
An Introduction to Bathymetry 195
FIGURE 10.4
Topobathymetry production of bENC
for ENCs) and encoded accordingly. The next step is the definition and attri-
bution of depth areas, i.e. areas enclosed by adjacent contour lines. The result
is a sort of electronic fair-sheet containing bathymetric data in S-57 format.
This fair-sheet could be used to update the bathymetry of the official ENCs
covering the relevant area. Data suitable for the production of high-density
bathymetry ENCs (bENCs) are collected by port and waterway authorities
on a regular basis. However, the data are usually not made available in S-57
format.
10.8 Differences between ENC, SENC,