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O20 (潜水艦)
Wikipedia definition
1. HNLMS O 20The O 20 was a Dutch O 19-class submarine in the Royal Netherlands Navy that saw service during World War II. O 20 along with her sister ship O 19 were the first boats in the world to be equipped with a "getrimd diesel systeem" or "snort system" that allowed the submarine to run its diesel engines while submerged. O 20 was laid down June 15, 1936 as the K XX. After which at some point she was renamed O 20.
Read “HNLMS O 20” on English Wikipedia
Read “O20 (潜水艦)” on Japanese Wikipedia
Read “HNLMS O 20” on DBpedia

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