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#1 2017-08-02 09:05:26

Ironicsven
Member
From: Flensburg, DE
Registered: 2015-05-03
Posts: 30
Website

AT5 charts for Lowrance, Simrad and B&G

Just in case you didn't notice... there are new AT5 charts which are updated twice a month:
https://wiki.openstreetmap.org/wiki/AT5 … mrad_B%26G

I'm the new maintainer for AT5 and would be glad to receive some feedback and improvement suggestions.


Best regards
Sven


OpenSeaMap AT5 charts maintainer

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#2 2017-08-13 11:11:42

Rockpool
Member
Registered: 2016-02-01
Posts: 4

Re: AT5 charts for Lowrance, Simrad and B&G

Hi Sven

The latest charts are a great improvement! I tried the charts on my B&G Zeus plotter earlier in the year and was rather disappointed. There were numerous errors in the coastline which made the charts virtually unusable. Many bays and estuaries were missing with straight lines across the mouth.

The new version (this week's) is very good when zoomed in. The only problem I've noticed is that as I zoom out rivers & streams become more prominent and this continues until the land is unrecognizable whereas they should become less prominent and eventually disappear. Roads, which I presume are similar linear features, behave correctly.

I'm using version A12. I've tried A13 but only got a crude outline basemap. I haven't tried A10 yet.

Thanks for your good work!
Bob

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#3 2017-08-13 11:34:42

Ironicsven
Member
From: Flensburg, DE
Registered: 2015-05-03
Posts: 30
Website

Re: AT5 charts for Lowrance, Simrad and B&G

Hi Bob,

could you please provide me a screenshot and a location (preferably coordinates) where rivers and streams are to prominent? I need an good example to improve the maximum zoom levels.

There is no difference between A10 and A12 regarding zoom levels.

Best regards
Sven


OpenSeaMap AT5 charts maintainer

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#4 2017-08-16 06:03:38

fjanus
Member
Registered: 2017-08-09
Posts: 7

Re: AT5 charts for Lowrance, Simrad and B&G

Hello Ironicsven,

sorry for posting in the wrong thread, posted to your initial thread a feedback to Lowrance Maps. See there.

rgds

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#5 2017-08-17 17:07:51

Rockpool
Member
Registered: 2016-02-01
Posts: 4

Re: AT5 charts for Lowrance, Simrad and B&G

Hi Sven

I've got some screenshots (7) which show the problem on zooming. How do I send them to the forum?

I've now tried the A10 charts and they are a bit better - the small streams do eventually disappear as I zoom out but so do some important navigation buoys.

Best regards,
Bob

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#6 2017-08-19 07:11:45

Ironicsven
Member
From: Flensburg, DE
Registered: 2015-05-03
Posts: 30
Website

Re: AT5 charts for Lowrance, Simrad and B&G

Rockpool wrote:

How do I send them to the forum?

I've tried to send you my E-Mail address. Please check your inbox.


Best regards
Sven


OpenSeaMap AT5 charts maintainer

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#7 2017-08-21 16:08:51

Axel
Administrator
Registered: 2015-11-13
Posts: 49

Re: AT5 charts for Lowrance, Simrad and B&G

Rockpool wrote:

I've got some screenshots (7) which show the problem on zooming. How do I send them to the forum?

Have a look to the Forum help: https://forum.openseamap.org/viewforum.php?id=11

Due to security reasons you can not directly upload files to our forum. You have to upload them somewhere else and embed them via links.

Regards,
Axel


Axel Utech, OpenSeaMap developer

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#8 2017-09-22 09:00:49

Rockpool
Member
Registered: 2016-02-01
Posts: 4

Re: AT5 charts for Lowrance, Simrad and B&G

Hi Sven,

I've just tried the mid-September version of the charts on my B&G Zeus T7 plotter.

The A13 version still doesn't work. I mainly just get a crude outline of the coast but at certain zoom levels I do now get some roads and rivers.

The A12 version is much improved! The rivers and streams disappear as I zoom out just as the other land features do. This means the chart is usable at all zoom levels. However navigation marks and traffic separation schemes also disappear when, I feel, they should still be visible.

The A10 chart appears to be the same as the A12.

Thank you for your efforts - just some fine tuning needed now!

Regards, Bob

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#9 2017-09-22 12:26:55

Ironicsven
Member
From: Flensburg, DE
Registered: 2015-05-03
Posts: 30
Website

Re: AT5 charts for Lowrance, Simrad and B&G

Hi Bob,

I'm sorry but I couldn't find any spare time to finish working on your findings yet.

Is your plotter using the latest firmware? v13 should look the same like v12 or shouldn't work at all.

Regards
Sven


OpenSeaMap AT5 charts maintainer

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#10 2017-09-26 16:52:18

Rockpool
Member
Registered: 2016-02-01
Posts: 4

Re: AT5 charts for Lowrance, Simrad and B&G

Hi Sven

I've just double-checked that I am using the latest version of the firmware although it is dated 2014 as the plotter has been superseded.

Best regards,
Bob

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