Groeswen (Probably) Wreck

Field Value
Wreck Category dangerous wreck
Groeswen (probably) Wreck Location
Marine Coordinates (DMM) 		51 53.16 N,1 37.747 E
Latitude, Longitude
Decimal Degrees
  • Latitude: 51.886000
  • Longitude: 1.629117
Wreck Depth 14.2 m
Water Depth 22 m
Water Level Effect always under water/submerged
Vertical Datum Approximate Lowest Astronomical Tide
Name GROESWEN (PROBABLY)
Type steam ship
Flag GB
Length 103.9 m
Width 14.3 m
Draught 7.9
Sonar Length 107
Sonar Width 18
Shadow Height 7.8
Orientation 21
Tonnage 3570
Tonnage Type gross
Cargo coal
Conspic Visual not visually conspicuous
Conspic Radar not radar conspicuous
Date Sunk Nov 27, 1917
Bottom Texture 4,6
Original Detection Year 1917
Last Detection Year 2016
Original Source published World War 1 losses
Last Amended Date Jul 17, 2016

Simplified Wreck Survey

The shipwreck Groeswen (probably) is an underwater obstruction located off the southeast coast of England in the North Sea near the Thames Estuary and Sunk Lightvessel. Official UK Hydrographic Office survey records document the World War I era wreck, which sank after striking a mine or vessel, with its precise modern coordinates established at 51 53.16 N, 1 37.747 E. Comprehensive hydrographic surveys conducted by Royal Navy vessels and commercial surveyors including HMS Egeria, HMS Beagle, and MMT between 1974 and 2016 provide detailed structural descriptions of the submerged steel wreck. The large sunken vessel measures approximately 107 meters in length, 18 meters in width, and stands with a height of 7.8 meters above the seabed, lying on an orientation of 021/201 degrees. Over decades of marine deterioration, the wreck has transitioned into a severe state of collapse and is lying on its side with associated debris fields on the eastern side, a strong magnetic anomaly, and a least multibeam depth of 14.2 meters resting within a general surrounding seabed depth of 22 meters.

Surveying Details

SANK 3M NE HALF E FROM SUNK LTV. (WW1SL). H7366/17 WK [OLD SYMBOL] IN 515400N, 013830E APPROX. - FNM 78/18. 10.10.23 AMENDED TO DW. (AUTHORITY NOT STATED) BA 1406. H335/31 16.1.31 NOW CHARTED AS DW PA. (AUTHORITY NOT STATED) BE 1610. H7972/34 5.1.35 DELETE. (HMS KELLET) DELETE. - NM ACTION. H4358/74 2.10.74 WK LOCATED IN 515312N, 013750E. LEAST E/S DEPTH 15.3MTRS. (HMS EGERIA, SIGNAL DTD 2.10.74). NCA YET. H4358/74 15.10.74 EXAM'D IN 515312N, 013750E [OGB] USING HIFIX [2 LOP]. LEAST E/S DEPTH 15.3 [LAT]. (HMS EGERIA, HN DTD 4.10.74). - NM 2032/74. H4358/74 22.11.74 EXAM'D 11.7.74 IN 515312N, 013750E [EUR] USING HIFIX [2 LOP]. LEAST E/S DEPTH 15.3 IN GEN DEPTH 22.6MTRS. LENGTH 72MTRS. (HMS EGERIA, HI 19/74). AMEND POSN TO 515307N, 013751.5E [OGB]. BR STD. H4139/76 14.1.77 EXAM'D 6.8.76 IN 515309.6N, 013749.8E [OGB] USING HIFIX/6 [2 LOP]. SWEPT CLEAR AT 13, FOUL AT 13.5MTRS. LEAST E/S DEPTH 14.3 IN GEN DEPTH 21.7MTRS. SCOUR DEPTH 22.4MTRS. LARGE WK, 110 X 25MTRS. LYING NNE/SSW. SEEMS INTACT WITH NE END LEVEL WITH SEABED AND POSSIBLY BURIED. SLIGHT SCOUR AT SW END. (HMS BEAGLE, HI 31/76). BR STD. HH090/667/01 19.12.95 EXAM'D 30.7.95 IN 515309.76N, 013744.59E [WGD] USING DGPS. SWEPT CLEAR 14.2, FOUL 14.6MTRS. LEAST E/S DEPTH 15.1 IN GEN DEPTH 22.5MTRS. NO SCOUR. DCS3 HT 7.1MTRS. LENGTH 115MTRS, WIDTH 30MTRS. LIES 018/198 DEGS. STRONG MAGNETIC ANOMALY. SEMI BURIED AND DISINTEGRATING. BOWS APPEAR TO BE SEPARATED FROM THE MAIN BODY OF THE WK. (OCEONICS, HI 667). BR STD. SEP 2015/000083463 17.7.16 EXAM'D 19.4.16 IN 5153.160N, 0137.747E [WGD]. LEAST M/B DEPTH 14.2MTRS IN GEN DEPTH 22MTRS. LENGTH 107MTRS, WIDTH 18MTRS, HT 7.8MTRS, ORIENTATION 021/201. STRONG MAGNETIC ANOMALY. WK IS IN SEVERE STATE OF COLLAPSE, APPEARS TO BE LYING IN ITS SIDE DUE TO PRESENCE OF THE DEBRIS ON EASTERN SIDE OF WK. (MMT, HI 1474). AMEND TO DW 14.2MTRS IN REVISED POSN.

Circumstances of loss

BUILT IN 1900 BY J READHEAD & SONS, S SHIELDS. OWNED AT TIME OF LOSS BY W & C T JONES SS CO LTD. TWO BOILERS, TRIPLE EXPANSION ENGINE OF 293HP, SINGLE SHAFT. PASSAGE HULL FOR SPEZIA. CARGO COAL. STRUCK MINE LAID BY UC-11. (WW1SL & SIBI).

General Comments

Wk well collapsed

WRECK MAP LOADING ... 51 53.16 N,1 37.747 E
Groeswen (Probably) on Wreck Map Groeswen (Probably) Wreck on Google Map

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FAQ

Where is the GROESWEN (PROBABLY) wreck located?

The GROESWEN (PROBABLY) wreck is located at coordinates 51 53.16 N,1 37.747 E.

How deep is the GROESWEN (PROBABLY) and where exactly is it located?

The GROESWEN (PROBABLY) lies at a depth of about 14.2 meters and is located at coordinates 51 53.16 N,1 37.747 E.

How deep is the seabed around the GROESWEN (PROBABLY)?

The seabed around the GROESWEN (PROBABLY) lies at approximately 22 meters deep.

When did the GROESWEN (PROBABLY) sink?

The GROESWEN (PROBABLY) sank on Nov 27, 1917.

When was the wreck of the GROESWEN (PROBABLY) discovered?

The wreck of the GROESWEN (PROBABLY) was discovered in 1917.

What country did the GROESWEN (PROBABLY) belong to?

The GROESWEN (PROBABLY) belonged to GB.

What cargo was the GROESWEN (PROBABLY) carrying?

The GROESWEN (PROBABLY) was carrying coal.

What was the tonnage of the GROESWEN (PROBABLY)?

The GROESWEN (PROBABLY) had a tonnage of 3570 tons.

What type of wreck is the GROESWEN (PROBABLY)?

The GROESWEN (PROBABLY) is classified as a steam ship.

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