HNLMS O 20

O 20, laid down as K XX, was a O 19-class submarine of 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 submarine snorkel that allowed the submarine to run its diesel engines while submerged.

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Wikidata
O 20
O 19-class submarine, minelaying submarine, Wilton-Fijenoord, Royal Netherlands Navy, Netherlands, 

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Location: KML, Cluster Map, Maps,

1939-09-01T00:00:00Z

1939-09-01T00:00:00Z

World War II

1939-01-31T00:00:00Z

1939-01-31T00:00:00Z

ship launching

1936-06-15T00:00:00Z

1936-06-15T00:00:00Z

keel laying

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Frameless

Type	Subtype	Date	Description	Notes	Source