Exciting news for Lowrance users!
Lowrance have released a free tool, the
Navico Map Creator, which creates stunning maps for Lowrance devices in the AT5 map format. AT5 maps are compatible with a wide range of Lowrance units, from older LMS right through to the most recent Touch systems, with none of the issues that can affect the older LCM map format. AT5 format maps not only work better on Lowrance units, they offer many more features and possible map styles than did the LCM format, and over time ReefMaster will be updated to take advantage of many of these.
In a few weeks, we will release an update to ReefMaster that includes support for exporting contours in
shapefile format, with the parameters required for the NVM tool, as well as raster map backgrounds that can be used in AT5 maps to provide depth shading in more recent Lowrance units. This release will also contain the custom palette editor. The output files produced by ReefMaster will allow very simple use of the NVM; the files just need to be loaded, and the map "built" with a single button click.
The examples below show what will be possible with the next ReefMaster release; separate major and minor contours, with minor contours displayed only above a certain (configurable) zoom threshold, raster (coloured) background in a custom palette, and shorelines and islands defined using the boundaries of the ReefMaster map project.
Big thanks to Trevor at
Angling Charts for putting these maps though his Lowrance HDS10 emulator and generating these screen-grabs.
Zoomed out, with only major lines displaying:
Zoomed in, showing minor contours. The zoom level at which the minor lines show is configurable in RM:
Zoomed in, with a different palette used for the background:
A white background used in place of the depth colours. This is how maps look on older (pre-HDS) units: