O 12-class submarine

Class overview
HNLMS O 12
Name:	O 12
Builders:	Koninklijke Maatschappij De Schelde (3) Fijenoord (1)
Operators:	Royal Netherlands Navy
Preceded by:	O 9 class
Succeeded by:	O 16
Built:	1928–1932
Completed:	4
General characteristics
Type:	Submarine
Displacement:	610 tons surfaced 754 tons submerged
Length:	60.42 m (198 ft 3 in)
Beam:	6.83 m (22 ft 5 in)
Draught:	3.6 m (11 ft 10 in)
Propulsion:	2 × 900 bhp (671 kW) diesel engines 2 × 310 bhp (231 kW) electric motors
Speed:	16 kn (30 km/h; 18 mph) surfaced 8 kn (15 km/h; 9.2 mph) submerged
Range:	3,500 nmi (6,500 km; 4,000 mi) at 8 kn (15 km/h; 9.2 mph) or 10 kn (19 km/h; 12 mph) on the surface 26 nmi (48 km; 30 mi) at 8 kn (15 km/h; 9.2 mph) submerged
Complement:	29-31
Armament:	4 × 21 inch bow torpedo tubes 1 × 21 inch stern torpedo tube

The O 12 class was a class of four submarines, built for the Royal Netherlands Navy. The ships, with a diving depth of 60 metres (200 ft), were used for patrols in the Dutch home waters. The class comprised O 12, O 13, O 14 and O 15. O 12 entered German service in 1943 as U-D2.

Construction

The ships were built by two different shipyards. O 12, O 13 and O 14 were built by Koninklijke Maatschappij De Schelde in Vlissingen and O 15 in Rotterdam at Fijenoord shipyard.

Name	Laid down	Launched	Commissioned	Decommissioned
O 12	20 October 1928	8 November 1930	Dutch Navy: 20 July 1931 German Navy: 30 January 1943	6 July 1945 (scuttled)
O 13	1 December 1928	18 April 1931	1 October 1931	13 June 1940
O 14	29 December 1928	3 October 1931	4 March 1932	26 June 1943
O 15	3 March 1930	27 May 1931	28 July 1932	1 September 1945

External links

Description of class

O 12-class submarines

O 12 O 13 O 14 O 15

Preceded by: O 9 class Followed by: HNLMS O 16 List of submarines of the Netherlands

Dutch naval ship classes of World War II

Battlecruisers

Design 1047^X

Cruisers

Destroyers

Frigates

Johan Maurits van Nassau^B^S

Gunboats and sloops

Submarines

O-series	O 9 O 12 O 16^S O 19 O 21

K-series	K V K VIII K XI K XIV

Other	Dolfijn^B^S Zeehond^B^S Zwaardvisch^B

Mine warfare vessel

Minelayers	Hydra Douwe Aukes Prins van Oranje Willem van der Zaan^S

Minesweepers	M A Jan van Amstel ABC

B: ex-British
C: Completed after the war
S: Single ship of class
X: Cancelled

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