Imray Seekarte G23 - Marmara Denizi 1:275.000

Plans included:

Türkeli & Pasalimani Islands (1:100 000)
Istanbul (1:45 000)
Princes Islands (1:60 000)
Approaches to Pendik (1:30 000)

On this 2018 edition the chart specification has been improved to show coloured light flashes. Various completed harbour works are included. Depths have been updated from the latest surveys where available. The latest firing practice areas are included. There has been general updating throughout.