Stormälön Mariina and Stormälön Pikkusatama – seasonal renting of boat berths Stormälön Mariina and Tapani Johanssons Stormälön Pikkusatama have around 280 boat berths. Ideal location for boaters. There are no ferries, only 40km (by road ) from Turku and a good spot near Airisto and sheltered from wind on the northeast side of the Stormälö-island. Stormälön Mariina was founded in 1985 and Tapani Johansson has been involved in the business since 1987. The area has been into boat docking since the 1970´s. From 2008 Stormälön Mariina has been a family business.