Dutch submarine K XV in de haven van Soerabaja cicra 1939 NIMH 2158_008951
Dutch submarine K XV in Soerabaja circa 1939. Note the sealed hatch for her 40mm Vickers machine gun in the sail. Also, it seems like one of her sisterships is tied next to her with a floatplane stored on her bow similar to the top 1935 image. NIMH 2158_008951