I have a Raymarine e series chartplotter with Navionics gold charts and while these charts have lots of auxiliary information on them (marinas, fuel docks, etc. ) they appear to be missing some basic navigational information. Most notably I don't see the light characteristics of any lighted buoys ( Fixed, Flashing, Quick Flashing etc.). Now I know these charts have 'layers' that can be turned on and off but I've not found a layer with this information on it. Am I missing something or do these charts just not provide this data?