[GPSNavX]

No you are not losing your marbles. The S-57 ENC organizes the data such that each cell (chart) is in a different file (in a folder under the catalog file). These cells are made up of 1000's of features (objects) that are made up of 1000's of lines or points. Each feature has a minimum scale at which it will be displayed.

Since MacENC is designed to work straight from the (NOAA) S-57 ENC data it is definitely oriented towards the cells. It would be both memory and time prohibitive to load every cell and flatten it into one giant cell.

What some chart app developers have done is make their own version of the S-57 ENC data and call it SENC. Instead of organizing it by cells, they have organized it by what is displayed at any given scale. The downside is now these apps require you to use their proprietary versions of this S-57 ENC data which they charge for. CapN 8.0 is a good example of this. So not only do you have to pay $400+, but you have to pay for the charts!!

I wanted the MacENC users to be able to use the very latest S-57 data without having to pay for a special proprietary version of the *free* data.

Each release of MacENC will continue to improve upon rendering speed performance.