This is the Corrib G2 sample chart for use on Garmin GpsMap Chartplotters.

Take a clean SD card, make a folder on it called "Garmin", extract the file from the zipfile and place it into the new folder. The Chartplotter will find it as soon as you insert the card.

The G2 unit does not recognise custom objects such as the marking system on Corrib, so the chart is designed to interpret the marks as though they are IALA standard marks.