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Fundamentals of major electronic equipments on board ships are presented in this text prepared for naval officers in general. Basic radio principles are discussed in connection with various types of transmitters, receivers, antennas, couplers, transfer panels, remote-control units, frequency standard equipments, teletypewriters, and facsimile installations. Theoretical and practical analyses are made of radar and sonar equipments to show their capabilities and limitations. On the subject of electronic navigation, loran, shoran, omega, tacan, and satellite and ships' inertial navigation systems are presented. Also included are descriptions of digital computers, gun and missile weapon systems, direction finders, closed-circuit television sets, electronic countermeasures, communication console equipments, underwater telephones, intrared and meteorological setups, carrier control approach systems, radiac instruments, and target control installations. Illustrations for explanation purposes and a glossary of general terms are included. (CC)

Discusses the Doppler effect as it applies to different situations, such as a stationary source of sound with the observer moving, a stationary observer, and the sound source and observer both moving. Police radar, satellite surveillance radar, radar astronomy, and the Doppler navigator, are discussed as applications of Doppler shift. (JR)

Presents data on aircraft take off and landing, including measurements of turning speeds, triangle of velocities method, fuel consumption, air pressure differences, air turbulence, maintenance inspection, and airborne radar. Indicates the materials can serve as relevant physics examples in teaching sixth and seventh form pupils. (CC)