54°20′11″N 18°52′29″E / 54.33639°N 18.87472°E
Sobieszewo Island (Polish: Wyspa Sobieszewska; Kashubian: Sobieszewsczi Òstrów; formerly German: Bohnsack) is an island on the Baltic Sea, bounded by the Gdańsk Bay and the Vistula River. It is part of the city of Gdańsk.
The Leniwka (Polish pronunciation: [lɛˈɲifka], German : Mühlengraben) is the former name of the western branch of the Vistula (now Vistula) in northern Poland. It is 55.4 kilometres (34.4 mi) long, and flows into Gdańsk Bay, forming the borders of Sobieszewo Island. The Leniwka begins behind the lock in Biała Góra, where the Nogat, the eastern branch, also originates. The current Martwa Wisła is part of the Leniwka.
The Śmiała Wisła (Polish pronunciation: [ˈɕmjawa ˈviswa]) is a distributary river branch of the Vistula in northern Poland that flows to the Gdańsk Bay.
The Śmiała Wisła is a western border of Sobieszewo Island and was created during the 1840 flooding when it became a new mouth of the Vistula. Literally it means Daring Vistula.