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Navionics sonar scans...before and after



  • blewitupsirblewitupsir Posts: 774 Officer
    Haha I was thinking the same thing gents.
    http://hopefishing.comFishing the Florida Everglades National Park with Hope Fishing Adventures.
  • SirSnukeSirSnuke Posts: 17 Greenhorn
    Sharky - The screenshot fishinmcnut posted is of Turtle Key, south of demi john key. I have the platinum plus card for my humminbird, fishinmcnut is right on, the satellite imagery tiles around demijohn are amazing, then go south a little and its nearly useless. Images look like they were taken when it was low light and windy with too much glare to see anything. You mentioned you need a lat long for this area, i believe turtle key is
    25* 45.987'
    81* 23.075'

    An update/fix for this area would be great.
  • mtbrider85mtbrider85 Posts: 341 Deckhand
    Sharky- You mention Garmin units can use Navionics… I always thought Garmin used their own mapping and refused any other source for their products… is this a new development? I love the Navionics iPhone/ipad app.
  • FishinMcNutFishinMcNut Posts: 536 Officer
    The ticket number is:
    Navionics DR case # 6970 [ref:_00DU0YMtF._500U08Jd8K:ref ]
    Feel free to call my cell 954-444-6077
    Update: Appears this is a known issue. I read details of this case number from Oct 2013. Navionics noted they had a problem with the satellite imagary for the area and were working to source new imagary.

    Can one of you Navionics guys please provide an update?
  • Forrest GulpForrest Gulp Posts: 2 Greenhorn
    This was the last response we received on the referenced case number from Navionics, this was sent on November 1, 2013. I have asked for updates since then, including today and have yet to hear from support?
    "We are trying to find another source for the satellite imagery that you reported as cloudy for Chokoloskee Bay without clouds obstructing the view. Once we have this new source information and incorporate it into the charting, we will advise you. Unfortunately these types of reports may take a while as we need to find new sources and be able to license the new source data. Most of the time, the sources don't update their images due to low light or clouds as they take the images during different times of the day and on different days. I would not have any time-frame of when this will be changed.

    Please let me know if you have any questions and have a great day.

    Jennifer Pereira"

  • sharky12sharky12 Posts: 199 Deckhand
    Sorry guys haven't been on in a while. Ok some answers:
    - The image I posted is the current image from last year. The image that I'm told is "better" from two years ago is a satellite image from 2004. it is also a lower res image. Which means 1: that's a ten year old sat image. I would not want to run on that. 2. lower res means you cant zoom in closer as clearly. 3. So yes when we went back and looked, when that sat image was taken the water was cleaner (we all know the bS going on with river run off these days) so you sould see some areas of shoals however that was ten years ago. Shoals move, not as accurate now. the imagery now is from last year so it is more recent hence the nice ugly brown water but the creeks, islands and such are recent.
    - I'm not seeing clouds on my chart over Chokoloskee. Are you zooming in far enough? I was just there a month ago and had zero issues. I believe that is the older chart potentially?
    - Garmin: Correct, Navionics cant run on Garmin. HOWEVER you can record Garmin sonar logs, submit them online and it will update all charts with new one foot contours. the downside is you cant run a Navionics chart on a Garmin HOWEVER you can use the iphone or ipad and be able to update those areas with the Navionics+ in app purchase and see the changes you've made. Either run the boat then using the ipad or sit at home, check out the changes and then pull the lat/longs to add onto your Garmin to fix. Bascially becomes a planning tool or a way to create routes ahead of time.

    Sorry... needed to get specific answers for you.
  • sharky12sharky12 Posts: 199 Deckhand
    lol @flatwater. Freeholder huh. Gotta remember that one.
  • FishinMcNutFishinMcNut Posts: 536 Officer
    sharky12 wrote: »
    Are you zooming in far enough? I was just there a month ago and had zero issues. I believe that is the older chart potentially?
    Sorry... needed to get specific answers for you.
    I updated my brand new 632 P+ before first use. The pic I posted earlier in this thread shows dramatic contrast between what I would call the good and the bad. I will attach it again below. As to zooming in, the closer I zoom the worse it gets. Resolution is so poor that I loose ability to differentiate between water and land.
    BTW, My stomping grounds are south of Lostmans. The water has been brown (muddy & tannins) since I grew up fishing it in the 60's. I fell in love with P+ two years ago fishing that area on a friends boat equiped with it. He is now one of the disgruntled masses after updating and loosing his beloved P+ charting ability.
  • FishinMcNutFishinMcNut Posts: 536 Officer
    Looks like we I bought an inferior product:
    Please note that our Cartography Department investigated the matter and found that the area is not "cloudy" but is satellite imagery taken at different times so they appear to be "patches" of data. There is no cloud coverage; however it may have been an overcast day or the images taken at a later/earlier time of the day showing the image as darker than the rest of the area. We are looking for new sources for the satellite imagery, but there is no time-frame of when or if we will be able to obtain them. This is not an issue with the charting due to the numerous outcome possibilities when taking satellite images. We will still keep your information on file for when/if we obtain additional satellite imagery for the area.

    If you have any additional questions, please do not hesitate to contact us.

    **IMPORTANT: Please REPLY directly from this email message in order to associate your response to your Navionics case number and to keep all correspondence together. DO NOT START A NEW EMAIL.

    Best regards,
    Jennifer Pereira
    Navionics Customer Service
    Tel: 800-848-5896 | Fax: 508-291-6006
  • Forrest GulpForrest Gulp Posts: 2 Greenhorn
    Well since it looks like Navionics will not make this a priority and using the current satellite images is completely useless, does anyone have suggestions for an alternate to the Navionics chips? I would gladly purchase a new chartplotter with a competitor's chip in a heartbeat and throw the Navionics chip in the garbage where it belongs!

    Any and all suggestions and recommendations would be appreciated.
  • eli_lillyeli_lilly Posts: 135 Deckhand
    Whatever you do, for god's sake don't start a new email if you reply to that message from Navionics.
  • Egrets LandingEgrets Landing Posts: 956 Officer
    I would stay away from Navionics Platinum+ for the 10K. I recently upgraded my electronics and went with their 632 P+ card to start enjoying a Google Earth type experience. Used my boat for the first time Saturday and quickly learned satellite imagery for the 10K is horrible. The charts are great until you get south of Sand Fly Pass. Their satellite images are dark and lack any clarity. They must have been taken at dusk or dawn. I ended up switching back to the built in Simrad "Insights" charts. At least I could see them.
    I spoke to a couple of other P+ owners after Saturday and they informed me the charts were great until Navionics updated them about a year ago. Both said they have complained to Navionics and it falls on deaf ears.

    Major disappointment!

    You should try the Florida Marine Tracks chip. Not only is it the best imagery available to run on your GPS anywhere, but also shows you how to get there. About 3,000 miles of precision tracks in Monroe County alone and tons of detailed low tide tracks in 10,000 islands too. Excellent clarity and 1' resolution on the imagery in Collier County which is also recent btw. It is 6" resolution in ENP in the keys. Resolution is so high zoomed in that the units are not able to read the photos at full clarity. We were just in 10000 islands for a week in October running negative tides and will be incorporating lots of new runs this week. The updated detailed tracks for 10,000 islands will also be out before Thanksgiving. Compare to Navionics which is horrible and pretty much useless for navigating the everglades and the Keys. The Navionics is also about a decade old as well.


    Actual screen shots from an HDS chartplotter (but looks a lot better on the unit than in photos):











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