Defence National International Industry. International UAE. Saudi Arabia. US Elections World News. Rate Story. Font Size Abc Small. Abc Medium. Abc Large. When were submarines first used in war?
By early 18th century , many inventors had made designs of vessels that could travel on the surface of water as well as under it. The American revolution was the first war that witnessed military deployment of such boats. ETPrime stories of the day Investing Bad bet or value buy? Logistics There is a base, Gati hasn't destroyed itself.
Subscribe to ETPrime. Browse Companies:. Find this comment offensive? Spherical Spreading Propagation from a sound source array in the near field and far field Wave Front Propagation How does sound travel in shallow water?
How does sound travel in very shallow waters? Use of Sound How do marine animals use sound? Marine Mammal Communication Individual-specific Vocalizations Group-specific Vocalizations Vocalizations Associated with Reproduction Sounds Associated with Aggression Marine fish communication Marine invertebrate communication Marine mammals feeding Marine fish and invertebrates feeding Marine mammal navigation Sound Production How do marine mammals produce sounds?
How do fish produce sounds? How do marine invertebrates produce sounds? Sound Reception How do marine mammals hear? How do aquatic birds hear? How do fish hear? How do marine invertebrates detect sounds? How did odontocete hearing evolve? How is sound used to measure water depth? How is sound used to find objects on the ocean bottom? Fishing How is sound used to locate fish?
How is sound used to identify fish? Communications How is sound used to communicate underwater? How is sound used to transmit data underwater?
Research Ocean Physics How is sound used to measure temperature in the ocean? How is sound used to measure global climate change?
How is sound used to measure currents in the ocean? How is sound used to measure waves in the surf zone? How is sound used to measure the upper ocean? How is sound used to help make long-term measurements of the ocean? How is sound used to explore for oil and gas? How is sound used to measure, detect, and track oil? How is sound used to study undersea earthquakes? How is sound used to study underwater volcanoes? How is sound used to map the seafloor? How is sound used to research wind energy?
Investigate Marine Animals How is sound used to study marine mammal distribution? How is sound used to estimate marine mammal abundance? How is acoustics used to monitor Arctic marine mammals? How is sound used to protect marine mammals? How is sound used to study the distribution of marine fishes? How is sound used to measure plankton? How is active acoustics used in fisheries research and management? How is sound used to study coral reefs? How is sound used to identify ecological hotspots?
Sonar employment is a hunt. Underway, the sonar team is planning tactical positions, taking advantage of the environment and topography to catch their prey. The target knows they are being hunted. They are planning their own ambush and have a lot of the same tools we have.
This hunt is also addictive and keeps sonarmen coming back for more—studying the environment, looking for that acoustic advantage that may be the difference between success and being detected. There is no procedure or checklist to follow at this point.
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