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Submarine S-22 (D-3) https://i.imgur.com/SjqCai2.png The D-1 (renamed S-11) was not modernized because of its poor qualities, but the D-2 and D-3, which were in better condition, were updated with American help, and employed from 1963 for instruction, being renamed S-21 and S-22. The S-22 was the f... |
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