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Humminbird 981C SI

Color Fishfinder 

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to continental USA

No sales tax outside of Nebraska.


Humminbird 981C SI

Revolutionary side imaging sonar looks through any water to reveal structure and bottom with photo-like detail!  The 981C SI maps enormous areas of the bottom revealing topography and structure with picture like detail, plus combines traditional 50/200kHz sonar and an ultra wide, high resolution screen.


  • View enormous areas of the bottom with picture-like detail using Side Imaging sonar
  • Brilliant, 7" sunlight viewable color display with 480V x 854H resolution
  • Dual frequency 50/200kHz sonar and revolutionary Side Imaging sonar technology
  • 750 Watts RMS, 6000 Watts PtP (200kHz) and 1000 Watts RMS, 8000 Watts PtP (50kHz) Power Output, 2 1/2 Target Separation
  • Dual microprocessors and triple channel sonar transmitter/receiver deliver fast, smooth operation
  • Full screen trackplotter, 3D track and split screen sonar/track with adjustable split
  • Programmable view presets access important screens with one touch
  • Plug & Play Compatibility with WeatherSense Barometric Pressure, SmartCast Wireless Sonar Link and PC Connection Advanced Accessories
  • In-dash or Gimbal mount.
  • Fresh & saltwater set up options for optimal performance in any environment.
  • Water surface temperature included in transducer, speed paddelwheel included.
  • Complete GPS Trackplotting capability to show position, mark hotspots and easily find your way home.
  • PC Connection capability to save waypoints, and upgrade internal software
  • Accelerated Real Time Sonar™ operates at up to 40 times per second to instantly capture the action under the boat.
  • Xpress™ menus place most important setting at your fingertips
  • Freeze Frame pauses the sonar scroll for detailed inspection of the screen.
  • Instant Image Update immediately shows the results of setting changes for the most accurate fine tuning.
  • Sonar Echo Enhancement™ technology is so sensitive it’ll track a jig to over 40ft and separate targets within 2 ½ inches!
  • Fully gasketed waterproof design & it float.
  • Selectable large digit screen for easy-to-read number display.
  • Backlight for night viewing
  • TripLog with distance, elapsed time, and average speed
  • Totally automatic operation or totally manual operation with upper and lower range control.
  • Temperature graph overlay and audible temperature alarm
  • One-touch Zoom with 2x, 4x, 6x, and 8x zoom Levels.
  • Adjustable chart speed.
  • Feature memory retains your settings.
  • One-year limited warranty.
  • Assembled in U.S.A.
  • Full Specifications

Package includes 981C SI, transducer, power cable, mounting gear.

Special Promotion!  Purchase a Humminbird 900 series fishfinder and get the WeatherSense Barometric Pressure Monitor AND a RAM 111 Mount (total retail value: $119.98).  Click here for details.

To order the Humminbird 981C SI Color Fishfinder, add to cart.
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Product ID Number Price Add to Cart
Humminbird 981C SI  406230-1 sold out

Humminbird AS-GR4 GPS Antenna 405780-1 $99.00 

Free Shipping to continental USA!   No sales tax outside of Nebraska.




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Last modified:  June 24, 2015

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