Furuno Echosounder FCV-38
The FCV-38 multibeam echo sounder combines multibeam and split-beam technology. With a transmission frequency of 38 kHz and a transmission power of 4 kW, it offers excellent range. A built-in motion sensor provides highly effective pitch/roll stabilization. When connected to a satellite compass, heave stabilization is also achieved. Features size distribution presentation within the fish school. The transducer from the previous FCV-30 model can be reused for retrofit installations.
Fully Stabilized Split-Beam Echosounder with 5 Independent Beams
- 4 kW transmit power and 38 kHz frequency for long-range detection
- Large transducer with 64 elements
- 5 beams can be operated independently with up to 20º tilt
- Integrated motion sensor provides pitch and roll stabilization
- Heave compensation available when connected to satellite compass
- 3 simultaneous graphs for size distribution analysis
- FCV-30 transducer can be reused in retrofit installations
The FCV-38 is the successor to the widely popular FCV-30 low-frequency echosounder. Like its predecessor, the FCV-38 combines multibeam and split-beam technology. With its low frequency and high output power, the FCV-38 offers the same long-range performance as the FCV-30. In addition, it features a built-in motion sensor for pitch and roll stabilization. When connected to a satellite compass, it also achieves heave compensation—resulting in full stabilization. This is essential for accurate bottom representation and reliable fish size analysis. For retrofit installations, the FCV-30 transducer can be reused.

FCV-38 Multibeam Technologi
The FCV-38 features five independent beams that can be freely enabled or disabled. A new addition in the FCV-38 is the semi-simultaneous transmission mode, where only selected beams transmit at the same time. This increases the power per beam while reducing the risk of noise caused by beam-to-beam interference.

FCV-38 Stabilization
Split-beam technology enables pitch and roll stabilization. The FCV-38 uses a large transducer with 64 individual elements—each forming a channel for pulse transmission and echo reception. The stabilization algorithm treats TX and RX independently, enabling highly accurate imaging of the bottom and bottom structures. For optimal stabilization, the FCV-38 can be connected to a satellite compass for heave compensation.

Without pitch and roll stabilization, fish may go undetected.

Stabilization keeps the beams steady on the selected targets.
FCV-38 Size Distribution Analysis

Split-beam technology combined with full stabilization is critical for reliable fish size analysis. The FCV-38 can analyze an entire school or portions of it and display 3 simultaneous graphs based on 3 different sections of a fish school. Size distribution presentation is identical to that of the Furuno echosounder FSS-3BB.
Four Modes for Size Distribution
The FCV-38 offers four analysis modes for fish size distribution: across the entire detection range, within a specified range, fish located near the seabed, within a user-defined rectangle placed over f.ex.: part of a school. Up to three rectangles can be set simultaneously. Each rectangle and its corresponding graph are color-coded with matching frames, making it easy to identify which graph represents which section.

Echo sounder | |
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Technology | FM |
Frequency | 38 kHz |
Transmitter power | 4 kW |
Range (depending on transducer) | 10-5000 m |
Product details | |
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Display | Selectable size, addon |
Power supply | 12-24 VDC, 100-120 VAC 60Hz, 220-240 VAC 50Hz |
Connections | NMEA 0183 |