some BSB 2 maps downloaded for example at http://www.1yachtua.com/nauticalcharts/free_charts.asp shows a black screen
corrected by task https://sourceforge.net/tracker/?func=detail&aid=2798790&group_id=100698&atid=1045270
corrected by task https://sourceforge.net/tracker/?func=detail&aid=2798790&group_id=100698&atid=1045270