What is the Chart Viewer extension?
The Chart Viewer extension is a combination of Avenue® and C code to read the digital version of NOAA nautical charts as an image and display them in ArcView®. The nautical charts are in BSB file format. This is a proprietary format of BSB Electronic Charts, LLP (bought by MapTech, Inc.). Operations available for image file formats may be performed on the digital chart. A short paper is available discussing the extension.