Vistula Lagoon Vistula Lagoon The Vistula Lagoon (; or "Kaliningradskiy Zaliv"; ; ) is a brackish water lagoon on the Baltic Sea roughly 56 miles (90 km) long, 6 to 15 miles (10 to 19 km) wide, and up to 17 feet (5 m) deep, separated from Gdańsk Bay by the Vistula Spit. It is now known as the Vistula Bay or Vistula Gulf. The modern German name, "Frisches Haff", is derived from an earlier form, "Friesisches Haff". The lagoon is a mouth of a few branches of the Vistula River, notably the Nogat, and the Pregolya River. It is connected to
Battle of Vistula Lagoon Battle of Vistula Lagoon The Battle of Vistula Lagoon ( or ) was fought on September 15, 1463 between the navy of the Teutonic Order, and the navy of the Prussian Confederation which was allied with the King of Poland, as part of the Thirteen Years' War. The battle was the largest naval battle of the war, and one of the two battles (along with Battle of Świecino) which decided the final outcome of the war. The Grand Master of the Teutonic Order, Ludwig von Erlichshausen, led the Teutonic fleet, in an attempt to come to the aid of the