Unterwasserkorper mit einem hydrodynamischen Element zum senden und/oder empfangen eines Signals

The invention relates to an underwater body with a hydrodynamic element (101) for transmitting and/or receiving a signal. The hydrodynamic element (101) acts on a running characteristic, in particular the directional stability, of the underwater body during an operation in water, and the hydrodynamic element (101) forms a radio antenna. The hydrodynamic element (101) has an antenna surface (105), a short-circuiting connection (107) to a ground surface (109), and a feed line (111) such that the signal can be received and/or transmitted by means of the hydrodynamic element (101).