Schneider 75 mm guns were placed, post of four Soviet-made B-34U 100 mm guns (1955), with one of them still located there, six posts of the Schleswig-Holstein battery. They were built by the Germans in 1940. Made of reinforced concrete, they displayed three 40,6 centimeter guns SK C/34 "Adolf". Together with posts, bunkers, observation tower, and magazines for ammunition were built, battery number 31 – located at the headland, battery number 33 ("Greek") (originally two field guns Schneider 105 mm), in mid-distance from Hel to Jurata, battery number 32 ("Danish") (originally two field guns Schneider 105 mm), at northern tip of the town of Hel, battery number 41, west of Jastarnia, aimed at the Gdańsk Bay, battery number 42, east of Jastarnia, aimed at the Baltic Sea, battery number 43, near the port of Władysławowo, on 8 September 1939, moved to Chałupy, in Jastarnia, there are four bunkers of the main Polish line of land defence. These bunkers are named Sokół, Sabała, Saragossa, and Sęp. In 1999, the fortifications of Hel were added to the Polish military monuments register. All information about Hel and it's Fortified Area you can find in Hel Tourist Guide (in English), 2019 year, ISBN 978-83-65092-30-4. See also Sarny Fortified Area Fortified Area of Silesia References External links Remnants of the German Schleswig—Holstein battery 1936 establishments in Poland Borders of Poland Invasion of Poland 1939 in Poland Military history of Poland during World War II Military operations involving Poland World War II defensive lines World War II sites in Poland Pomeranian Voivodeship (1919–1939)