| O 13|
1 October 1931
O 12-class submarine
18 April 1931
| 1 December 1928|
lost 25 June 1940
1 December 1928
| 610 tons surfaced
754 tons submerged|
Damen Schelde Naval Shipbuilding, Flushing
O 13 was an O 12-class submarine of the Royal Netherlands Navy that saw service during World War II. She was built by the Koninklijke Maatschappij De Schelde of Vlissingen. She was one of many Dutch ships doing convoy duty during the Spanish Civil War. At the time of the German invasion of the Netherlands, O 13 was on patrol off the Dutch coast and was attacked by German planes on multiple occasions. After fleeing to England, the sub was lost during a patrol on the North Sea.
HNLMS O 13 Wikipedia
O 13 ran into a fishing boat, HD 7, from Den Helder in the Schulpengat on 26 September 1933, sinking HD 7. With sister ship O 15, O 13 attended the Brussels International Exposition in 1935. Later that year O 13, with the Dutch vessels O 12, O 15, Hertog Hendrik, Van Ghent, Kortenaer and Z 5, sailed around the North Sea, stopping at Gothenburg and Oslo. In 1937 O 13 did convoy duty in the Strait of Gibraltar during the Spanish Civil War, along with Hertog Hendrik, Johan Maurits van Nassau, Nautilus, Java and O 15.
During the German attack on the Netherlands in 1940 O 13 patrolled along the Dutch coast and was attacked multiple times by German aircraft. On 10 May 1940, she sailed to England escorted by the minesweeper Jan van Gelder and arrived in Portsmouth the next day. During the evacuation of Dunkirk and Bordeaux O 13 was on patrol in the English Channel. After the Fall of France O 13 was transferred to the 9th Submarine Flotilla based in Dundee, Scotland, together with the other Dutch submarines O 20, O 21, O 23, and O 24. O 13 sailed on her first patrol from Dundee on 12 June 1940 and disappeared. The submarine was presumed lost on 22 June 1940.
Since there are no German records about O 13 having been sunk it is assumed that the submarine ran into a mine, a distinct possibility since O 13 was patrolling in an area known to have been mined, possibly the same minefield where the Polish submarine ORP Orzeł was lost. One other possibility is that O 13 was rammed by the Polish submarine ORP Wilk, which reported running into an unidentified submarine during the time span in which O 13 was lost, but that submarine had a deck gun mounted forward of the conning tower and O-13 did not.
In September 2009, Dundee International Submarine Memorial was dedicated to the memory of the 296 sailors and commandos who served on submarines operating from there and who did not return, among them the crews of O 13 and O 22. O 22 was located near Norway in 1993. O 13 is referred to as "still on patrol", as it is the last Dutch submarine still to be found, of the seven submarines the Royal Dutch Navy lost in World War II. In September 2012, the Royal Netherlands Navy announced they would renew the search with new, advanced equipment.