German submarine U-D3

U-D3 was a O 21-class submarine. The boat was laid down as the Dutch submarine K XXV and renamed O 25 but was captured during the German invasion of the Netherlands in World War II and commissioned in the Kriegsmarine.

Ship history
The submarine was ordered on 28 June 1938 and laid down on 10 April 1939 as K XXV at the Wilton-Fijenoord, Rotterdam. During construction she was renamed O 25, and was finally launched on 1 May 1940. Following the German invasion of 10 May 1940, the O 25 scuttled in the Nieuwe Waterweg near Rotterdam because there was no tugboat available to tow her to the United Kingdom.

The boat is raised by the Germans and it is was decided to repair and complete her. She served in the Kriegsmarine as the U-D3 and was commissioned on 8 June 1941.

From June to July 1941 U-D3 served as trial boat in Kiel when attached to the 3rd Flotilla. In June she was transferred to the 5th Flotilla also in Kiel were she was used as a school boat. She remained there until August that year. From August 1941 until September 1942 the boat is stationed at Lorient in occupied France and attached to the 2nd Flotilla. In October 1942 she is transferred to 10th Flotilla also in Lorient were she served until February 1943.

When patrolling off the west coast of Africa U-D3 spots and sinks the 5041BRT Norwegian freighter Indra on 26 November 1942.

In March 1943 the boat is transferred to Bergen in occupied Norway and attached to the U-boot Abwehr Schule to be used as school boat until October 1944. 13 October 1944 U-D3 was decommissioned after being damaged in an air raid on Kiel. On 3 May 1945 the boat was scuttled.