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Active centering apparatus with imbedded shear load sensor and actuator
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Flextensional sonar transducer assembly
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Flextensional sonar transducer assembly
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Two-dimensional piezoelectric transducer assembly
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Line array transducer assembly
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Flexible piezoelectric transducer assembly
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Underwater tow system and method
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Towing under-water vehicle
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Method and apparatus for detecting the presence of liquid
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Shock-hardened, high pressure ceramic sonar transducer
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Film processor apparatus
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Graphic recording system
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Sonar/television system for use in underwater exploration
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Method for searching a medium
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Pulse doppler and navigation system
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Electronic docking guidance system
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