This is the information page about the shipwreck Ub 21, the water chart below shows the wreck in its immediate vicinity. The position of this wreck is 50 44.285 N,1 1.595 W (50.738083, -1.026583)

The texts accompanying this shipwreck are in English 🇬🇧, as they are prepared by the UK Hydrographic Office (UKHO) based on data from UKHO and the hydrographic services of the Netherlands, Belgium and Germany, among others. They include the known details of the wreck and the comments of the cartographers who have checked the position and condition of the wreck over time.

Name: UB 21

Length 36 meter, width: 4.3 meter, tonnage 292 ton

Cause: coastal class sub, built 1916, sank en-route to breakers.

Year of registration: 1921

Water depth above wreck: 5 meter, Height above seabed: 85 cm

Known since: 1921, last detected: 2013

Details measurements/cartography: H6429/21 15.10.21 H6429/21 15.10.21 WK DEMOLISHED. SWEEP CARRIED OUT TO DEPTH OF 8-10FT AT LW. NO OBSTN FOUND. (C-IN-C PORTSMOUTH, 27.9.21). NCA. H6429/21 9.12.21 H6429/21 9.12.21 WK IN 504415N, 010131W. LEAST DEPTH OVER 11FT. (CDR MAY, SURVEY NOV '21). CHART AS WK 1.75FMS.

- NM 22/22. H1181/51 12.3.51 H1181/51 12.3.51 DRIFT SWEPT IN 504414N, 010132W, OR 113DEGS, 18.7C FROM HORSE SAND FORT LT. CLEAR AT 13FT, FOUL AT 14FT IN GEN DEPTH 18FT. 75FT LONG, LYING 030/210DEGS. (SCES, 17.5.50). AMENDED TO WK 2FMS 1FT IN REVISED POSN. NOTE. H1179/51 9.8.51 H1179/51 9.8.51 FURTHER SURVEY DATA. (SCES, 5.2.51). NCA. H3359/59 6.7.60 H3359/59 6.7.60 FOULED DURING SWEEP FOR UNDINE. EXAM'D BY DIVERS. LEAST DEPTH CONFIRMED AS 13FT IN GEN DEPTH 15FT. (SCES, 1959). NCA. H4661/68 6.6.68 H4661/68 6.6.68 NOT LOCATED OR SEARCHED FOR. (FSL WATERWITCH, SCES, 22.1.68). NCA. H3409/70 24.7.70 H3409/70 24.7.70 WK DIVED ON 19.7.70. LOCATED AS CHARTED. VERY BROKEN UP WITH WRECKAGE SPREAD OVER AN AREA 100FT WIDE & STANDING ABOUT 6FT ABOVE SEABED IN SEVERAL PLACES. (J BEVAN, 21.7.70). NCA. H6872/68 2.9.70 H6872/68 2.9.70 LATEST SURVEY DETAILS TO NAVAL LAW & DGDC IN REPLY TO REQUEST DTD 24.8.70.17.12.70 SOLD TO R J TODD, BUCKLAND, PORTSMOUTH. (DC22(1)54707/70 DGDC). NCA. 15.6.71 15.6.71 NOW CHARTED AS WK 3.3MTRS. NC 2050. H2377/75 10.4.75 H2377/75 10.4.75 CHARTED POSN COVERED BY LINE OF SOUNDINGS. ONLY INDICATION A SHALLOW DIP IN SEABED. NO FURTHER ACTION TAKEN. (SCES, 1974). H4824/75 7.2.78 H4824/75 7.2.78 LOCATED 8.9.77 IN 504414.6N, 010131.7W [OGB] USING HSA. SONAR CONFIRM EXTENT OF WK AS REPORTED BY MR BEVAN. LEAST E/S DEPTH 4.3 IN GEN DEPTH 5.2MTRS. SCOUR DEPTH 5.8MTRS. (SCES, H270 AMENDMENT). AMEND TO WK 4.3MTRS IN REVISED POSN. R/S. H1720/65 12.9.78 H1720/65 12.9.78 WELL DISPERSED, SILTED UP & MOSTLY FLAT ON THE SEABED. HIGHEST PARTS STAND 6FT - ISOLATED PIECES OF TWISTED PLATING. DIFFICULT TO LOCATE WITH E/S. (M WALSH, 20.8.78). NCA. H2071/82 13.3.86 H2071/82 13.3.86 EXAM'D 28.10.85 IN 504415.3N, 010131.5W [OGB] USING TRISPONDER [3 LOP]. LEAST E/S DEPTH 4.4MTRS IN GEN DEPTH 5MTRS. SCOUR DEPTH 5.8MTRS. WELL DISPERSED AND NOT GENERALLY PROTRUDING ABOVE SEABED. APPARENTLY LYING E/W. (HMSML GLEANER, HI 142). AMEND TO WK 4.4MTRS IN REVISED POSN. BR STD. H3847/86 4.1.90 H3847/86 4.1.90 EXAM'D 16.6.89 IN 504414.8N, 010130.5W [OGB] USING TRISPONDER. LEAST E/S DEPTH 4.4 IN GEN DEPTH 5MTRS. SCOUR 0.5MTR DEEP. DCS3 HT 0.6MTR. LIES 035/315DEGS WITH VERY LITTLE STANDING PROUD OF SEABED. (HMSML GLEANER, HI 366). AMEND POSN. BR STD. 16.10.13 16.10.13 EXAM'D 3.7.13 IN 5044.285N, 0101.595W [WGD]. LEAST M/B DEPTH 4.4 IN GEN DEPTH 6MTRS. NO SCOUR. LENGTH 28.1MTRS, WIDTH 6.7MTRS, HT 1.6MTRS. LIES 085/265 DEGS. MODERATE MAGNETIC ANOMALY. VERY BROKEN UP, PARTS OF WK DISPERSED AROUND SITE. (NETSURVEY, HI 1437). RETAIN WK 4.4MTRS IN REVISED POSN.
Comment researcher: UK Hydrographic Office

Commentaar onderzoeker: WELL BROKEN UP

Position: 50 44.285 N,1 1.595 W

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