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 which were staffed with five hundred men armed with crossbows and arquebuses. To delay the enemy, they sank a galley at a narrow part of the Vistula, which blocked the entrance from the lagoon to the river. Coming upon the obstacle, von Erlichshausen stalled long enough for the Elbing ships to join up with those of Danzig. Together, the two cities had around 30 ships of various types, 600 to 700 armed men, and a similar number of sailors manning the ships themselves. Von Erlichshausen ordered a withdrawal into the lagoon where his ships bunched up close to the shore.