Again: ShadedRelief or Multibeam from the pic ist he same, a raster with a defined cell size, each cell has a value and you can color the size value with a color, eg white to black.
The smaler the cell size, the better is a shaded structure and the more structure on the ground, the better you can find color diffrences, seen as ShadedRelief. If you have no structure – you only will find a monoton color.
The consequenze is, that a cell size from 5 … 10 m most is sufficient. RM can create smaler ShadedRelief rasters, but there ist the question: does it make sense?
If you use 3DSS datas, you can create ShadedRelief in RM with this and you will see, that the data densitiy is a great problem, you will need for bigger areas a high end computer, or you must use a bigger raster cell size. I’ve tested with 1 m 3DSS point distance (lesser distance is possible).
Your question for a sample: in some countries the government not allowed, to use high resolution data, also not for the sea map companies. In this case it's simple as an private user to create better charts as the commercial products. The raster cell size in RM is min. 2 m – what more do you want?
And if sea map companies present products with 0,5 ... 1 m depthline distance in such data restricted areas - this is only computing/simple interpolation from very few single points and mostly not the reality.
