HNLMS O 4

History
Name	O 4
Ordered	18 December 1911
Builder	De Schelde
Laid down	15 June 1912
Launched	5 August 1913
Commissioned	17 June 1914
Decommissioned	1935
In service	1914–1935
General characteristics [1]
Class and type	O 2-class submarine
Type	Submarine
Displacement	134 tons - 149 tons
Length	32.13 m (105 ft 5 in)
Beam	3.3 m (10 ft 10 in)
Draught	2.73 m (8 ft 11 in)
Propulsion	1 × 280 bhp (209 kW) diesel engine 1 × 145 bhp (108 kW) electric motor
Speed	11 kn (20 km/h; 13 mph) surfaced 8 kn (15 km/h; 9.2 mph) submerged
Range	500 nmi (930 km; 580 mi) at 10 kn (19 km/h; 12 mph) on the surface 35 nmi (65 km; 40 mi) at 7 kn (13 km/h; 8.1 mph) submerged
Complement	10
Armament	2 × 18 inch bow torpedo tubes

O 4 was an O 2 class patrol submarine of the Royal Netherlands Navy. The ship was built by De Schelde shipyard in Flushing, Netherlands.

Service history

The submarine was ordered on 18 December 1911. On 15 June 1912 the O 4 was laid down in Flushing at the shipyard of De Schelde. The launch took place on 5 August 1913.[2]

A passive sonar and two retractable periscopes were installed on the ship making it the first submarine in the Dutch navy having this equipment.[2]

On 17 June 1914 the ship was commissioned in the navy. During World War I the ship was based in Flushing. Queen Wilhelmina visited the ship on 22 December 1914.[2]

In 1935 the O 4 was decommissioned.[2]

References

1. "Dutch Submarines: The O 2 submarine class". dutchsubmarines.com. 2012. Retrieved 19 July 2013.
2. "Dutch Submarines: The submarine O 4". dutchsubmarines.com. 2012. Retrieved 19 July 2013.

External links

• Description of ship