About five kilometers north of Gdynia at Babie Doly (german Hexengrund), the Germans began in 1940 to build a test and research center for torpedoes with the intention of being fired from torpedo boats and aircraft. Until then, they had been dependent torpedoes purchased from Italy that were ahead of the Germans in the field. The test facility itself was placed in a bay with calm water and at the time a proper distance from hostile bombers. Nearby there was also a commenced Polish air base completed by the german air force. A railway was built to transport torpedoes from the test facility to the air base. Other buildings were constructed for various purposes. From 1942 intensive tests were carried out by a torpedo called F5B, which was also adapted for aircraft. In the final stages of the war, the test facility was conquered by the Soviet Red army.

Current status: Demolished (2021).

Location: 54°35' 08.59" N 18°32' 16.31" E

Get there: Car.

My comment:

It is a strange feeling and sight you meet when you come down on the beach. Scarcely 400 meters out, there is a huge stripped-down concrete block reminiscent of an abandoned base from any Star Wars movie. For those who have access to a boat, it is safe to go out and climb up on it when the tide is right. To what extent it is allowed I don’t know, but probably not. It may be protected as a nature conservation object. Closer to the beach there are remnants of piers and on land there are various concrete blocks and buildings that probably were part of the test facility.

Follow up in books: Killen, John: The Luftwaffe: A History (2013).