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Message: <blockquote data-quote="Dilandu" data-source="post: 417283" data-attributes="member: 9998">The first two are Norwegian, the second are Germans. Third is a "Blocha" ("Flea") diving torpedo boat, designed in Leningrad in late 1930s. She was supposed to use both speed & stealth to attack enemy warships. The prototype was laid up in 1939, but were stopped when the war started. During the blockade, the incomplete boat was seriously damaged by German shell hit, so in 1945 it was deemed a total loss and scrapped.The fourth is the scheme of transporting the "Blocha" onboard the large warships to enemy harbors.</blockquote>

Verification: What year did the first man go to space? (answer has 4 numbers)