Jump to content
  • GUESTS

    If You  want access  to member only forums on FM, You will need to Sign-in or  Sign-Up now .

    This box will disappear once you are signed in as a member.

Recommended Posts

I'm planning a fishing trip to Vermilion this summer. It's been many years since I've been up there.

I have the Navionics + app on my mobile devices and have been marking spots that look interesting.  One of the spots I marked was a nice hump surrounded by deep water. There was a big difference between the Navionics Nautical Chart view and the Sonar Chart view. It literally disappeared on the Nautical view but showed on the Sonar View. I then ran the map "update all" and from the Sonar view now it was gone from both views with my marker out in the middle of nowhere.

So I started to look around for other areas that showed a big difference between the two views. (Many areas however do look very similar on both views) I've attached a couple of screen grabs of a spot that has a huge difference. This is on the north side of Pine Island near Matson Island.

The first is the Nautical Chart view, The second is the Sonar Chart View.

I always thought that the Sonar Chart would be the most accurate, they look more detailed, plus according to Navionics the Sonar Chart is "constantly being updated by Sonar Logs contributed by million of boaters."

I'm not really sure if I can trust either?

To anyone who knows this part of the lake, are there really the holes and humps in this area?  One view shows a 52' hole where the other has 15 FOW.

 

navionics.jpg

sonar.jpg

Link to comment
Share on other sites

I know that part of the lake fairly well. The Sonar chart is definitely better but I'm still surprised at how inaccurate it is. There are humps etc but they don't have them in the right places.

Link to comment
Share on other sites

Sonar chart is going to be more detailed (obviously). As far as accuracy it’s pretty spot on the most I’ve found navionics to be off is a foot or two usually on steep breaks or humps.

Link to comment
Share on other sites

Wow, I just replicated what you show, and I can confirm the same results.  I did not expect that much of a difference.  Crazy.

  • Yayyyy 1
Link to comment
Share on other sites

I also replicated the differences on my Navionics.  I don't know what to trust now.  I was in 48 FOW on Burntside last weekend and my Navionics said I was in 74 FOW, and I wasn't on a sharp break.

Link to comment
Share on other sites

JL, I’ve fished burtside multiple times and have noticed that it seems to be off all over the lake. That’s the only place I’ve noticed it though.

  • Thanks 1
Link to comment
Share on other sites

The sonar chart that shows 52 feet is totally wrong!

Probably more like 15' to 20' depth.

The Navionics  is probably closest to correct.

Cliff

  • Thumbs Up 1
Link to comment
Share on other sites

Not seeing that when I switch it to sonarchart. I don't have navionics + app though just regular old navionics. For what it's worth I've always been on the navionics setting when I use the phone app on the lake and it's mostly spot on. Actually didn't realize sonarchart existed until now

  • Thumbs Up 1
  • Thanks 1
Link to comment
Share on other sites

2 hours ago, KirtH said:

If you see any issues with mapping follow this link they are very good at fixing issues. 

http://navionics.force.com/PlugPlay?cancel=http%3A%2F%2Fnavionics.force.com%2Fkb&l=en

I actually did follow up on that same  Navionics mapping discrepancy report earlier today. I sent them the same images that I posted here.

More or less just curious to see what the response would be.

It is interesting to see that community sonar readings can be used to improve mapping software but it looks as though it's not quite perfected yet.

Link to comment
Share on other sites

I have had the app for several years.  The first thing I noticed on the old app, was a series of trenches in North Niles Bay.  I skeptically went out there first thing to check it out and found nothing.  A few years later, their update corrected the issue. Found many other inaccuracies since then.   I would give the app low marks for accuracy but good marks for functionality.  It is a serviceable for scouting, navigating and marking your spots.  I do use it on ice.   I heard that Garmin did a full lake survey last year.  I am looking forward to their product.   It should be good.  

  • Thumbs Up 1
Link to comment
Share on other sites

Garmin acquired Navionics last October.  That could mean some improvements in the future.

If you have the plus version of the app you can get the updates. Every few days I hit update all.

It just about always has an update to download. If Garmin just completed a survey of Vermilion maybe Navionics will become more accurate.

Link to comment
Share on other sites

I have the LakeMaster chip on my Garmin GPS.  It doesn't have increments finer than 5 feet but does seem to be accurate.  Anybody else have an opinion on the LakeMaster maps?

Link to comment
Share on other sites

My brother has one in his lowrwnce handheld. He’s had that for 10+ years. It seems fine. I do notice navionics is more detailed somtimes but others it’s the opposite. It does it’s job well.

  • Thanks 1
Link to comment
Share on other sites

1 hour ago, JerkinLips said:

I have the LakeMaster chip on my Garmin GPS.  It doesn't have increments finer than 5 feet but does seem to be accurate.  Anybody else have an opinion on the LakeMaster maps?

