Garmin's QuickDraw Contours Explained! - Create your own maps of ANY body of water!

QuickDraw Contours is a feature on most Garmin Chartplotters that allows you to map ANY body of water and create your own custom maps with up to 1' Contours!
This video will show you the basics as well as many of the great features of QuickDraw contours!

[@ms0099rg]

This the best video I have found for QuickDraw. Thank you and keep it up

[@ClearviewOutdoors]

Great explanation of the features, thanks and keep them coming!!!

[@kathyg4906]

Very helpful video. I hope to use this tomorrow on a small pond in my town. Thanks!

[@walterdowns9012]

Long-winded it is NOT... Very informative it is... Thank you for all your great videos

[@dirkcourtney174]

As usual Max you have been very very helpful. I am an old school bass fisherman that use to beleive all I needed was 2d sonar to help me catch more bass. Well I actually had to take a few years off from fishing and I am now full bore back into it. With your tutorals I have now entered the 21st century and am not only enjoying being able to see more it now is much more challenging going fishing. THANK YOU and keep up the good work. Im proof that you can teach an old dog new tricks

[@MGMarineTech]

Thanks for such a great comment Dirk! That mean a lot! I’ll keep them coming !

[@dirkcourtney174]

@@MGMarineTech Unfortunately....LOL I watched your video on the comparison of the GT54 vs the GT56 and now I have to save up some more money to get me a GT56. I now own a 73sv and a 93svUHD but unfortunately I misread the add and got the 93 with the GT54....after the video I HAVE TO get me a GT56. Once again you have outdone yourself on the how,why and what for video's. Now I want to put my GT54 on y 73sv echomap and get a GT56 for my 93svUHD.

[@dhwatts]

As always a great video!! Your video covered many of the features I wasn't sure about.

[@brettbock9712]

Awesome video. Thanks for the information. Thanks to your videos the learning curve on for my new Garmin is being shortened.

[@jimmycleveland1373]

Excellent information. Thank you for sharing. Your channel is great!

[@audiesimpson4965]

Thanks so much for the info on quick draw contours. This video has helped me greatly. THANKS YOU

[@MGMarineTech]

You are very welcome! That’s great to hear !

[@davidncw4613]

Very cool TY!! I want to use my Dingy to chart a safe route for my big boat. Quick Draw is the tool!

[@Horsewomann]

Hi fellow Michigander! I really appreciate your tutorial. I live about 20 miles north of you and will be using my Garmin Echomap UHD 93 sc to try and find a missing Navy bomber off shore of St Joe. I’m just waiting on getting my new outdrive on my boat and will hopefully be out this weekend to start! I’ll have a better idea what I’m doing thanks to you!

[@MGMarineTech]

Oh very cool!! I fish out of st Joe all the time!

[@georgiabill2283]

Thanks for the explanation! Your videos a very helpful.

[@rodrodgers3206]

Great video. Extremely informative and well explained. Very easy to follow your tutorial. Thanks. I think it's a bummer that to get the info onto your phone/ tablet you have to share them with everyone else.

[@jeffwatts4264]

great info max ill be watching lots of your videos as im a new user in uk

[@bmartin1785]

Great video man. I live in South Bend, IN, just purchased a Garmin Echomap unit. Funny to see your maps as I fish northern IN and southwest MI often!

[@MGMarineTech]

Yes sir! Just north of you!

[@morganboyd581]

Great info, thanks!

[@joshwillard6535]

Very Helpful! Thanks

[@mrwingshot]

thank you for your video! super helpful! im looking at purchasing a 73sv but i want to make sure i don’t have to purchase maps annually from active captain, it seems once i have the unit and an sd card i can make my own maps thru quickdraw, is this correct? or is an annual purchase needed as well to be able to quickdraw? owning a fish finder will be completely new to me and i want to make sure i get the right one! thanks again!

[@tlsmiffy]

Great video. Thankyou👍

[@logancutting32]

Thanks for the info!

[@onlymyopiniontech]

Great video. Here's a tip for you or anyone else trying to record your screen. Depending on the screen refresh rate and your fps of your camera you will get that rolling effect in your video. There's no perfect answer BUT try several different frame rates on your camera 24-60 fps and you can usually find a setting that will eliminate or minimize the flicker. Have a great day and be safe out there!

