U 21 Wreck

Field Value
Wreck Category non-dangerous wreck
Status Dead = Not detected by numerous sources therefore considered not to exist
U 21 Wreck Location
Marine Coordinates (DMM) 		54 14.96 N,3 59.92 E
Latitude, Longitude
Decimal Degrees
  • Latitude: 54.249333
  • Longitude: 3.998667
Water Depth 45 m
Water Level Effect always under water/submerged
Vertical Datum Lowest Astronomical Tide
Name U 21
Type submarine
Flag DE
Length 64.3 m
Width 6.1 m
Tonnage 837
Tonnage Type displacement
Conspic Visual not visually conspicuous
Conspic Radar not radar conspicuous
Date Sunk Feb 22, 1919
Original Detection Year 1919
Last Detection Year 1988
Original Source national HO/authority notice to mariners
Last Amended Date Aug 1, 2014

Simplified Wreck Survey

The underwater wreck of the submarine U 21 is located at coordinates 54 14.96 N, 3 59.92 E. Historical hydrographic survey records document the position history of the U 21 wreck, which was initially reported as very approximate in 1919 before being updated through various international notices to mariners. The site has historically been classified as a non-dangerous wreck with positional amendments recorded by hydrographic offices across the region.

Surveying Details

H2766/19 3.4.19 SANK IN 541430N, 035800E. POSN VERY APPROX. (BERLIN NM 784/19). NO DANGER TO NAVIGATION. INS AS NDW ON 2181A. H3007/19 11.4.19 POSN NOW GIVEN AS 541500N, 040000E. (BERLIN NM 855/19). AMEND POSN. BR STD. H256/27 27.1.27 AMENDED TO NDW (WRECK) (1919). 7.2.69 AMEND TO NDW. NE 1405. 30.6.72 SHOWN IN 541500N, 040300E. (DANISH FISHERIES 5302 [1965] & 5402). 2.8.72 SHOWN IN 541455N 040320E. (DANISH FISHERIES 5304). 3.8.72 SHOWN IN 541510N, 040310. (DANISH FISHERIES 5404). 2.10.73 ACCEPTED FOR NL CHARTS FROM BA 2182B(M). (NL WK RECORDS). H3498/88 2.8.88 DELETE. (NETH NM 367/88). BR STD.

Circumstances of loss

FOUNDERED WHILST ON ROUTE TO SURRENDER TO BRITISH FLEET.

WRECK MAP LOADING ... 54 14.96 N,3 59.92 E
U 21 on Wreck Map U 21 Wreck on Google Map

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FAQ

Where is the U 21 wreck located?

The U 21 wreck is located at coordinates 54 14.96 N,3 59.92 E.

How deep is the seabed around the U 21?

The seabed around the U 21 lies at approximately 45 meters deep.

When did the U 21 sink?

The U 21 sank on Feb 22, 1919.

When was the wreck of the U 21 discovered?

The wreck of the U 21 was discovered in 1919.

What country did the U 21 belong to?

The U 21 belonged to DE.

What was the tonnage of the U 21?

The U 21 had a tonnage of 837 tons.

What type of wreck is the U 21?

The U 21 is classified as a submarine.

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