In the Langelandsfort museum there are a total of four 150 mm artillery bunkers and two 40 mm anti-aircraft bunkers. One of each is open to the public. The other bunkers can only been seen from the outside, but they are identical to the open ones. A total of 14 bunkers were built of reinforced concrete.
If you descend the stairs into the bunker “North”, you come to the gun tub, where you can admire the gun, which could fire 240 rounds per minute. It could not only be used against airborne targets, but also against targets on land. The grenades were stored in slotted racks, which were attached to the walls. After each shot, the empty cartridge was ejected into a special hole under the floor. The gun crew consisted of four gunners and two ammunition handlers. If you continue down the stairs, you will see three rooms. The first room on your left is the ammunition storage depot for the 40mm grenades. These were stored in tin boxes. The second room is the fire control centre, which was closed down in 1982 and is empty now. The equipment was removed. To see what it used to look like, click on the b/w photo below. On your right is the crew room, which also contains the ventilation equipment. The room has six bunks. The war-time crew consisted of 9 men. If you leave the anti-aircraft bunker, it is worth while to climb up into the fire-directing tower, which offers a superb view,
The next room is the ammunition depot. You will see a soldier, wearing battledress and an artillery helmet, who is preparing a grenade. The room is equipped with storage racks for the grenades. For safety reasons, grenades, cartridges and fuses were stored separately. The grenades entered the elevator room from the right hand side; the cartridges entered from the left. Both parts were then transported upwards to the gun by means of an electric elevator, which was constructed in Denmark. When electricity was not available, the elevator could be operated manually from a room underneath it. The cartridge cases were stored in the loading room, which consists of two parts. The fuses were stored in a separate small room. There is also an emergency elevator, which can be operated manually by means of a crank and chain. In this room there is also an emergency exit. All bunkers were equipped with such emergency exits, so the crew could escape if they were ordered to blow up the bunker. Demolition charges could be laid in certain parts of the construction and be detonated.