[@MGMarineTech]

Great tip thank you! I always try to record in 30fps as it’s just better for me in post. But definitely a good tip! Totally makes sense

[@willfara8463]

Thank you very much for taking the time to make the tutorial video. Perhaps you already know or someone else might know a couple of answers I need. 1.)When you use community edits they are stored on your SD card and only 1 file at a time>> is that correct? 2.) Now, since you can only have 1 file why not select a huge area rather than little selections since the files are relatively small>> my entire lake is only 2 meg for the file and its a 250 mile of shoreline lake. 3.) Now, my big question, since community contours come from individuals, the time that they make the survey will change and lake levels may also drastically change. The question is if someone scanned when the water was 10 ft high on the lake and someone else scanned when it was 5 ft low will this effect the representation on my map display? 4.) Could I possibly be updating my map with incorrect lake level depths because of this timing and lake level at scan time? Thanks for your help on these possible issues in advance

[@midnightsremedy]

Thanks -- good tutorial

[@DoubleTFishing]

Great video!!! Is there any depth adjustment you can make to the normal maps like you can the contour maps, I haven’t found a way. Thanks for all the information!!!

[@MGMarineTech]

To make depth adjustments to a factory map you have to have the ultra card. That will allow you to make offset the depths

[@charliebarks]

Thanks for the detailed video. Very Nice! Learned a lot. Just got a Echomap 93SV and installed it. Our lake is a reservoir that fluctuates yearly with water level depending on snow melt and irrigation. Last I heard it was at 18% capacity... but it is a large lake with approximately 36,000 acres so mapping the entire lake isn't feasible, especially with the changes in water level. Any suggestions on the best way to use the quickdraw on a lake like this? Would you just start over each visit? how does the Garmin handle the changes in depth? Thanks... appreciate you.

[@MGMarineTech]

Hey thank you, I would map it as you go, and keep track of the offsets. As water comes up you can change the offset and keep your existing scans accurate while mapping more of the lake

[@kwolf88]

Great info as usual… Would you be able to show what the process looks like to get QuickDraw maps onto your mobile phone?

[@Fiskeberoende]

I wonder this too, would be golden for ice fishing

[@michaelengelmeyer8271]

Great video; constantly review prior to going out for the first time after a long wnter. ????Question-I fish a lot in the Chesapeake Bay and it’s tributaries which are very tidal...normal +/- 2 feet. What’s the best way to adjust for depth when rcording??? Take an average for above or below and apply e.g. mid incomoing, use -1’...or if slack low iight in the middle of the time you’re recording, use +2’?......if that makes sense. Thanks Mike

[@MGMarineTech]

I would just adjust to a known depth spot. Say the ramp is 10’ in a specific spot (make a waypoint) and then the water is 2’ high that day make your adjustment there .

[@johnkese8953]

What is the impact on the quick draw contours when one re-records over an area, but the water level is , say 2’ “different “ , or always different by let’s say up 3-5’?? ( I am on a lake that is a “pump back” power generation lake and the water level literally varies by the day (even hour)…..AND I cannot remember what level was when the previous recording was made.) Per your recommendation, one benefits by recording the area from multiple passes at different angles. Incidentally, an EXCELLENT video, especially explaining what each of the setting do, which can be a puzzle.Thank you!

[@jamespalk6925]

When you do quick draw do you have your navionics map up?

[@user-cj7ec3wo8z]

awesome video, a lot of useful information in it. thanks. I have a question do i have to download the active captain app. to use the quickdraw contour mapping feature? i know i will have to if i want access to contours that other people made, but i just want to make my own maps. i feel like as soon as i insert an empty sd card it will prompt me to do the active captain.

[@MGMarineTech]

You do not need to download ActiveCaptain

[@pmaertens]

thank you so much for all these information, I would have on question about the heading sensor I have a ECHOMAP 95UHD SV it is not that accurate at Garmin they sale many devices and it is getting a little hard to understand for what I found there is a Steady Cast Heading Sensor and a GPS 24xd but this last one is offered in so many models 19, 38, 24, 58 hard to get good information have you been using one of those? can you help me choose? I'm fishing at low speed but intend to buy a Garmin electric motor so it can drive by its self but if the GPS is not accurate then I will be going every ware but where I want to !! ty

[@MGMarineTech]

Let me look into this a little more. The steady cast sensor. Is just searing sensor, I don’t know that it will make your units gps any more accurate. The gps sensors on the other hand will.

