I've finally finished it
http://www.subsim.com/radioroom/down...o=file&id=4937
This is a mod that adds harbour charts to SH5 navigation map by making them available through the Charts TAB or by pressing 'E' in the default keyboard layout. This is assuming you're using a megamod or at least have enabled NewUIs with TDC for SH5 by The Dark Wraith. Read the documentation first and you should be fine.