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Humminbird PiranhaMax 197c Review

UPDATED Jan. 2023
Brand: Humminbird
Model: PiranhaMax 197c
Our Score: 7.7/10
Table Of Contents+
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PiranhaMax 197c is one of the older models produced by Humminbird, but it still among the cheapest and most compact fish finders that come with a transducer. Note that its functionality is limited to fish-finding features only, meaning it does not come with GPS and preloaded maps and charts.

Read this detailed Humminbird PiranhaMax 197c review to learn more about its features, optimal usage, and overall fish-finding capabilities.

Humminbird PiranhaMax 197c on white background

Pros & Cons

    • Dual beam sonar (200/455 kHz) 
    • XNT 9 28 T transducer included (with transom mount + temperature sensor) 
    • Maximum depth – 600ft 
    • IP-X7 waterproof rating 
    • Numerous sonar functions 
    • Compact and easy to use 
    • Budget-friendly 
    • No software upgrades 


SpecificationsHumminbird PiranhaMax 197c
TypeDown Imaging
TransducerTransom XNT 9 28 T
Display (size, resolution, backlit, color)3.5″ diagonal, color TFT with a 256 color range, 240H x 320V pixel resolution, with LED backlight
Dimensions10.3 x 13.5 x 12.5 inches
Weight4.6 pounds
Depth Capability600 feet (183 m)
Frequency200 kHz / 28° and 455 kHz / 16°
Power Output300 Watts (RMS)
Power Input10-20 VDC
Routes, Waypoints, TracksNo
Wi-Fi ConnectivityNo
MicroSD card slotNo


Humminbird PiranhaMax 197c features a rather small 3.5” color display with a resolution of 240 x 320 pixels. The color palette goes up to 256 colors and the screen features an LED backlight, which makes images much easier to observe at night or in direct sunlight.

Humminbird PiranhaMax 197c side view

The waterproof rating for this device is IP-X7, which means it should be able to withstand water splashes, rain, and even total submersion in 3.3ft of water for up to 30 minutes. However, since it features an “X” in its rating, we know that it has not been tested against the entry of solid objects like dust or sand, for example.

Humminbird PiranhaMax 197c does not come with the touchscreen functionality and can only be operated via the 4 buttons located underneath the screen.

Sonar & Transducer

Humminbird PiranhaMax 197c features a dual beam 2D sonar capable of covering 200 and 455 kHz. However, since the sonar is only dual beam and NOT dual beam plus, you can either use one beam or the other.

The unit features the XNT 9 28 T transducer, which covers both frequencies and comes with a transom mount. It also has a sensor capable of measuring topwater temperature and features 20ft of power cable.

PiranhaMax 197c only uses a standard 2D sonar and is not capable of down imaging technology. If you are looking for a similar model with this functionality, you might want to take a look at PiranhaMax 197c Di. Both sonar beams are conical and operate at 28° for 200 kHz and 16° for 455 kHz.

With its default transducer, the unit can reach up to 600ft, which is rather impressive for such a small device. Even though it can provide you with a clear bottom reading at up to 30 MPH, you will get the optimal imaging at 5-6 MPH.

PiranhaMax 197c comes with numerous standard sonar features, including Fish ID+, Structure ID, Bottom View, WhiteLine, and 3 different alarms (battery, fish, and depth). The fish alarm allows you to choose between small, medium, and large fish (or all at once) and it will notify you when the unit detects a fish that matches the set parameters.

What's In The Box

    • Humminbird PiranhaMax 197c
    • Mounting bracket
    • Installation hardware
    • Transducer
    • Documentation


PiranhaMax 197c is a pretty basic fish finder ideal for beginners and experienced kayak/canoe anglers. It comes with a traditional dual beam 2D sonar that covers both 200 and 455 kHz (but not both at the same time) and the XNT 9 28 T transducer that is able to cover both frequencies.  

The maximum depth is 600ft, which also makes this unit viable for off-shore fishing (if you remain close to the shore), depending on the bottom structure, of course.

Bottom line, this PiranhaMax 197c review revealed a very compact and inexpensive fish finder ideal for smaller vessels, inland fishing, and also moderate off-shore ventures.   

Our score: 7.7/10