[@t1dsteve775]

MG, nice video. Question, is quickdraw compatible/accurate with the lvs32 transducer in down view?

[@MGMarineTech]

I believe it will work with any transducer including the live scope transducers.

[@slabbusterrtr7690]

Great vid man ..hey what is your opinion about the gt 56 uhd ducer u think it's alot better than the 54?

[@MGMarineTech]

I personally think it’s WAY better. I have a couple videos showing the difference between the two. If you want the best side imaging possible with the most range the gt56 is the go to transducer.

[@ernie9819]

Thanks for the great information you give us in your videos! I have a Garmin that has not be installed yet, my question is with Hummingbird they have a program where you can view the contour map on my computer. Can I do the same with the SD card used in the Garmin?

[@MGMarineTech]

Yes you sure can! There is a option to copy the built in maps to the sd card. Once you copy them you can view them in home port. OR The super simple way is just to use ActiveCaptain app and view them on your phone or tablet and be able to make waypoint and sync them too and from

[@ernie9819]

@@MGMarineTech Does it take a mapping program you need to purchase like Hummingbird?

[@MGMarineTech]

@@ernie9819 nope QuickDraw contours is completely free and just requires a sd card to be loaded to the unit.

[@frnkto69]

Which would you recommend based strictly on custom mapping between Lowrance hds9 live or Garmin echomap ultra?

[@MGMarineTech]

I’ve not used the lowrance for custom mapping, but I know the garmins works very well and you don’t have to buy anything special for it

[@Rileyoftherange]

Any idea why when I went to do current update with livescope now it wouldn’t let me use my card I had been using to map. When I use a new micro card it let me do the update but now I don’t have my mapping?

[@mrwhipper21]

Couple questions, I take it everything saves to the card and not to the unit so you have to have a separate card for each lake you are mapping, correct? How wide of a path does it record? The lake I am creating has a deep creek channel say 15 to 20 feet and immediately once you leave the channel it can jump up to weed covered flats from 2 to 10 ft deep. Does it only record the depth right below the boat or does side imaging come into play?

[@MGMarineTech]

Hi there. Good questions. 1 you do not need to have a different card for each map, but you can organize them that way if you would like. 2. As far how much of a area it records, I’m not 100% sure on that. I don’t believe it will be able to record a wider area when using side imaging. I believe it just uses the depth directly under the boat, but as far as how big that area is I can’t say exactly but from the looks of it, it looks as though it records about a 10’ wide path give or take. I find it’s best to cross cross your tracks to make the maps as accurate as possible.

[@robertteti2253]

Why isn’t my garmin 10 sv ultra not showing contour lines in the back bays. Do I need a contour card.

[@jedifredjacob]

I am from Quebec Canada.The species we fish is the speckled trout, the characteristic of this one is that it is held in less than 30 feet.The main technique to catch it is by trolling with a spoon followed by a hook with a worm. Of course it is quite rare with my Humminbird Mega Live G2N Si to distinguish these specimens even with the traditional sounder because as soon as one approaches them the shadow of the boat makes them flee immediately.In these circumstances if I acquire a Garmin GPSMAP 1222 with Panoptix Livescope System Touchscreen Chartplotter an investment of 4310 $ Canadian that can give me a certain advantage in the capture of this trout

[@MGMarineTech]

This is where side imaging is crucial! You can see what’s off to the sides of you without spooking fish.

[@STILLPHENOM]

Does a side scan give you depth of the sides too or we'd have to drive by over? I got 94sv uhd for my kayak. I can't ride it all over the place as I can only go so fast and far.

[@MGMarineTech]

That is a good question, I’m pretty sure this just relies on the 2d cone to determine depth and size of the area of influence. I have not noticed any difference when just running 2d V’s just side imaging etc

[@garrettpaul5626]

thanks for the video maybe you can help me. I just got my unit and used it for the first time today. using my quick draw I got the green circle but no depths displayed. any idea whats not turned on or what i'm not doing right thanks G

[@MGMarineTech]

Hello Garrett! It sounds to me like you are recording but you aren’t displaying the QuickDraw contours. Go to about the 2:15 mark of this video and it will walk you through how to turn them on/off etc. Thanks for watching !

[@walterdowns9012]

I have a Garmin echomap UHD G54 transducer just tried it out on mapping a lake yesterday and I have colours a light greenish, blue, yellow, and pinkish when I lifted the transducer out of the water... What do they mean

[@MGMarineTech]

where do you see these colors ?

