A Report on Security of Overseas Transport. Volume 1. Project Hartwell. Open PDF Document Details Document Type Technical Report Publication Date Sep 21, 1950 Accession Number ADA800012 Entities Organizations Massachusetts Institute of Technology Tags Communities of Interest Air Platforms Ground and Sea Platforms Weapons Technologies DTIC Thesaurus Topics Aircrafts Amplitude Modulation Boats Detection Direction Finding Doppler Effect Heat Energy Navigation Navy Network Science Nuclear Weapons Position Finding Radio Frequency Radio Transmission Repetition Rate Warning Systems Wave Propagation