Report on Pro-Submarine Program of Sound Division, NRL Open PDF Document Details Document Type Technical Report Publication Date Apr 05, 1945 Accession Number ADA458612 Entities People H. C. Hayes Organizations United States Naval Research Laboratory Tags Communities of Interest Ground and Sea Platforms Weapons Technologies DTIC Thesaurus Topics Acoustic Equipment Cathode Ray Tubes Detection Directives Distortion Echo Ranging Echoes Frequency Frequency Bands Geometric Forms Measurement Navy Range Finding Ships Sonar Equipment Submarines Temperature Gradients