Ground shark (submarine)
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The basic shark was a drawing board study for a deep-sea micro-submarine of the German Navy towards the end of the Second World War , which did not go beyond the development concept.
Development history
The impetus for the conception of a deep-sea micro submarine came from the fact that the Kriegsmarine did not have any equipment to rescue damaged submarines and their crew from the sea floor. The only available tank diver from the company Hagenuk from Kiel could only operate up to a water depth of 150 meters. Beyond this depth, the joints of the diving device could no longer be moved due to the high water pressure.
The basic shark should be designed for a water depth of up to 1,000 meters and have all the necessary submarine components such as trim and control cells as well as three powerful headlights . Since the boat did not have to be designed for overwater travel, it was designed with an almost rectangular floor plan. The bow , however, was rounded and the stern was pointed. At the stern a plexiglass dome and the steering gear were housed. The drive consisted of two electric motors , which also functioned as a down elevator and could be operated independently of each other on the left and right of the bow. In order to be able to drive on the seabed, the ground shark should have two caterpillars on four wheels; it could have rolled ashore or safely parked on the deck of a ship. The crew should communicate using a telephone cable connection to the mother ship and a UT device for Morse code .
The main tool for recovering a sunken submarine was a magnetic gripper arm that would have made it possible to attach lifting balloons to the crashed submarine. Such lifting balloons were available with load capacities of 250, 500 and 1000 t . Two 250-tonne lifting balloons, which were to be attached to the bow and stern, were sufficient to lift a 500 t submarine. Balloons of the 250 t version had a diameter of eight meters and a height of 14 meters and tapered to a point at their lower end. A hose connection with a hose was placed at its upper round end, which reached to the surface of the water and from there to the anchored mother ship. If the balloons were securely attached by the ground shark , they should be filled with compressed air and the sunken boat should be lifted with the buoyancy gained.
literature
- Helmut Blocksdorf: The command of the small combat units of the navy. The "Storm Vikings". 1st edition. Motorbuch Verlag, Stuttgart 2003, ISBN 3-613-02330-X , pp. 139–140.