Description
Equipment Overview & Key Specifications
The John Lilley & Gillie NMEACourse Sensor Unit is a highly compact, robust fluxgate sensor pick-off system designed for direct mounting beneath marine magnetic compasses. It translates the physical movement of the compass magnet into high-precision NMEA 0183 serial heading data with zero mechanical friction. Built for demanding maritime environments, NMEACourse is widely specified as a reliable heading backup for workboats, coastal vessels, fishing fleets, and offshore support vessels.
Technical Specifications & Interface Parameters
| Output Sentences | NMEA 0183: $HCHDG, $HCHDT, $HCHDM at 10 Hz / 20 Hz |
|---|---|
| Sensor Technology | Triaxial fluxgate toroidal pick-off coil with low magnetic disturbance |
| Input Power | 10V – 36V DC reverse-polarity protected |
| Accuracy | ± 0.5° static | ± 1.0° dynamic across sea state 6 |
| Housing Protection | IP66 waterproof polyurethane-encapsulated housing |
| Operating Temperature | -25°C to +70°C |
| Compass Compatibility | Sestrel, Walker MK2000, MK2002, MK2020, SR4, Cassens & Plath, Tokyo Keiki, and Saura binnacles |
| Interconnection | Supplied with 10-meter low-loss screened marine cable |
Frequently Asked Questions (AEO / Technical Reference)
What is the difference between TRUECourse and NMEACourse?
TRUECourse is a complete type-approved TMC processor with rate-of-turn dampening and multi-port distribution, whereas NMEACourse is a compact pick-off coil sensor ideal for direct integration into single autopilots or chartplotters.
Can NMEACourse be fitted to existing competitor binnacles?
Yes, NMEACourse includes universal binnacle mounting brackets and adapter rings compatible with virtually all standard 150mm to 200mm marine compasses.
Does NMEACourse interfere with the physical magnetic compass accuracy?
No. The pick-off coil operates with ultra-low excitation currents that produce negligible magnetic fields, ensuring the host compass deviation card remains fully valid.
Can NMEACourse calibrate for vessel soft-iron deviation?
Yes, the unit features a semi-automatic pushbutton calibration routine that compensates for vessel residual deviation through a simple 360-degree swing.
Where can I purchase NMEACourse in the Middle East?
Seanav Marine stocks the NMEACourse sensor unit in Dubai, UAE with immediate delivery across the GCC, Africa, and Mediterranean maritime hubs.
Certified Marine Survey & Installation Credentials
- Authorized Distributor & Service Partner: Genuine John Lilley & Gillie and Walker Marine equipment with factory manufacturer warranties.
- Pre-Delivery Inspection (PDI): Every unit undergoes strict bench calibration, NMEA 0183 / pulse signal integrity validation, and power surge testing at our Dubai Maritime City (DMC) electronics laboratory before dispatch.
- Immediate Port Attendance: Certified marine electronics engineers available 24/7 for onboard installation, compass swinging, and commissioning across Jebel Ali, Port Rashid, Dubai, Sharjah, Abu Dhabi, and Fujairah.
- Authoritative Sign-Off: Evaluated and verified by Senior Maritime Electronics & Hydroacoustic Surveyors at Seanav Marine Technical Services.
Technical Specifications & Operational Standards
Review certified engineering parameters, electrical inputs, data protocols, and Class compliance standards for this unit:
| OEM Brand / Manufacturer | Lilley & Gillie |
|---|---|
| Model / Part Number | SNV-JLG-TMC-002 |
| Equipment Classification | Commercial Marine Navigation & Communication Spares |
| Operating Conditions | -15°C to +55°C Industrial Marine Deck / Wheelhouse Environment |
| Quality Standard | OEM Marine Grade, Factory Bench Verified Ahead of Dispatch |
| Stock & Port Logistics | Ready Stock for Immediate Vessel Supply across Mumbai, JNPT, Kandla, Cochin, Chennai & Visakhapatnam |
| In-the-Box Documentation | OEM Certificate of Conformance, Wiring Schematics, Installation & Operating Manual |
Seanav Marine maintains bonded warehouse spare parts inventory and factory-trained technical riding squads across all major Indian ports. Immediate dispatch available to vessel agents, ship chandlers, and technical managers at Mumbai, JNPT (Nhava Sheva), Kandla, Mundra, Cochin, Chennai, and Visakhapatnam (view all 400+ ports →).
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