The Soviet Navy's Project 611 were one of the first Soviet post-Second-World-War attack submarines. They were similarly capable to the American GUPPY fleet-boat conversions. They were a contemporary of the Whiskey-class submarines and shared a similar sonar arrangement. Like most conventional submarines designed 1946–1960, their design was influenced by the German World War II Type XXI submarine.
Key Facts
| Subject | Zulu-class submarine |
| Category | Soviet diesel-electric submarine class |
| Reading time | 1 min · Intermediate |
| Key date | 611 |
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