Anchorages in Turku Archipelago

Advanced navigation — experienced Baltic sailors only

The Turku Archipelago is one of the world's most challenging navigation environments — 50,000 identical-looking granite islands with minimal aids. Electronic charts and constant GPS awareness are mandatory. Isostatic uplift of 5mm/year means some chart data is dangerously outdated. Use current Navionics or Finnish Maritime Administration charts at all times.