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Humminbird 997C series sonar/GPS

Old 04-29-2008, 09:23 AM
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Default Humminbird 997C series sonar/GPS

Im thinking about buying the Humminbird 997 C series combo sonar/GPS. Would like to generate images of shipwrecks in the 30-150' range. Does anyone have this unit and if so how do you like it?

Thanks in advance

Capt. Dan
Wreck Valley charters
Old 04-29-2008, 10:24 AM
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Default Re: Humminbird 997C series sonar/GPS

I have one. It work ok. But when you go faster 20miles... You will lost bottom
Old 04-29-2008, 10:24 AM
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Default RE: Humminbird 997C series sonar/GPS

I have the 997c unit. It works well in 10-100ft ranges. 100-150ft has diminishing returns considering that the SI window is drastically smaller.

The navionics looks like crayon drawings when compared to garmin compatible charts.

However, having both SI and bottom looking sonar working at the same time will greatly decrease the amount of time locating and setting up on a wreck/structure.

I use the 997 as a stand alone sonar unit, and my garmin for navigation.

(edit) I can hold bottom at 32kts consistantly. As with any transducer, its all about the location of the install.
Old 04-30-2008, 08:40 AM
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Default Re: Humminbird 997C series sonar/GPS

When using a 997c or1197c Humminbird HDSI unit,i highly recommend you use the earlier Humminbird SI transducer #XHS-9-SI-160-T that was used with the 987c units. It will greatly improve your results in the:depth optained and the useable width of scan area of your images. I have a website just to inform saltwater user about this info.

It's: " ",please visit the site and join if you wish to learn more.

Thank You- Cap't Ron

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