once you get out there cruising somebody will 'give' you a copy of the Russian version of world wide
C-Map. once it is in the computer and linked to the
GPS you have world wide charts.. When I was in
Indonesia I 'ran out' of paper copies of the area so spent some time 'screen printing' enough charts on A4 to get me out of trouble if the lap top died... Most plotters seem not to have the entire world available... Not sure why.
<br>Michael