HNLMS O 24

Survived

Type	Submarine
Class	O 21
War	Second World War
Main guns	4 × 21 in (533 mm) bow torpedo tubes

Launched in Rotterdam in March 1940 and sailed for Britain unfinished when the Germans invaded. Served in the Mediterranean and the Far East; her last wartime captain, Piet de Jong, later became Prime Minister of the Netherlands.

Hr.Ms. O 24 (1940-1954) vaart, onder commando van luitenant ter zee der 1e klasse P.J.S. de Jong, na een afwezigheid van zes jaar weer op de Nieuwe Maas ter hoogte van de Parkhaven. Photo: Centrum voor Audiovisuele Dienstverlening Koninklijke Marine (CAVDKM), CC BY-SA 4.0 · Wikimedia Commons

Armament and specifications

Armament

4 × 21 in (533 mm) bow torpedo tubes
2 × 21 in stern torpedo tubes
2 × 21 in (1×2) external-traversing TT amidships (removed post-war)
40 mm Vickers gun, replaced in early 1942 by 20 mm Oerlikon
British Mk IV and Mk VIII torpedoes
German G7a torpedoes

Builder	Rotterdamsche Droogdok Maatschappij, Rotterdam
Laid down	12 November 1937
Launched	18 March 1940
Commissioned	13 May 1940
Displacement	990 tons surfaced 1205 tons submerged
Length	77.7 m (254 ft 11 in)
Speed	19.5 kn (36.1 km/h; 22.4 mph) surfaced 9 kn (17 km/h; 10 mph) submerged
Complement	39

As built, from the ship's Wikipedia article. Figures there may cover later refits too.

Career

She isn't listed in any of the fleet actions covered here.

Launched

18 March 1940

Fate

Survived

Sold for scrapping, 1963