Structuremap; About Structuremap; The Structuremap Image; Structuremap Sources - Simrad NSS9 Evo3S Operator's Manual

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StructureMap

About StructureMap

The StructureMap feature overlays SideScan images from a SideScan source on the map. This
makes it easier to visualize the underwater environment in relation to your position, and aids
in interpreting SideScan images.

The StructureMap image

StructureMap can be displayed as an overlay on your chart panel. When StructureMap
overlay is selected, the chart menu increases to show the StructureMap options.
The example below shows a chart panel with Structure overlay, combined with a traditional
SideScan panel.

StructureMap sources

Two sources can be used to overlay Structure logs on the charts, but only one can be viewed
at a time:
• Live data - Used when SideScan data is available
• Saved files - recorded SideScan data that are converted to StructureMap (*.smf) format
Live data
When live data is selected, the SideScan imaging history is displayed as a trail behind the
vessel icon. The length of this trail varies depending on available memory in the unit and
range settings. As the memory fills up, the oldest data is automatically deleted as new data is
added. When increasing the search range, the ping speed of the SideScan transducer is
reduced, but the width and the length of the image history is increased.
Ú Note:
Live mode does not save any data. If the unit is turned off, all recent data is lost.
Saved files
Saved mode is used to review and examine StructureMap files, and to position the vessel on
specific points of interest on a previous scanned area. Saved files can be used as source if no
SideScan sources are available.
With this mode selected, the StructureMap file is overlaid on the map based on position
information in the file.
If the chart scale is large, the StructureMap area is indicated with a boundary box until the
scale is large enough to show Structure details.
Ú Note:
When saved files are used as the source, all StructureMap files found on the
storage device and in the system's internal memory are displayed. If there is more than
one StructureMap of the same area, the images overlap and clutter the chart. If several
logs of the same area are required, the maps should be put on separate storage devices.
StructureMap| NSS evo3S Operator Manual