Echosounder/Speedlog
critical
Known Models (3)
Furuno Electric (Japan) FE-800/DS-80 Series
Depth 0.5-3,000 m / Speed 0-40 kn
· Ultrasonic (Water)
Voltage: 24V DC
type: Echosounder / Doppler Speed Log
size_range: ['FE-800 Echosounder', 'DS-80 Speed Log']
variant_count_approx: 2
period_start_year: 2012
period_end_year: None
drive_type: Electric
construction: Hull-mounted transducer, ultrasonic/Doppler
Common Failures:
- • Transducer fouling from marine growth
- • Transducer cable damage
- • Display unit failure
- • Speed log calibration drift
- • Air bubble interference in shallow water
Service: Transducer face cleaning at drydock. Speed log calibration by measured mile or GPS comparison annually. Depth alarm test weekly.
Spares: Furuno global. Lead time: 1-3 weeks. Transducers: 3-6 weeks.
JRC (Japan) JFE-680 Echosounder / JLN-652 Speed Log
Depth 0.5-2,000 m / Speed 0-30 kn
· Ultrasonic (Water)
Voltage: 24V DC
type: Echosounder / Doppler Speed Log
size_range: ['JFE-680', 'JLN-652']
variant_count_approx: 2
period_start_year: 2012
period_end_year: None
drive_type: Electric
construction: Hull-mounted transducer
Common Failures:
- • Transducer fouling
- • Speed log calibration drift
- • Display issues
Service: Standard echosounder/speed log maintenance.
Spares: JRC global. Lead time: 1-3 weeks.
Kongsberg Maritime / Simrad (Norway) EA600 / EM Series
Depth 0.5-12,000 m
· Ultrasonic (Water)
Voltage: 24V DC / 100-230V AC
type: Scientific/Hydrographic Echosounder
size_range: ['EA600 Navigation', 'EM2040 Multibeam']
variant_count_approx: 2
period_start_year: 2005
period_end_year: None
drive_type: Electric
construction: Hull-mounted or gondola transducer, single/multi-beam
Common Failures:
- • Transducer fouling
- • Electronics overheating
- • Network communication errors
- • Transducer window delamination
Service: Transducer cleaning at drydock. Calibration annually. Scientific models: calibration per IHO standards.
Spares: Kongsberg/Simrad. Lead time: 2-4 weeks. Transducers: 4-8 weeks.