SM UC-21

SM UC-21 was a German Type UC II minelaying submarine or U-boat in the German Imperial Navy during World War I. The U-boat was ordered on 29 August 1915 and was launched on 1 April 1916. She was commissioned into the German Imperial Navy on 12 September 1916 as SM UC-21.

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Wikimedia, Wikidata
Type UC II submarine, U-boat, Blohm + Voss, Imperial German Navy, 

• Dreadnought Project page^@
• uboat.net page^@
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Location: KML, Cluster Map, Maps,

1914-07-28T00:00:00Z

1914-07-28T00:00:00Z

World War I

1916-04-01T00:00:00Z

1916-04-01T00:00:00Z

ship commissioning

1916-09-12T00:00:00Z

1916-09-12T00:00:00Z

ship commissioning

1916-04-01T00:00:00Z

1916-04-01T00:00:00Z

ship launching

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Frameless

March 18 1917 Imperial German Navy U-boat SM UC-21 IWM Q 58104 American tanker steamer Illinois

March 18 1917 Imperial German Navy U-boat SM UC-21 IWM Q 58104 American tanker steamer Illinois

Type	Subtype	Date	Description	Notes	Source
link	page		Dreadnought Project page@		Wikidata
link	page		uboat.net page@		Wikidata
commons	image		March 18 1917 Imperial German Navy U-boat SM UC-21 IWM Q 58104 American tanker steamer Illinois		Commons
commons	image		March 18 1917 Imperial German Navy U-boat SM UC-21 IWM Q 58104 American tanker steamer Illinois		Commons