Hi all, I'm new to the forum and I'm thinking about purchasing the navionics plus card. I have a hummingbird 597 CI HD DI unit and while Navionics says it's compatible, I'm not sure how well it would work. Anybody using the plus card with an older hummingbird?

It should work fine for both map layers.

You don't have the oldest version of the 597, that did not have HD in the model name.

 

The current version is Navionics+ Preloaded and is a 16 GB card.

It has all the maps for the US and Canada.

I have the 2GB version of Navionics+ and have used it in my 798ci SI Combo. It was made on October 26, 2009. The 500 series units are similar with less features.

The first 5 or 6 digits of the serial number is the day the unit was made--- Year/Month/Day

 

To view the Sonar Charts layer you have to change the Chart Select to FishNChip.

You won't have Sonar Charts when you buy that card, you select to download that map layer when you do an update. You have to register and do an update within 60 days of purchase or you loose the year of Freshest Data Updates that all new purchases include.

 

My unit will read the Nautical Charts (Navionics maps) and Sonar Charts on my Hotmaps Platinum card which is 16 GB. Just won't read the Platinum features.