field.
The Meridian range was designed to provide high-accuracy heading information to navigational equipment including:
• Radar
• ECDIS
• Autopilot
• AIS
• VDR / S-VDR
• Heading repeaters
• Integrated bridge systems
• Dynamic positioning or survey systems where applicable
Teledyne describes its gyrocompass/navigation systems as providing reliable true heading information with flexible integration into marine navigation networks.
The Meridian Standard is designed as a compact, reliable gyrocompass for conventional commercial marine navigation.
Published Teledyne information gives the Meridian Standard:
Static Heading Accuracy: approximately 0.10° secant latitude RMS
Dynamic Heading Accuracy: approximately 0.30° secant latitude RMS
The system can settle in less than 45 minutes, which helps reduce startup time compared with many older conventional gyrocompass systems.
The Meridian Surveyor is the higher-performance member of the Meridian family.
It uses a Dry Tuned Gyro (DTG) element, providing excellent heading stability while avoiding the routine maintenance requirements associated with some traditional spinning-mass gyrocompasses.
Published specifications give:
Static Heading Accuracy: approximately 0.05° secant latitude RMS
Dynamic Heading Accuracy: approximately 0.20° secant latitude RMS
This higher accuracy makes the Surveyor especially attractive for survey craft, offshore work and vessels requiring precise heading information.
• Digital marine gyrocompass
• True-north heading reference
• Compact physical design
• Fast settling time under 45 minutes
• Stand-alone installation capability
• Single, dual or triple gyro arrangements
• Digital and analogue outputs
• Self-test and setup functions
• Remote control capability
• Suitable for retrofit installations
• Low routine maintenance requirements
• Compatible with Meridian repeaters and ancillary equipment
• Suitable for integrated bridge systems
Teledyne notes that the Meridian can also be used as a retrofit replacement for many existing gyrocompasses, which is useful when upgrading older bridge installations.
Static Accuracy: 0.10° secant latitude RMS
Dynamic Accuracy: 0.30° secant latitude RMS
Static Accuracy: 0.05° secant latitude RMS
Dynamic Accuracy: 0.20° secant latitude RMS
Less than 45 minutes under specified operating conditions.
The exact interface, supply and environmental specifications depend on the specific Meridian version and system installation, so the applicable system manual should always be checked before replacement or commissioning.
A typical Meridian gyrocompass installation may include:
• Meridian Standard or Surveyor Main Gyro Unit
• Control / Display Unit
• Meridian Heading Repeater
• Bearing Repeater
• Remote Control Unit
• Power Supply
• Interface Electronics
• Digital / Analogue Output Connections
• Changeover System for dual or triple gyro installations
• Cables and connectors
• Internal electronic modules
• Dry Tuned Gyro element in applicable Surveyor systems
The image supplied by SM MARINE SERVICE™ clearly shows main Meridian gyrocompass units and a separate heading repeater.
The Meridian family can be used aboard:
• Cargo Ships
• Bulk Carriers
• Container Ships
• Tankers
• LNG/LPG Carriers
• Offshore Support Vessels
• Survey Vessels
• Research Vessels
• High-Speed Craft
• Merchant Ships
• Specialized Marine Platforms
The higher-performance Meridian Surveyor is particularly suited to applications requiring very stable heading information, including hydrographic and geophysical survey operations.
The gyrocompass acts as a central heading source for many bridge systems.
Typical consumers of Meridian heading information can include:
Autopilot – automatic steering requires accurate heading feedback.
Radar / ARPA – heading is necessary for target stabilization and true-motion functions.
ECDIS – vessel heading is used for chart orientation and navigation presentation.
AIS – heading information may be provided to the AIS system.
VDR / S-VDR – heading information may be recorded as part of voyage data.
Repeaters – remote indicators reproduce gyro heading at different bridge locations.
Check power supply, internal connections, control/display electronics and communication with the gyro unit.
Compare the Meridian indication with another known heading reference. Check system settings, latitude/speed information where applicable, interfaces and commissioning parameters.
Inspect power quality, gyro operating status, wiring and system configuration. Persistent instability may require specialist gyrocompass diagnosis.
Check the repeater interface, digital/analogue heading output, wiring and repeater calibration/configuration.
