HNLMS O 23

Survived

Type	Submarine
Class	O 21
War	Second World War
Main guns	2 × 1.6″ guns

Escaped to Britain in May 1940 and made twenty patrols, in the North Sea, the Mediterranean and the Indian Ocean. Scrapped in 1949.

Collectie / Archief : Fotocollectie Anefo Reportage / Serie : [ onbekend ] Beschrijving : Onderzeeboot 023 Datum : 31 oktober 1947 Trefwoorden : onderzeeboten Fotograaf : Sagers, Harry / Anefo Auteursrechthebbende : Nationaal Archief Materiaalsoort : Glasnegatief Nummer archiefinventaris : bekijk to Photo: Nationaal Archief, CC0 · Wikimedia Commons

Armament and specifications

Armament

4 × 21 in (533 mm) bow torpedo tubes
2 × 21 in (533 mm) stern torpedo tubes
2 × 21 in (533 mm) external traversing torpedo tubes
2 × single 40 mm (1.6 in) AA guns

Builder	Rotterdamsche Droogdok Maatschappij, Rotterdam
Laid down	12 October 1937
Launched	5 December 1939
Commissioned	13 May 1940
Displacement	987 long tons (1,003 t) (surfaced) 1,488 long tons (1,512 t) (submerged)
Length	255 ft (77.7 m)
Speed	19.5 knots (36.1 km/h; 22.4 mph) (surfaced) 9 kn (17 km/h; 10 mph) (submerged)
Complement	60

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

5 December 1939

Fate

Survived

Sold for scrap, April 1949