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Humminbird 998c SI Combo 8-Inch Waterproof Marine GPS and Chartplotter with Sounder

by Humminbird
4.7 out of 5 stars  See all reviews (3 customer reviews)

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Frequently Bought Together

Humminbird 998c SI Combo 8-Inch Waterproof Marine GPS and Chartplotter with Sounder + RAM Mounting Systems RAM-D-111U-C heavy duty RAM Universal Marine Electronic Mount + Humminbird AS SIDB Y Transducer Adapter Cable
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Technical Details

Edition: Dual Beam Sonar w/ SI, w/ transducer
  • 8-Inch Diagonal Screen
  • 480V X 800H Pixel Color Screen
  • 16:9 Color TFT Screen
  • 150 ft Depth with SideImaging, 1500ft, 3000ft
  • HD Side Imaging & Down Imaging with DualBeam PLUS Sonar
  See more technical details

Product Details

Edition: Dual Beam Sonar w/ SI, w/ transducer
  • Item Weight: 6 pounds
  • Shipping Weight: 9 pounds (View shipping rates and policies)
  • Shipping: Currently, item can be shipped only within the U.S.
  • ASIN: B002QCY23Q
  • California residents: Click here for Proposition 65 warning.
  • Item model number: 407760-1
  • Average Customer Review: 4.7 out of 5 stars  See all reviews (3 customer reviews)

Product Description

Edition: Dual Beam Sonar w/ SI, w/ transducer

No fish tale here, just the widescreen 8-Inch full-color displays of the Humminbird 998c SI. With the screen's 6:19 aspect ration, crystal-clear pixel resolution, and Humminbird Side Imaging, Down Imaging and SwitchFire systems, these high-performance units give serious anglers a huge on-the-water advantage. The picture-like images of Humminbird Side-Imaging and Down Imaging look even better on the generous display of the 998c SI. You won't miss a single detail as you scout in minutes what used to take hours. The widescreen display makes for easy-to-read split screen viewing of sonar displays or the incredibly detailed optional cartography packages. Add on our powerful Humminbird PC Software, and you've got an all-in-one tool to dominate the competition. With unbeatable performance and flexibility, the 998c SI from Humminbird is right on the money.

Customer Reviews

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Most Helpful Customer Reviews
14 of 14 people found the following review helpful
A Fisherman's Dream Machine August 10, 2010
I purchased the Humminbird 998C Si Bundle for my husband's birthday. He has been mentioning for some time how he would love to have one but can not see paying almost $2000 for one. He owns three other Humminbird Fish Finders that were mounted to our 21 foot bass boat. This unit has replaced everything and anything he uses for finding fish and GPS signals.

It was easy to install. He mounted it on the dash with the RAM Mounting Systems RAM-D-111U-C heavy duty RAM Universal Marine Electronic Mount. It sits securely in place with no worries of it taking a plunge into the waters. The Navigation Bundle is a must! It includes all four regions of the US as well as the waters near Canada. Being that it is the "Si" model, the unit is upgradeable and expandable to fit all your needs.

It comes with side sonar as well as down imaging. It's amazing how clear the images are. Use your side image out to 240ft on each side of the boat to find structure on the bottom. Even in three foot of water the side image is clear out past 100 feet. If you find something off to the side of the boat and want to check it out, you simply use the cursor to mark the spot as a waypoint. Then you use the navigation to go back over it to see it on the down scan. You can select an object and zoom in for a closer look. The unit has 2 SD cards slots to store pictures and video recordings of the images. Mark your waypoints with the touch of a button. There is a variety of split screen options. The LCD display is large and the resolution is vivid and clear even in sun light. The GPS is very fast to link up to satellite signal unlike our Garmin hand held.

One suggestion - keep your fingers off the screen. My husband can't stop pointing things out on the screen and leaving finger prints. To avoid smudges and dirtying the LCD screen, we purchased the ScreenGuardZ HD Anti-Glare Durable Screen Protector for Apple iPad and cut it down to size to fit the LCD screen.

If you are looking for a fishfinder that gives you depth, temperature, track and chart plotting, GPS speed, up to 3,000 waypoints, side and down sonar imaging, network capabilities and overall an awesome way to find fish holding structures - then the humminbird 998c SI is for you.

***Make sure to check out the images we have attached on the main page.

I am an avid Amazon shopper but sad to say I found this unit for 10% less on a different website, so make sure you do some "searching" before buying.
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3 of 3 people found the following review helpful
Fabulous Product! November 16, 2011
By Roy
Edition:Dual Beam Sonar w/ transducer|Amazon Verified Purchase
Installation was easy and straightforward. The navigation on screen is easily learned and used. I only have a few hours on this unit on my outboard. The only downside so far is that I see alot of prop wash on screen while underway. I installed the sending unit per the instructions so it may need some tweaking. Overall, one of the best Combo units that was a non touch screen that I researched.
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2 of 9 people found the following review helpful
Edition:Dual Beam Sonar w/ SI, w/ transducer
have had a 797 since they came out. was going to get the 898 but caught a special on amazon for $1311.07. has the 50 channel gps module. for some reason i thought this had an internal gps, but it doesn't. so you have to mount the puck as well.
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Edition: Dual Beam Sonar w/ SI, w/ transducer