BSB Charts that are not in WGS84 should be automatically converted to that datum when viewed in Offshore Navigator Lite. If OSN Lite is unable to perform this datum shift, a "datum error" will appear in the lower right hand side of the display. Click it for additional details.
You can perform this datum shift by hand by using the "Datum Calculator" found on the "Tools" menu.
-Ed Lecuyer
Senior Customer Support Manager