[@After5Outdoors]

Biggest questions, do you need a special SD card like Humminbird requires, and can you use it with Livescope?

[@MGMarineTech]

Nope any sd card will work. And it will work with livescope but the same as a 2d transducer

[@robertteti2253]

When you showed you driving around mapping. Your unit showed all different contours. My 10 sv ultra doesn’t. Do I have something off. I fish back bays and ocean. Do I need a contour chip? I love your videos.

[@MGMarineTech]

You probably had your QuickDraw contours off but were still recording. Go into your QuickDraw settings and turn the view on. No special card is needed. Any SD card will do it

[@TheNajone]

Hey, great video. I wander if there any way to export that contour to pc and process them in another software? Because i want to make 3d visualization of it and i got stuck to open svy or qcc file

[@MGMarineTech]

That I do not know, sorry

[@sasasaponja]

Thank you for the explanation. Please can you tell me how to show it in colors only where I recorded with quickdraw..and the rest to be diferent blue or white colors. When I choose a color palette, everything is colored together, where I record and the other complete maps, so I don't know what is real and what is mine from 2-3m distance Thank you

[@MGMarineTech]

I don’t know that there will be a a way to only color the QuickDraw maps other than the portion I show in this video that basically shows the “quality” of the QuickDraw maps you currently have

[@yyamaha125cc]

Great video but one question. On my hummingbird I get in the boat and turn on charting everyday/ every time and it works well with no issues. Can I do this with a garmin? How long will a SD card last with for charting? And maybe I missed it but does garmin save each day you chart as a “separate “ chart or will it connect each day all together.

[@MGMarineTech]

I run mine every day as well no issues at all. It will just save them as one contour not separate days. As far as how much you can store on a card, well the obvious answer is that depends on the cards, the max size card you can use is a 32gb card. I have mapped a ton and have barely used 2gb and that’s with all the other stuff on the card as well like other downloaded maps etc.

[@yyamaha125cc]

@@MGMarineTech awesome! Thanks for the reply ! Keep em coming

[@MGMarineTech]

@@yyamaha125cc no problem! Yes running it every day will just make them more accurate. Just watch out for heavy weeds that can cause a false depth reading.

[@garysundman1725]

needs to be rewatched to learn all the tricks

[@rodrigoelgu]

is there a certain frequency you need to run on down view or sideview to make the map more accurate ?

[@MGMarineTech]

Nope, the QuickDraw works off of the 2d if I had to guess

[@dereckconnor3183]

When recording QuickDraw. Is it best to have the LSV32 in forward or down view?

[@MGMarineTech]

I’ve not used it with livescope. But I would say down so it has the best chance at a accurate depth.x

[@user-sz7fo1jm1w]

In general, the TI units are faster in response to inputs. This is seen when quickly switching between sonar, downscan, chart, and split screens kzbin.infoUgkxeAxH15LxhjGlg5-CRYqjTGTEH0tbY4vk recommend The Hook units will show some lag on button pushes and screen switching. The big ticket item though is maps. If you install a mapping card such as Navionics or the free C-Map Genesis which has a lot of map detail, then moving around the map with the cursor or when running down the lake can lag significantly on the Hook units, but is seamless with the TI units.

[@fishquestcrew]

Another great video, do you know if there is anyway to upload garmin quickdrawn maps to the community to share from the active captain app? I've loooked but can't see anything about it. Thanks

[@MGMarineTech]

You sure can. It’s the setting I show in the later part of the video. Called contribute to community. It will then allow you (and others) to see those maps on active captain

[@fishquestcrew]

@@MGMarineTech Thanks I'm gonna go check that out shortly

[@fishquestcrew]

@@MGMarineTech Thanks I checked the video and it does give me that option on the app. What I was hoping was I could select mapping I want to share as I hit some back lakes and put alot of work into mapping them and getting into them and not wanting to share all my spots with the world. Learned the hard way it post everything from your memory card to the community and its not coming off now, so I guess I'll have to run two cards one to share and one for my adventures. Thanks so much for the help once again.

[@Gareth96v1]

Is there a way to print the map you plotted onto paper? We want a paper copy of the depths around our duck blind to put in the duck blind as reference... thanks

[@MGMarineTech]

You could take a screen shot of your map and then print the picture. Zoom into the areas you want to see take a screen shot Load the sd card to a computer and have it printed

[@NinoSpinner]

can it also be done on Striker 5 Vivid?

