Best Saltwater Fish Finder
Saiyang marine fish finder for saltwater: choose 50/200kHz transducers. Features bottom contour mapping, water temperature, depth readout, external GPS input & data storage. Get wholesale price for commercial fishing.
Product Introduction
Dual-Frequency 50/200kHz Saltwater Fish Finder | Corrosion-Resistant for Boats
Corrosion-Resistant Dual-Frequency Fish Finder for Saltwater Boats
For inshore and offshore anglers battling corrosive saltwater environments, this fish finder provides dual selectable frequencies (50/200kHz) to distinguish bottom structure from fish arches. Its optimized transducer matching and power anti-interference ensure stable readings even when running alongside radar or VHF radios – while the external depth output feeds data directly to your autopilot or plotter.
How This Saltwater Fish Finder Solves Real Problems
Saltwater corrosion protection – Specialized cooling performance and sealed components resist salt spray damage, extending product life in marine environments.
Clear target identification – Dual-frequency option lets you use 50kHz for wide coverage searching and 200kHz for detailed bottom contours identifying fish arches from structure.
Interference rejection – Built-in same-frequency avoidance reduces crosstalk from other fish finders in crowded fishing grounds.
Automatic adjustments – Auto TVG (Time Variable Gain) automatically adjusts sensitivity for depth changes, no manual tuning required.
Technical Benefits
Find fish, not false targets – Dual-frequency beam separation prevents algae, bubbles, or plankton from appearing as fish on your display.
Install on any vessel – Optional transducers available for trolling motors, thru-hull mounting, or transom mounting.
Review your day on the water – Built-in data storage and playback lets you analyze bottom structure and fish locations after returning to dock.
Connect to your existing system – External GPS input for marking waypoints plus external depth output to feed depth data to autopilots and chart plotters.
Frequency and Transducer Selection Guide
Shallow water (under 30m) fine fish targeting – Use 200kHz high resolution with plastic transom mount or thru-hull transducer.
Deep water (over 30m) wide area search – Use 50kHz wide beam angle with bronze thru-hull or stainless steel shaft transducer.
Salt spray corrosion priority – Use dual-frequency selectable mode with rubber coated transducer.
Product Features
50 & 200kHz
Auto TVG for automatic depth compensation
Support data storage and playback
External GPS input for location
External depth output for autopilot integration
Optimized transducer matching performance
Optimized cooling performance for saltwater use
Power anti-interference for stable operation alongside other electronics
50kHz same frequency interference avoidance
200kHz same frequency interference avoidance
Optional Transducers Available
Contact our sales team to select the right transducer for your vessel type, hull material, and fishing depth requirements.
Optional Transducers
Technical parameters：
|
Model |
FP1021S |
|
TX Frequency |
50&200KHz |
|
Output Power |
1000W-1500W |
|
TXRate |
0.12~3.0ms |
|
Accuracy |
0.1m |
|
Sensitivity |
-95dBm |
|
Alarm |
Depth,Voltage,Temperature |
|
Language |
Simplified Chinese, English, Traditional Chinese |
|
Display Unit |
|
|
Display Mode |
Dual frequency,Single frequency (high or low freq.), A-scope, Zoom(high or low freq.) |
|
Expansion Mode |
Auto Expansion,Manual Zoom,Bottom Lock |
|
TXRate |
7 steps(stop,1/8,1/4,1/2,1/1,2/1,3/1) |
|
Color |
Echo color:5 color schemes Background color：black, blue |
|
Interface |
|
|
Input data |
IEC61162-1(NMEA0183)RMC, GLL |
|
Output data |
IEC61162-1(NMEA0183)DPT, DBT(After GLL and RMC Input) |
|
Serial port to print |
Suitable for printer DPU-414 |
|
Power Supply |
DC 24V(11-35V) |
|
Environmental |
|
|
Operating temperature |
-10℃~+40℃ Compliance with IEC60945 standard |
|
Working humidity |
10~90% |
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