Krummin Marina (Naturhafen Krummin GmbH)

Tucked away deep inside Usedom's nature park, Krummin is one of those off-the-radar spots that feels genuinely unspoiled. You'll find around 150 berths along wooden pontoons with timber stern piles, spread across two 25m head jetties and a 30m pier. The harbour sits right on the Peenestrom, surrounded by protected landscapes — it's the kind of place you stumble on and end up staying longer than planned.