| 11. | During the Second World War he worked on operations research for submarine warfare.
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| 12. | This was the ship that launched the era of submarine warfare,
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| 13. | _Destroyers equipped with the system are capable of anti-air, anti-ship and anti-submarine warfare.
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| 14. | The Pentagon is already examining Taiwan's air defenses and its anti-submarine warfare strategies.
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| 15. | Ping sounds like the sonar in a submarine warfare movie, right?
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| 16. | Instead, the German Navy turned its efforts and resources to unrestricted submarine warfare.
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| 17. | She conducted anti-submarine warfare and amphibious support operations during the deployment.
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| 18. | After Fleet Sound School and trained sailors in anti-submarine warfare techniques.
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| 19. | Their ship is loaded with missiles, guns and anti-submarine warfare systems.
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| 20. | He further stated that such resistance was common in submarine warfare.
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