chore: update docs

SignalK · Mar 3, 2024 · 13878e3 · 13878e3
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 - **Added**: Ability to show/hide toolbar buttons on both sides of the screen.
 - **Added**: Route builder. 1st release allows creating a route from waypoints.
+- **Added**: Support for displaying S57 vector charts converted using [s57-tiler](https://github.com/wdantuma/s57-tiler).
 - **Fixed**: Wind speed values in vessel popover showing 0 rather than - when no value is present.
 
 ### v2.5.0

diff --git a/README.md b/README.md
@@ -117,20 +117,27 @@ _Note: The `Signal K Instrument Panel` app will be displayed if no user selectio
 
 ---
 
-### S57 charts
+### S57 Charts
 
-Freeboard-SK is able to display S57 ENC's converted to vector tiles with [s57-tiler](https://github.com/wdantuma/s57-tiler), see the s57-tiler README for instructions how to create the vectortiles from downloaded S57 ENC's. Only unencrypted ENC's are supported ( no S63 support). Also the   @signalk/charts-plugin *(Chart paths)* needs to be installed
+Freeboard-SK is able to display S57 ENC charts that have been converted to vector tiles with [s57-tiler](https://github.com/wdantuma/s57-tiler). _(See the [README](https://github.com/wdantuma/s57-tiler) for instructions how to create the vectortiles from downloaded S57 ENC's.)_
 
-See [Open CPN chart sources](https://opencpn.org/OpenCPN/info/chartsource.html) for a list  of possible download locations 
+See [Open CPN chart sources](https://opencpn.org/OpenCPN/info/chartsource.html) for a list of locations to source charts.
 
-![S57 Chart](images/S57%20chart.png)
+_Note: Only unencrypted ENC's are supported (no S63 support)._
+
+**_Requires: @signalk/charts-plugin_**
+
+
+![S57 chart](https://github.com/SignalK/freeboard-sk/assets/38519157/a93b3889-d1c8-4df7-9f6f-97a1666fbf77)
 
 Rendering of the Shallow, safety and deep depths and   can be configured in the settings dialog
 
-![S57 Settings](images/S57%20Settings.png)
+![S57 Settings](https://github.com/SignalK/freeboard-sk/assets/38519157/0409492b-1ee7-4905-b5b0-e5fc8e68bc9a)
 
 _Note:  This functionality is not a replacement for official navigational charts_
 
+---
+
 ### Experiments: 
 
 Features that are not ready for "prime time" are made available as experiments.

diff --git a/images/S57 Settings.png b/images/S57 Settings.png
diff --git a/images/S57 chart.png b/images/S57 chart.png