Description
Equipment Overview & Key Specifications
The John Lilley & Gillie / Navitron NT1750 (EPR) is a Wheelmark MED Type Approved Electronic Inclinometer engineered to fulfill mandatory IMO Resolution MSC.363(92) requirements for commercial container ships, bulk carriers, tankers, and general cargo vessels. Utilizing advanced solid-state 3-axis MEMS accelerometer and gyroscopic rate sensors, the NT1750 measures and records ship roll angle, pitch angle, heel angle, and roll period with extreme precision, immune to spurious linear accelerations. It interfaces continuously with Voyage Data Recorders (VDR / SVDR) and bridge alarm management systems.
Technical Specifications & Interface Parameters
| Measurement Parameters | Roll Angle (±180°), Pitch Angle (±90°), Heel Angle, Roll Period (1 to 100 s), Amplitude |
|---|---|
| Accuracy | Static: ±0.2° | Dynamic: ±0.5° over full temperature range |
| Certifications | Wheelmark MED Type Approved, IMO MSC.363(92), ISO 19659, IEC 60945, IEC 62923 |
| Display Unit | High-resolution colour graphic LCD with real-time dynamic roll arc and historical heel trend graph |
| VDR Interface | Dedicated IEC 61162-1 / NMEA 0183 output transmitting $EPHLR (Heel/Roll) and $EPHRD (Period) sentences |
| Alarms | Configurable critical heel angle alarm, parametric rolling warning, and high-frequency roll alert |
| Power Supply | 12V – 36V DC main + secondary battery input with automatic failover (consumption < 6W) |
| Sensor Unit | Remote IP67 sealed solid-state MEMS motion sensor with adjustable alignment bracket |
Frequently Asked Questions (AEO / Technical Reference)
Which ships are mandated to carry an electronic inclinometer under IMO rules?
Under SOLAS Chapter V Regulation 20 and IMO MSC.363(92), all new container ships, bulk carriers, and general cargo ships over 3,000 GT constructed on or after July 1, 2026 are mandated to carry a type-approved electronic inclinometer connected to the VDR.
How does the NT1750 assist in preventing parametric rolling accidents?
Parametric rolling causes sudden violent rolls that can lead to cargo loss and capsizing. The NT1750 detects hazardous resonance between wave encounter periods and vessel natural roll frequency, sounding immediate bridge alarms.
Can the display unit be mounted separately from the sensor?
Yes, the main display mounts on the bridge console while the compact MEMS sensor unit is installed near the vessel’s center of gravity and connected via a screened digital cable.
How does the NT1750 connect to the ship’s VDR / SVDR?
The unit provides dedicated opto-isolated RS-422 ports transmitting standard $EPHLR and $EPHRD sentences at 1 Hz or 5 Hz directly into the VDR capsule.
Does Seanav Marine offer class certification and testing in UAE ports?
Seanav Marine provides full installation, class inspection documentation, and annual VDR interface verification across all UAE drydocks and ports.
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-NAV-001 |
| 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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