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  Garmin 498C preloaded maps and Galveston Bays

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Author Topic:   Garmin 498C preloaded maps and Galveston Bays
mark9199 posted 02-28-2008 09:03 AM ET (US)   Profile for mark9199   Send Email to mark9199  
I am about talked into buying the Garmin 498C GPS/Sonar while they're still available. I am curious about the quality and detail of the preloaded maps, in particular for the Galveston Bay complex. I fish this area and am hoping that depths and contour are detailed similar to the NOAA maps. Any information is appreciated.

-Mark

Casco Bay Outrage posted 02-28-2008 10:40 PM ET (US)     Profile for Casco Bay Outrage  Send Email to Casco Bay Outrage     
Mark =

Garmin has very good customer service. I had a rewiring issue I did to myself and they patiently walked me through it. They even waited for me to get in the boat (in the backyard) and trace wires. Turns out I had a wire incorrectly set.

Give them a call and ask them to explain where they source their maps etc. If these units are preloaded, I would think a local retailer would have a unit in their store plugged in where you can see/play with it.

CBO

Andrewdavis34 posted 03-02-2008 11:39 PM ET (US)     Profile for Andrewdavis34  Send Email to Andrewdavis34     
Mark,

I just installed a 498 yesterday and took the boat out for a sea trial today. From what I could see on the map with regards to detail was very accurate for the area that I boat in (San Diego). Overall I am happy with this unit as it is very similar in operation the GPS72 that I have and provides more than enough sonar and navigational capability.

From what I have been told the mapping on this unit is the same as the new units minus the G2 vision. This was comfirmed by Garmin last week.

Good luck

Andrew

swist posted 03-03-2008 07:48 AM ET (US)     Profile for swist  Send Email to swist     
On the northern New England coast, the level of detail on my 492 is pretty much the same as the equivalent NOAA paper charts. Don't know why an important area like Galveston Bay would be any different.
boatdryver posted 03-03-2008 10:06 AM ET (US)     Profile for boatdryver  Send Email to boatdryver     
Mark,

I've had a 498C for two seasons. My boating is in a little travelled bay just north of San Francisco.

The sunlight visibility of the screen and the functionality of the controls are fine, but there is a significant charting deficiency in my area.

I have been disappointed in the level of detail within my boating area. When I zoom in to harbor chart detail there is plenty of detail (fine for fishing) but the screen is too small to show more than about a half mile of the bay.

When I zoom out far enough to show the full 6 mile length of the bay, for example to plot a course, all I get is shore outline with no depth information or marked geographical points. In other words, I have to guess where the cursor is exactly. this is not good enough for accurate navigation.

All this is in spite of going into the menu and doing all the tweaking possible.

I think this is because they had to make some compromises in order to include the "entire coastal U. S." If drop another $199 and buy the U. S. west coast cartridge this would correct the problem.

So I would urge you to try the unit in the shop and see if you are satisfied with how it performs in your area.

JimL

mark9199 posted 03-05-2008 08:15 AM ET (US)     Profile for mark9199  Send Email to mark9199     
Thanks for all of the replies. From other research and asking around, and the replies given here, I think the mapping will be good enough for my use (Bay fishing, cruising). I snagged a refurbished unit off of EBay last Friday ($430 delivered) and received the unit yesterday. Now if only I had the time to install it... It's turning into spring-like weather here now and my mower needs fixin', my grass needs mowin', I have trees to plant, a garden to tend to, and then the hunny-do's. Busy time of year but I will get to it as soon as possible. I'm anxious to try the Garmin out. Thanks again for the help.

-Mark

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