Baltic sea charts and advice ?

Hi all ( again !),

We plan to sail from Holland into the Baltic sea , running a full programme over 4 months taking 2 or 3 guests at a time in 2016. ( we will upload onto our Remote Adventures site shortly).  Has anyone sailed in this area – any suggestions on countries / locations appreciated as we are pulling our programme together presently. Also keen to purchase a full compliment of paper charts – ideally pre used and pre loved ! To save money and environmentally friendly. Any suggestions ?

Andy / Sian
Mahi / Remote Adventures