[@MGMarineTech]

You know, I’m not sure on those unit. Do they have maps on them ?

[@LeifBirnbaum]

Is there a way to get user contours that you record from your chart plotter onto your phone app?

[@MGMarineTech]

Yes that’s covered in the video. There is a option you have to click on active captain. But when you do this EVERYONE will be able to see your charts you recorded

[@sunsetoriginals7320]

I’m having issues merging my new contours with older ones. Is there a setting that needs to be turned on for that?

[@MGMarineTech]

You know, that is a good question. The only way I can think of to merge them is to do it on a computer.. But I have never done it.

[@sunsetoriginals7320]

@@MGMarineTech well thanks for the reply. I may call Garmin the next time I’m on the water. I did call them once before for another issue I had. They were pretty helpful. I had a memory card that was “too new” so I found an older card that works much better. I also had a setting turned on that didn’t allow me to see my depth shading and they also helped me with that.

[@wayneallen3419]

Can you use your ActiveCaptain card to record on or do you need to use a different SD card for recording?

[@MGMarineTech]

You can use the ActiveCaptain card for recording

[@wayneallen3419]

@@MGMarineTech okay, thank you.👍

[@benjamingossett6859]

is there a way to remove the black and white boat route from my quickdraw contour? It clutters up the screen when I'm trying to view the depths chart I created.

[@MGMarineTech]

You can turn off “active tracks”

[@ikashibimauler]

So there is no bottom hardness overlay on your personal quickdraw maps?

[@MGMarineTech]

No there’s no feature for that that I know of

[@yyamaha125cc]

Is there a way to copy the QuickDraw contours to an SD card. I have a graph in another boat and want to put what I have mapped already onto the other graph. I can’t just move the card from unit to unit because we take both boats out at the same time. Any help would be fantastic!

[@MGMarineTech]

The QuickDraw maps are stored on the card. You should be able to go in and copy the quick draw folder on the card you have now and put it on a new card.

[@yyamaha125cc]

@@MGMarineTech can this be done on the graph or on a computer !? Thank you for the response!

[@MGMarineTech]

@@yyamaha125cc you will have to do that on a pc

[@donniedickerson8077]

Mapping has been the most difficult Part of fish finders for me ,

[@johnherman8861]

you ever fish Big Twin or Little Twin by Dowagiac?

[@MGMarineTech]

I have not. But that’s pretty close to me

[@charlesronk2989]

I was trying quick draw for the first time yesterday. I was in 42 feet of water but the quick draw was saying it was 62. I deleted the recording. It was a green circle while recording. Any idea as to how I messed that up.

[@MGMarineTech]

Sounds like there was a recording offset entered. I go over all the offsets in this video and what they do

[@daved2403]

Do you know whether you can use this on a Garmin 1222 (non-xsv) with just the livescope transducer? Thanks

[@MGMarineTech]

I’m not positive, but I don’t believe you can.

[@daved2403]

@@MGMarineTech I tried doing today and it kept asking me to insert a memory card. There were two cards inserted, so not sure why it didn't recognize them.

[@MGMarineTech]

@@daved2403 does the 1222 have maps at all? From my understanding it does not.

[@daved2403]

@@MGMarineTech Yeah it is a GPSMap series so it has maps - just doesn't have normal sonar. I swapped cards and it recognizes now, so will have to get back on the water and see if it actually records!

[@javiermorales1471]

Is there a way I can see the maps I’ve contoured on the active captin app

[@MGMarineTech]

Yes shown in the video there is a option on active captain to “contribute to QuickDraw community” your maps will be loaded to the communit and you’ll be able to download maps as well

[@ecb7575]

I used quickdraw contours to scan the contours of my grandfather's private pond yesterday. I chose not to share with community being that it's a private pond. My question is, how to I get this mapping on my mobile device or ipad? I paired it, yet it still wont show up on either device

[@MGMarineTech]

Unfortunately to get them to sync with the ActiveCaptain app and see them on your mobile device, you have to contribute them to the community

[@hammerfallen12345]

Hi! Is it correct that in this machine you can put any SD card and start recording? When i watched about hummingbird you have to buy a special SD card if you want to record more than 8h. The SD card cost about 80-90 dollar 🤨 I will go with Garmin if that's the case. Tired when manufacturer doing that kind of joke 😤

[@MGMarineTech]

Yes, you can use ANY SD card. There are requirements. It just can’t be bigger than 32gb and should be class 10 speed. But any card will work!

