Basen Północny Marina (Ośrodek Sportu i Rekreacji "Wyspiarz")

Basen Północny is one of the largest marinas on the Polish coast, tucked into a sheltered basin on the left side of the entrance to the Baltic Sea — so you get big-water access without big-water chop. Surrounded by greenery, it's a surprisingly calm spot given how much is going on around it. You're right in Świnoujście, a lively border town with beaches, restaurants, and ferry connections to Germany just a short ride away.