I had them for years and other than the 3 foot contours thing, I found them to be pretty good.  Now using Lake insight that was bundled with my Lowrance elite units, and it looks just like the lakemaster data.  No complaints. 

  • Thanks 2
Link to comment
Share on other sites

Both Lake Master and Navionics chips work fine on Vermilion.

Cliff

  • Thanks 1
Link to comment
Share on other sites

Just received this email from Navionics:

Thank you for bringing your concerns to our Cartography Department.   Navionics appreciates your input.  We anticipate an update will be made available by 30 MAR 2018. I will contact you with instructions to receive the update once it has been released. Please do not hesitate to contact us if you have any questions.

Best regards,

Jennifer Pereira
Navionics Customer Service

  • Thumbs Up 2
Link to comment
Share on other sites

BTW, I do have Navionics+ but I let the app expire because I preferred the Lake Master.  But I will renew my Navionics in the hope that the Garmin influence will improve their maps.  

Link to comment
Share on other sites

On 3/9/2018 at 4:18 PM, mdogdaddy said:

Just received this email from Navionics:

Thank you for bringing your concerns to our Cartography Department.   Navionics appreciates your input.  We anticipate an update will be made available by 30 MAR 2018. I will contact you with instructions to receive the update once it has been released. Please do not hesitate to contact us if you have any questions.

Best regards,

Jennifer Pereira
Navionics Customer Service

Well, in less than a week Navionics followed up on the update.  I checked the Web app since it is an auto update and the new sonar view was there. Who knows maybe they improved on the rest of the lake since it was all charted last year.

 

Sonar2.jpg

Nautical-2.jpg

Link to comment
Share on other sites

Interesting.  I had let my Navionics+ subscription expire, so I went and checked my map for the area above, and it still has the old, incorrect sonar map.  I still get application updates that show up for the app, but obviously that does not include map updates.  And when I go to the Menu and click on updates, it immediately reminds me it is expired.  So when the app is expired, it looks like it is then a static map from the day it expired, no map updates.

Link to comment
Share on other sites

My Navionics app is so old that it doesn't even have an update option. It talks about having 3G and iphone 4s. I'm on version 5.0.4 with a GeoCore version of 01.00.03.

I assume that I would need to re-purchase the app to get anything useful, but I still find this old version to be helpful.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.



  • Similar Content

    • Raven77
      By Raven77
      Current Lake Vermilion Fishing Reports - Click Here.
      I'm new to this forum and new to Lake Vermilion.  We just purchased a cabin on the west end of the lake and I'm looking forward to learning as much as I can as fast as I can about the lake.
      I have snowmobiles and a portable shack so I can fish almost anywhere there is good ice.  I also have a 16' wheel house that we have used extensively on Lake of the Woods.  Does anyone on the west end of Vermilion plow ice roads to allow access with my wheel house?
      Thanks for any info you can provide!
      Chad
    • papadarv
      By papadarv
      Big change in Navionics Boating Apps. Dec. 19, Nanionics combined the Boating ($9.95 purchase $4.95 renew) and Boating HD ($54.95 & 14.95 respective) app into one app now called Boating Marine & Lakes HD. Now one annual subscription price of $14.99. When you open your Boating app ($9.95 / $4.95) app you will be directed to install Boating Marine & Lakes HD and your data will automatic transfer IF YOUR LOGGED INTO NAVIONICS. It's good until your subscription ends, than you buy another year at $14.95. Garmin added ActiveCaptain to the app which overlays "points of intrest" and ability to transfer map, markers etc. data to your Garmin comparable electronics. Very limited POI's on inland lakes found a couple on Mille Lacs & Superior. You ca add some if you wish.
    • JFitz
      By JFitz
      Hey all,
      The Lindner’s recently put up an episode of Al and Billy Rosner fishing Vermilion last October:
       
      I thought it was a good episode and it was really cool seeing such great anglers taking on Vermilion. I know it’s a bit early to be thinking about open water but this show got me to thinking. Has anyone here on the forum successfully targeted shallow, weed-oriented walleyes?? The video proves it can be done, but it’s just not a pattern you hear much about.
      Thanks!
    • Pat McGraw
      By Pat McGraw
      Anyone ice fishing the pike river flowage this year? Main lake or narrows upstream of Hwys 1 or 77? I may go this weekend. Thx
    • Pat McGraw
      By Pat McGraw
      Anyone know of a good ice fishing lake near vermilion? Perhaps something with a hot panfish bite.
    • Pat McGraw
      By Pat McGraw
      Has anyone targeted whitefish on Vermilion, specifically Frazer Bay? Any tips?
    • CarterJohn
      By CarterJohn
      Hello everyone I'm just looking for fishing reports in the BWCAW, Ely area. Thanks all
    • Savage Brewer
      By Savage Brewer
      Looking for some recommendations for cabins or other good places to stay on Vermilion.  Hoping to take my wife up for a weekend of ice fishing and then later this summer taking dad up for a while, so I am looking to see where the locals would recommend staying for either season.  For the winter season it would be nice to find a place that also has ice houses to rent, or possibly someone who rents sleeper fish houses as I would love to get on some night bite action.  For a place in the summer it would be nice to have either slips or a ramp onsite.  Pretty open to ideas at this point.
       