[@hammerfallen12345]

@@MGMarineTechOk! Thx, i found out that hummingbird have bottom hardness and vegetation on their map. Is it the same on Garmin? Sad if it isn't

[@bruno12746]

How do you transfer quick draw Maps from one unit to another unit without contributing to the community of maps

[@brycebersch5845]

How to do you get your user contours onto active captain app without sharing to quick draw community?

[@MGMarineTech]

You can’t unfortunately

[@bobhe1584]

Max , is there some I’m missing ? I went and drove around and did this . I know for a fact that that I went over a hump that isn’t on a map . I don’t see the hump I recorded. On map map . Can you please help

[@MGMarineTech]

Do you have more than 1 SD card? Do you have the QuickDraw contour maps turned on?

[@bobhe1584]

@@MGMarineTech yes and yes . But do I need two cards in my 106sv ?

[@MGMarineTech]

@@bobhe1584 you don’t need 2 cards no. 1 ActiveCaptain card will do it. The issue you are experiencing probably has to do with which card the QuickDraw is using or viewing from. You can select either of the cards to record to and view from

[@bobhe1584]

@@MGMarineTech ok, I’ll give it a try .

[@BerkakanVision]

can i download a quickdraw contour data and plot it in pc?

[@MGMarineTech]

I’m not 100% sure on that one, You might be able to open them up in “home port” and make changes etc

[@japonte5352]

Can you print your contour map? please explain.

[@MGMarineTech]

There isn’t a easy way to do it… You could bring up the area you want to print and take a screen shot on the device (I made a video that shows you how, but it’s very simple just hold the home button for like 5 seconds) You can then take that as card out and pop it into a computer and then print that picture of the maps. Hopefully that makes sense

[@dereckconnor3183]

Can you Sync your QuickDraw maps to your phone, Without uploading them to the community?

[@MGMarineTech]

Unfortunately no.. once you sync them to your phone they are uploaded to the community.

[@rocketsurgeon1746]

I just found out and would have bought low or bird before giving away my hard earned data to garmin for free

[@satunino6334]

Póngalo en español traducción al español en México también tenemos esos aparatos pero no hay nadie en quién hable y haga tutoriales en español

[@masomaf]

What i dont like is that you have to manage youre own colors and select a color per depth, humminbird is more intuitive on that part with autochart live

[@MGMarineTech]

Last I knew, with HB you could set your own depth colors as well, To me that’s a big plus. I like being able to change my depth colors to whatever I want.

[@masomaf]

@@MGMarineTech Jep humminbird has more color pallets with a certain gradient from one color to another, bit rainbow like. But the thing is you set only set which pallet and the minumum and maximum depth. For example you choose the color pallet were red is shallow and dark blue is deep. Then you choose which range it should cover. For example 0-30 feet, then everything 30 feet and deeper wil go dark blue, so if there is any point at the lake were its 40 feet, it will have the same dark blue color as 30 feet.Therefore the advice is to set the chart in the max dept range you would expect on the lake, however for detail on the shallow its better to go downwards in max range. The colors automatically adapt with the range you choose. For garmin each individual color has a low and high range. And you have to put it in manually for each color: lots of work.. When you fishing multiple lakes with variating max depths...then you have to program for each lake if you want to go for detail.

[@SC-hc7vy]

So you can’t use other functions while recording contours?

[@MGMarineTech]

What type of functions do you want to use? It should be fully functional still

[@SC-hc7vy]

I meant, when you are recording quickdraw contours, are you able to use sidevu, downscan and etc?

[@MGMarineTech]

@@SC-hc7vy yes you sure are I run QuickDraw on another networked screen entirely

[@AndorSolymos]

Guys guys guys guys guys guys

[@wyoprospector]

Active captain sucks, community charts do not show the waterway you are on, only areas that were charted, so it's very difficult to find a location. Also I used it on Lake Rouseau in Inglis, FL. It is totally inaccurate, this lake is very shallow with lots of stumps. The chart shows much deeper than reality. Totally useless and dangerous.

[@MGMarineTech]

Buy the upgraded maps…