| History | |
|---|---|
 Netherlands | |
| Name | O 7 |
| Builder | Maatschappij Fijenoord, Rotterdam |
| Laid down | 12 May 1914 |
| Launched | 22 July 1916 |
| Commissioned | 23 December 1916 |
| Decommissioned | 21 December 1939 |
| Fate | Scrapped |
| General characteristics[1] | |
| Class & type | Unique submarine |
| Displacement |
|
| Length | 34.24 m (112 ft 4 in) |
| Beam | 3.9 m (12 ft 10 in) |
| Draught | 2.88 m (9 ft 5 in) |
| Propulsion |
|
| Speed |
|
| Range | |
| Complement | 15[2] |
| Armament |
|
HNLMS O 7 was a unique patrolsubmarine of theRoyal Netherlands Navy for use in the home waters of Europe. The ship was built by theMaatschappij Fijenoord shipyard inRotterdam. The submarines diving depth was 40 metres.O 6 was very similar to theO 7 and they are sometimes regarded as one class.[3]
The submarine was ordered on 8 May 1913. On 12 May 1914 theO 7 was laid down in Rotterdam at the shipyard ofMaatschappij Fijenoord. TheO 7's launching took place on 22 July 1916 and on 23 December 1916 the ship was commissioned into the Royal Netherlands Navy.[3]
On the 18 May 1927 theO 7 andSwedish steamerScania collided off the coast ofTexel.[3]
From 1935 onwards the ship was used only as a training vessel until 21 December 1939, when theO 7 was decommissioned.[3]
In 1940 when the Germans invaded the Netherlands, theO 7 was captured intact at her moorings. It was considered by the Germans to be far too obsolete for it to be of any use in the war effort and thus the boat went mostly ignored.TheO 7 sank on 2 May 1944 inDen Helder while it was moored there, she sank because of water leaking into the ship due to negligence. After the war she was raised and finally scrapped.[3]