I got an older version of one of these via Amazon from Gzoomp last year before embarking on my 4th charter holiday in the Croatian Adriatic. The chart was more than adequate for our needs - a 150 mile or so triangular course around a group of now-familiar islands - though I did resort to the boat's own folio (not in English) from time to time. These charts are absolutely fine for the experienced cruising sailor operating in familiar waters - in actual fact I only ever drew one pencil line on it, and that was just to show a new crewmember roughly how long our passage would take on the first night. Outstanding value, especially bearing in mind most charter yachts have an electronic chart plotter anyway. Have just ordered the next one up the coast, hopefully for my next trip !