Check the relevant Meridian output channel, interface configuration, cabling and receiving equipment input settings.
Verify startup conditions, supply voltage and system status. The Meridian normally has a relatively fast settle time, so unusually long initialization should be investigated.
Inspect interface cables, connectors and output configuration before replacing the main gyro unit.
• Keep the gyrocompass and electronics dry and clean.
• Inspect ventilation openings.
• Check power-supply quality.
• Inspect cables and terminal connections.
• Compare main gyro and repeater indications regularly.
• Verify heading outputs to radar, ECDIS and autopilot.
• Use built-in self-test functions where appropriate.
• Avoid unnecessary internal adjustment without technical documentation.
• Maintain a backup heading source aboard critical installations.
One advantage of the Meridian design is its comparatively low maintenance requirement. Teledyne has highlighted long-term installations where the gyro operated for years without routine engineer maintenance.
SM MARINE SERVICE™ can support sourcing of Teledyne TSS / S.G. Brown Meridian gyrocompass equipment and replacement parts, depending on availability.
Typical requirements may include:
• Complete Meridian Standard Gyrocompass
• Complete Meridian Surveyor Gyrocompass
• Main Gyro Unit
• Control / Display Unit
• Meridian Repeater
• Bearing Repeater
• Remote Control Unit
• Interface Electronics
• PCB / Electronic Board
• Power Supply Components
• Gyro Element / Internal Sensor Components
• Cables & Connectors
• Changeover System Components
• Internal Electronic Parts
Available equipment may include:
New • Used • Tested Working • Refurbished • Reconditioned
For older vessel installations, a correctly matched replacement Meridian unit or repeater can be more economical than replacing the entire heading-distribution system.
The Meridian became popular because it combines compact size, fast settling, reliable heading accuracy and flexible interfaces.
It can also be installed as part of redundant single, dual or triple gyro systems and used for retrofit replacement of older gyrocompasses.
The Meridian Surveyor's DTG technology additionally reduces routine mechanical maintenance requirements compared with conventional spinning-mass designs.
The Meridian is a digital marine gyrocompass family used to provide true heading information to bridge navigation systems.
The product has strong S.G. Brown / TSS heritage and is associated today with Teledyne TSS.
The Surveyor is the higher-accuracy version. Published figures are approximately 0.05° static / 0.20° dynamic secant latitude RMS for Surveyor versus 0.10° static / 0.30° dynamic for Standard.
Published Teledyne information states a settling time of less than 45 minutes.
The Surveyor uses a Dry Tuned Gyro (DTG) element, which reduces routine maintenance requirements.
Yes. The Meridian has been promoted as a flexible retrofit solution for replacing various existing gyrocompass installations.
SM MARINE SERVICE™ can support sourcing of complete Meridian Surveyor and Standard gyrocompasses, repeaters and spare parts, subject to stock.
Used, tested working, refurbished and reconditioned equipment may be available depending on stock.
Yes. The gyrocompass provides heading outputs that can be integrated with bridge navigation equipment according to the vessel's interface configuration.
Yes. International sourcing and worldwide shipping can be arranged according to stock availability and destination.
Teledyne TSS / S.G. Brown Meridian Gyrocompass is a compact professional true-heading reference system available in Meridian Standard and higher-accuracy Meridian Surveyor versions. The system supports digital and analogue heading outputs, repeaters, redundant gyro configurations and retrofit installation. SM MARINE SERVICE™ can supply complete Meridian gyrocompasses, repeaters and spare parts in used, tested, refurbished and reconditioned condition, subject to availability.
Marine Automation & Navigation Equipment Supplier
Available Condition:
• New Equipment • Used Equipment • Refurbished Equipment • Reconditioned Equipment
Stock Location:
• Bangladesh • China
Services:
• Worldwide Shipping • Technical Support • Spare Parts Supply • Marine Equipment Sourcing
Contact Information
SM MARINE SERVICE™ Samir Market, DT Road, Pahartali, beside CDA Market, Chattogram, Bangladesh
Mobile / WhatsApp / Viber: +88 01818 929292
Email: info@smmarineservice.com
Website: www.smmarineservice.com
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