developed, patented and produced by the Submarine Signal Company of Boston. The company produced submarine acoustic signals, first bells and receivers then transducers...

pioneered the production of shipboard radar systems, particularly for submarine detection. Raytheon ranked 71st among United States corporations in the...

or microphones. This development of submarine signals was spurred in 1901 by the founding of the Submarine Signal Co. in Boston and the development of...

A submarine communications cable is a cable laid on the seabed between land-based stations to carry telecommunication signals across stretches of ocean...

radio signals or celestial sightings, it allows the boat to navigate while remaining hidden under the surface. To maintain accuracy, the submarine must...

arranged in an array so that it will add the signals from the desired direction while subtracting signals from other directions. The array may be steered...

submerged signal ejector is a device used by submarines, similar to a torpedo tube. Although, instead of deploying weapons, it launches signal flares, smokes...

ballistic-missile submarine that served in the Pacific Fleet of the Soviet Navy. It was one of six Project 629 strategic ballistic-missile submarines assigned...

system defeated the German submarine campaign." A major contributing factor was the interception of German submarine radio signals and breaking of their code...

signals, using an add-drop multiplexer to divide and recombine the signals on the desired paths, the reconverting back to optically carried signals....