JLN-900 Speed Log

JLN-900

JRC (Navigation) · Japan

Acoustic correlation speed log providing both speed through water (STW) and speed over ground (SOG) measurements from a single combined transducer unit. Uses 3.8-4.2 MHz for water speed and 150 kHz for ground speed. Fully compliant with IMO MSC.334(90) using a single device.

Technical specifications

Measurement Method
Acoustic correlation
Frequency (STW)
3.8 - 4.2MHz
Frequency (SOG)
150kHz
Speed Range (STW)
± 50knots
Speed Range (SOG)
40 (any direction)knots
Speed Accuracy (STW)
0.1 knot or 1.0%
Speed Accuracy (SOG)
0.2 knots or 2.0%
Distance Range
9999.99NM
SOG Depth Range
2 - 250m
Minimum Depth (STW)
3m
Weight (Signal Processor NJC-80)
18kg
Weight (Signal Distributor NQA-4480)
20kg
Weight (Main Display NWW-82)
0.6kg
Weight (Transducer CFT-780)
23kg
Weight (Sea Valve NKF-980)
125kg
Power Supply
100 / 115 / 220-230 VAC, 47.5-63 Hz
Power Consumption
50VA

Certifications

  • MED
  • SOLAS

Data source

All data sourced from jrc.co.jp View original page →