      Thank you 
    • magic_minnow
      By magic_minnow
      Any word on software updates?  Nothing since 2014.  Thanks in advance.
    • guideman
      By guideman
      The Smallmouth action was pretty good for us over the weekend. We spent some time chasing Muskies, however we spent most of our time pounding the Smallies. Docks were the most consistent locations, especially those with reeds near by. To my surprise, most of our fish were caught on spinner baits. We did get a few on sencos and I caught 2 on a Husky jerk.  I did my best to find a few that would take a top water, however all I got for my trouble was about a 15" Pike. We did manage to boat 8 or 10 that were in the 18 and 19 inch range  but most were 12 to 16 inches. One funny little tid bit is that we saw more Muskies while we were Smallmouth fishing than we did Muskie fishing.   
      "Ace"
  • Your Responses - Share & Have Fun :)

    • scrapeliner27
      Are these shells still for sale?
    • monstermoose78
      Finn and Hazel watching me like a hawk as have treats.
    • monstermoose78
      I heard some divers are showing up so I will go try for those
    • Wanderer
      Keep looking and sooner or later even a blind squirrel finds a nut.
    • Wanderer
      Very, very few ducks in Ely today.  4 grouse seen with only 1 coming back to camp.   I literally saw more fish today than birds.  And I skipped the fishing gear this time! 😒
    • monstermoose78
      Finn and I hiked the river in Sherburne and only saw 5 swans. 1000 cranes and not one duck or goose.  Saw some guys looking in the grass and they said they dropped a woodduck and Finn found it for them. Boy Finn was mad when I gave them the duck. 
    • JBMasterAngler
      Fished Black Brook Flowage (Apple River) today. This is my kinda lake! Very few houses, small little boat launch. Only caught 2 little pike. Missed a small Muskie, and seen a mid 30’s hovering under the boat. Was tough dealing with the wind, but I like this place. Fishing below the dam with waders is a possibility also. 
    • Wanderer
      I’d like to know what you have also.
    • jerkin'm
      I posted some of my not needed ammo on IDO…I could use some steel if you have it too…
    • LakeofthewoodsMN
      On the south end...  A really good week of fall walleye fishing.  Big numbers of fish being caught.  It should only improve as water temps get cooler.  This fall has been unseasonably warm. Big numbers of walleyes and saugers are set up along the south shore and anglers are catching a lot of fish.   Most anglers are anchored up and jigging with a fathead or emerald shiner.  Live shiners are available and effective.  There are still a lot of walleyes being caught on spinners with minnows surprisingly.  Trolling crankbaits has also been catching a lot of fish. The best reports are coming from 18-28 feet of water across the south shore in areas such as Pine Island, Morris Point, Zippel Bay, Graceton Beach, Long Point and Rocky Point.  Various schools within these depths.  In addition to walleyes and saugers, pike, jumbo perch, sturgeon and even a few crappies are in the mix for walleye anglers.  On the Rainy River...   Emerald shiners continue to run in the Rainy River and more and more walleyes are entering the river each week.  Fishing has picked up but most believe when water temps reach the 40's, it will get even better.  Currently, temps are in the low 50's. Jigging with a frozen or live shiner, is the go to method.  Emerald shiners are tough to beat this time of year.  Some reports of big fish being caught, but not in big numbers... yet.   Sturgeon activity continues good.  A gob of crawlers and/or frozen shiners on a sturgeon rig (18 inch leader made of 60lb test, circle hook and a 2-3 ounce no roll sinker) is the ticket.  The catch and release season continues through April 23, 2022. Up at the NW Angle...   Fall fishing up at the Angle continues to be excellent.  Most anglers are using a jig and minnow or jig and plastic.  Some strong reports with warmer than normal water of spinners with a minnow or plastic being the hot bait.  Gold, pink and/or glow colored jigs and spinners are doing well.  Reminder, no live, frozen or dead bait being able to be transported over the border from the U.S. into Canada, consequently anglers boating into Ontario waters reporting various plastics on their jigs and spinners working great. Various areas of structure such as points, reefs and sandy areas in neck down areas continue to hold good fish.  12 - 26 feet is the range depending upon the spot.   Big crappies are in their fall spots and being caught on jigs and minnows in 25-30' around various structure. Muskie anglers report good fishing overall.  Trollers reporting mixed results.  One day is great, the other not so much.  Covering water trolling is a strong fall muskie technique and should get better as water cools.    Travel to and from the Angle via vehicle through the 40 miles of Canada is open.  Boating into Canadian waters is now open.   Charter boat transport and float planes are still available through the LOW Passenger Service and Lake Country Air.    
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use and Privacy Policy. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.