JRC JLN-740N Doppler Speed Log
IMO-compliant JRC JLN-740N Doppler speed log. Provides highly accurate dual-axis vessel speed measurement for safe navigation and docking.
Overview
The JRC JLN-740N is a precision dual-axis Doppler speed log engineered to meet strict IMO regulations for commercial vessels. Utilizing advanced ultrasonic Doppler technology, it accurately measures both longitudinal (fore-aft) and transverse (port-starboard) ship speeds. This dual-axis capability is essential for critical maneuvering, precise docking, and optimizing autopilot steering efficiency.
The system features a compact transducer and a highly visible 4.5-inch LCD display that provides bridge teams with clear, instant speed data. Its advanced signal processing ensures reliable bottom tracking in shallow waters down to 3 meters, and accurate water tracking in deeper ocean conditions.
Anka Marine supplies, calibrates, and integrates the JRC JLN-740N into existing bridge networks, ensuring seamless data distribution to ECDIS, radars, and VDR systems for fully compliant and safe vessel operations.
Technical Specs
Key specifications for fleet planners, bridge teams, and technical procurement.
- Measurement Range
- -10.0 to +40.0 knots
- Depth Range
- 3m to 200m (Bottom Tracking)
- Frequency
- 2 MHz
- Display
- 4.5-inch Monochrome LCD
- Output Interfaces
- IEC 61162-1 (NMEA0183)
Downloads
- JRC JLN-740N Product Brochure (coming soon)
- Sensor Installation & Calibration Manual (coming soon)
- Type Approval Certificates (coming soon)
Contact Anka Marine's technical procurement team for exact pricing, datasheet requests, and retrofit engineering tailored to your fleet.