On this 2018 edition the chart specification has been improved to show coloured light flashes. The chart has been reschemed and is now portrait so to include the passage to Crete. The overlap with adjoining chart G16 has been reduced so G15 now shows the area Kalamata to Nisos Kriti and Akra Tourkovigla. The latest harbour works at Yithion are included as are the completed harbour works at Monemvasia (Yefira). The harbour plan of Koroni is not included in this edition. There has been general updating throughout.