Hi Guys,
Above Heston says they're 'charts, not maps'. This is interesting. When I first began to learn to fly in the late 1950s, my ex RAF instructor taught me that maps were used to describe land and charts were used to describe water. In effect, every topographical feature above sea level, (i.e. mountains, coastlines, forests) would be shown on a map and everything below water level, (i.e. sandbanks, reefs, channels) would be shown on a chart. When I came to do ATPL ground school and was asked to call both 'charts' I asked my college instructor (also ex RAF) what was going on? He replied that the term charts had been decided by JAA as the correct term to use irrespective of whether the features described were above or below sea level. In short, the use of the word 'chart' for what are properly maps is EU speak. For that reason I no longer use the word chart for my maps.
Best regards,
BP