Never heard of Bob Geldoff? Have you ever heard of a small rock album called "The Wall" by any chance.
Both Bono and Geldoff have been politically active for 20 years.
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U.Kdt.Hdb B. I. 28) This possibility of using the hydrophone to help in detecting surface ships should, however, be restricted to those cases where the submarine is unavoidably compelled to stay below the surface.
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