To enable creation of RealBathy™bathymetric contours in real time follow the steps
below:
RealBathyChartRealBathy
Important
You will need to know the distance above the bottom face of
your transducer to the waterline.
For tidal environments LightHouse™ NC2 cartography is required that includes tide station
information for your location.
- Insert your LightHouse™ NC2 chart card into the display’s card reader.
- Select your LightHouse™ chart card as your cartography for the Chart app.
- RealBathyWaterline to tdcrEnter the distance above the bottom face of your transducer
to the waterline in the Waterline to tdcr: setting
field.
- Enable the RealBathy; toggle switch,
located in the Depths menu:
- RealBathyHeight correctionSelect the relevant Height correction option:
None — No corrections are made.
Tidal — Uses nearby tide station data
to correct height. When Tidal is selected a tidal
station search is performed and a list of available stations is displayed.
Select the closest tide station to your location.
Lake level — User specified value using
the water level marker for your location.
Note To ensure accurate contour depths it is recommended
that:
in tidal environments (e.g.: seas and oceans) you use LightHouse™ NC2 cartography that includes
tide station information and select the tide station closest to your
location, or
in fresh water environments (e.g.: lakes) select Lake
level in the Height correction: field
and then enter the current reading from the water level marker for
your location into the field located under the height correction option.
- RealBathyVisibilityAdjust the Visibility: setting to the desired
transparency.
100% provides full visibility of the RealBathy contours, as
the percentage decreases the chart detail behind the RealBathy contours
becomes more visible.
- RealBathyDensitySelect the required Density: setting.
Steep drop-offs can result in overlapping contour lines, lowering
the density in these situations provides a clearer view.