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...

commissioned in the Dutch navy on 3 July 1939. After her commissioning the HNLMS O 19 was put into service by commander Lieutenant-on-sea 1 (LTZ 1) K. van...

was laid down on 20 November 1937 as K XXI at the Koninklijke Maatschappij De Schelde, Vlissingen During construction she was renamed O 21, and was finally...

scuttled again. In 1935, O 12, with HNLMS O 13, HNLMS O 15, HNLMS Hertog Hendrik, HNLMS Van Ghent, HNLMS Kortenaer and HNLMS Z 5, sailed around the North...

O 24, laid down K XXIV was an O 21-class submarine of the Royal Netherlands Navy that saw service during World War II. The most famous occupant of O-24...

HNLMS O 16 was a submarine of the Royal Netherlands Navy that saw service during World War II. She was the first submarine of the RNN manufactured from...

Barracuda, HNLMS O 16, U-127 16 Dec: U-557 17 Dec: Corregidor, Ro-66, Shinonome, U-131 18 Dec: U-434 19 Dec: HMS Neptune, HNLMS O 20, HMS Stanley, U-574 20 Dec:...

commissioned into the Royal Navy on 12 February 1934 with the pennant number 20. During World War II, Neptune operated with a crew drawn predominantly from...

to enter Chesapeake Bay to test her main and secondary gun batteries on 19–20 December. The turbine could not be repaired inside the ship, so the yard workers...

have restored a considerable amount of buoyancy to the hull, raising her 20 in (510 mm) at the cost of an additional 2,000 long tons (2,032 t) displacement...