Ro-13-class submarine

sub-type of Japanese Kaichū submarine type. 
Kaichū II type submarine, Type K2

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Wikimedia, Wikidata
Imperial Japanese Navy, Japan, submarine class, 

• Google Knowledge entry^@
  

Imperial Japanese Navy – Kaichū-class submarine – 

Japanese submarine Ro-15

Type	Date	Description	Keywords	Notes	Source
link		Google Knowledge entry@			Wikidata
image	1921	Japanese submarine Ro-15			Wikimedia

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