Towards "aus enc one" - (Australian electronic navigation chart number one)

This paper describes the Australian Hydrographic Office Electronic Navigati on Chart (ENC) program covering the area from Weipa to Port Clinton, includ ing Torres Strait, the Great Northeast Channel and the Inner Route of the G reat Barrier Reef. It describes a novel approach whereby small scale charts are vectorised as low density data to present a backdrop, and the major sh ipping lanes are presented as an enhanced strip of high density vector data .