Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: Is there an ice transducer available for 698ci HD SI sonar?
Document: The Internal GPS is only accurate to 4.5 meters You can upgrade to a external ( AS GPS HS )  sold by Amazon. for better results. The transducer mounting can be a little tricky for SI, so you might want to consult a professional . And remember for some problems with computers like this. first REBOOT. the 5 inch display is the smallest they make for a SI, So for the best resolution possible go for the biggest display you can afford.
I wanted to replace a Humminbird 300TX I purchased in 2002. That unit still worked fine, but I thought side-imaging and down-imaging would 'up my game' and a higher resolution color sonar display was a great bonus.. I was reluctant to perform the transducer cable installation, so I had the 698 professionally installed at a marine dealer.First, the 'positives' :GPS. . .
I have the older version of this model, the 798ci SI. Basically the same, but cost me $ 1050. oo  Be aware that you need to spend a lot of time getting use to any unit with SI, and all the other features . Send Huminbird  support a email and ask for a manual. Refer back to it often, even after having this for a year or two you will learn something.
. . . Sensitivity had to be at maximum for adequate display brightness. Nothing was revealed using SI except for some variations in shading indicating depth changes. This held true despite passing close to known, artificial structures and fish attractors. Like down-imaging, no fish were revealed at any time, Curiously, both left and right dispalys exhibited a fine waffle-like patterns that were not representative of actual bottom conditions.
Both times, after ~20 mins., I would turn power off and on and then satellite links were established and remained throughout the trips. Although the unit is partially enclosed in a Lund boat compartment, that doesn't explain why powering the unit off and on would establish satellite communication in short order.Sonar. . . .
The display also became much brighter at speeds above 6 mph.In summary, I was undecided regarding ratings of 2 or 3 stars. I do like the unit but I could have bought a much less expensive unit with only GPS and Sonar and still enjoyed a great experience.
'on' and it's sensitivity to highest possible.Down imaging at less than 6 mph. . . display was quite dim despite changing color palettes. Increasing sensitivity and the use of 'enhanced' mode helped, but that also seemed to increase sensitivity for the regular sonar display. One tree was observed on down-imaging. Scanning directly over 'snags' revealed nothing. Gatherings of fish, as displayed on sonar, would not be indicated at all when immediately switching to the DI view.
The dispay overall was fantastic and fish arches could be discerned even at speeds in excess of 20 mph.Temperature indications and speed indications. . . .seemed really stable with this unit.Sonar. . . . Display was excellent and could easily be seen in bright sunlight. Sensitivity had to be reduced on these trips because the water in Lake Gaston was heavily loaded with spring run-off junk supplied by Kerr Reservoir and creeks. Fish arches were readily discernable  even at 25 mph!Now the 'negatives':GPS . .
This thing works as promised .Usually if I'm not catching fish I wonder if  its me.I went to my Crappie brush pile , and showed it was covered up and the depth of the fish . .Not a bite all day off that pile.Without the fishfinder I would be wondering why did I waste my time on the brush pile and making it.This proved the fish weren't biting.I did buy a 32 SD card with it .
That I got off of Amazon also.With all that it was a 30 minute job mounting everything .The unit works easy peasy , I thought I was going to need a Chinese programmer with me. BUT the menu is VERY easy to use. I never opened the manual .Its expensive. But I will be saving my money and mounting one on the back of the boat now , for my dash.
Answer: no