This is the information page about the shipwreck Alster (possibly), the water chart below shows the wreck in its immediate vicinity. The position of this wreck is 50 13.84 N,5 29.674 W (50.230667, -5.494567)

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: ALSTER (POSSIBLY)

Length 61 meter, width: 8.7 meter, draught: 4.9, tonnage 709 ton
Load: coal

Cause: built in 1867 in newcastle-upon-tyne. two boilers, compound expansion engine of 80 nhp, single shaft. owned at time of loss by j powey, cardiff. passage swansea for st nazaire. struck the three stone oar rocks in thickening mist, was holed and later sank approx 1.5m from st ives head. (sibi).

Year of registration: 1885

Water depth above wreck: 25 meter, Height above seabed: 140 cm

Known since: 1885, last detected: 2010

Details measurements/cartography: H2959/73 11.7.73 POSSIBLY ALSTER OR PRIMO [SEE WK RECORDS 16419 & 57370] IN 501348N, 052936W USING DECCA. ALSTER, 528 TON COLLIER, SUNK 17.12.1885, STRUCK THE WRA OFF PENDEEN ON PASSAGE SWANSEA TO ST.NAZAIRE, RAN BACK TO ST.IVES AND SUNK OFF ST. IVES HEAD. LAND EFFECT POSSIBLY FROM MAGNETOMETER READINGS, SHIP OF ABOUT 600-1000TONS. (E GILES, 21.6.73). NCA. H2959/73 19.7.73 WK LOCATED IN 501348N, 052936W USING DECCA. MOST LIKELY TO BE PRIMO BECAUSE OF SIZE AND AGE. DEPTHS OF SEABED VARIES FROM 80FT SOME 400 YARDS SOUTH OF WRECK TO 95FT SOME 900 YARDS NORTH OF WRECK. SEABED GENERALLY FLAT, SMALL PATCHES OF SAND AND GRAVEL, AND FLAT ROCK. HULL BROKEN INTO SEVERAL SECTIONS. LIES ROUGHLY N/S WITH BOWS NORTH, REDUCED BY BLASTING, HARDENED INTO SEABED. BOWS STAND ABOUT 8FT HIGH WITH ANCHOR AND HAWSE PIPE. REST OF WRECK 4-5FT HIGH. SPARE CAST IRON PROPELLER. MANY CONGER EELS. DEPTH CONSIDERED 15MTRS. (E GILES, 12.7.73). INS AS WK 15MTRS (8FMS 1FT). BR STD. H2959/73 24.10.73 NOW CONSIDERED TO BE ALSTER WITH PRIMO IN 501718N, 052748W. (E GILES). NCA. H3403/79 21.5.79 EXAM'D 30/31.10.78 IN 501348N, 052936W [OGB] USING TRISPONDER [2 LOP]. LEAST E/S DEPTH 23.7 IN GEN DEPTH 25.5MTRS. NO SCOUR. DCS3 HT 3.5MTRS. BROKEN INTO MANY PIECES, ONLY ONE GIVING LONG SHADOW. REMAINDER STANDS LESS THAN 2MTRS HIGH. (HMS HECATE, HI 13/78). AMEND TO WK 22MTRS. BR STD. HH100/351/16 28.12.00 DIVED IN 5013.834N, 0529.700W [WGD] USING GPS. STANDS 3MTRS HIGH BY DEPTH GAUGE. A LARGE AMOUNT OF SCATTERED & FLATTENED WRECKAGE. NO SIGN OF BOILERS OR ENGINE. BOWS FAIRLY INTACT BUT BROKEN OFF MAIN AREA OF LOWER HULL PLATES AND LIE 10-15MTRS N OF MAIN WRECKAGE. METAL VERY OLD AND ROTTEN. (G LOCKETT, 18.12.00). AMEND POSN. BR STD. HH100/351/18 29.7.02 LOCATED IN 5013.806N, 0529.568W [WGD] USING DGPS. NOT DIVED, SONAR INDICATES THAT WK HEAVILY BROKEN IN SEVERAL SECTIONS. HEIGHT 2.5MTRS MAXIMUM. GIVES STRONG MAGNETIC ANOMALY. (J ROSEVEARE/G FURSE, TELECON 29.7.02) BR STD. HH100/351/18 20.8.02 DIVED 14.8.02, BOW IN 5013.806N, 0529.568 [WGD] USING DGPS, STERN IN 5013.825N, 0529.640W. ORIENTATION 292DEGS. SONAR LENGTH 93MTRS. BOW IS HIGHEST PART STANDING 3-4MTRS HIGH, REDUCES TO 1MTR HIGH MIDSHIPS, THEN A 8MTR GAP TO STERN. (J ROSEVEARE/G FURSE TELECON 14.8.02) NFA. 15.12.11 LOCATED 21.3.10 IN 5013.840N, 0529.674W [WGD]. LEAST M/B DEPTH 23.81 IN GEN DEPTH 25.25MTRS. NO SCOUR. LENGTH 8.3MTRS, WIDTH 6.0MTRS, HT 1.44MTRS. LIES 140/320 DEGS. NEAR TO LEAST DEPTH POSN THERE ARE TWO SEPARATE 'U' SHAPED STRUCTURES. (FUGRO OSAE, HI 1157). QUOTED DIMENSIONS APPARENTLY FOR SHOALEST PORTION. AMEND WK 23.5MTRS IN REVISED POSN. BR STD.
Comment researcher: UK Hydrographic Office

Commentaar onderzoeker: AREA OF WELL SCATTERED & FLATTENED WKGE, BOWS N

Position: 50 13.84 N,5 29.674 W

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