Other Wreck 5877

Field Value
Wreck Category dangerous wreck
Wreck Location
Marine Coordinates (DMM) 		51 37.156 N,1 23.438 E
Latitude, Longitude
Decimal Degrees
  • Latitude: 51.619267
  • Longitude: 1.390633
Wreck Depth 0.5 m
Water Depth 2 m
Water Level Effect always under water/submerged
Vertical Datum Approximate Lowest Astronomical Tide
Sonar Length 65
Sonar Width 20
Shadow Height 1.5
Orientation 60
Conspic Visual not visually conspicuous
Conspic Radar not radar conspicuous
Bottom Texture Sand
Scour Dimensions ,,000.5,060
Original Detection Year 1967
Last Detection Year 2005
Original Source naval vessel
Last Amended Date Oct 21, 2005

Simplified Wreck Survey

Underwater Wreck Survey Details at Coordinates 51 37.156 N, 1 23.438 E off the coast of England in the Thames Estuary region. This historic shipwreck site has been surveyed multiple times by the Royal Navy including HMS Enterprise, HMS Echo, HMS Egeria, and modern hydrographic surveys using DGPS. The underwater obstruction lies on a flat seabed with sandwaves and features a strong magnetic anomaly. Structural descriptions from hydrographic surveys indicate the wreck is broken into three distinct pieces spread across 65 meters with a length of 65 meters, width of 20 meters, and a height of 1.5 meters, sitting in its own scour. The least measured multibeam depth is 0.49 meters in a general depth of 2.5 meters.

Surveying Details

H2847/67 19.10.67 WK LOCATED IN 513709N [OGB] USING HIFIX [2 LOP]. LEAST E/S DEPTH 9 IN GEN DEPTH 11FT. SCOUR DEPTH 21FT. GOOD SONAR RESPONSE FROM N. (HMS ENTERPRISE, ROS 28.6.67). INS WK 1FM 3FT. BR STD. 9.5.68 AMEND TO WK 1FM 4FT [LAT]. LC 1610. 23.1.73 AMEND TO WK 2.7MTRS. NC 1975. H3921/73 22.1.74 EXAM'D IN 513708N, 012334E [OGB] USING HIFIX [2 LOP]. LEAST E/S DEPTH 1.6 IN GEN DEPTH 4MTRS. SCOUR DEPTH 8.3MTRS. ABOUT 40MTRS LONG, LYING NE/SW ON FLAT SEABED WITH SMALL SANDWAVES. SCOUR TO NE. (HMS ECHO). BR STD. H4823/75 26.7.76 LOCATED 29.3.76. NOT EXAM'D. (HMS EGERIA, HI 38/76). HH090/549/01 11.9.92 EXAM'D 4.8.92 IN 513707.7N, 012333.3E [OGB] USING TRISPONDER. LEAST E/S DEPTH 1.2 IN GEN DEPTH 1.6MTRS. SCOUR DEPTH 2.0MTRS. SMALL SONAR CONTACT GIVING NO SHADOW BUT A LARGE MAGNETOMETER DEFLECTION. ONLY JUST PROUD OF SEABED IN ITS OWN SCOUR. (NP 1016, HI 549). BR STD. HH090/690/01 23.7.96 LOCATED, NOT EXAMINED. (NP 1016, HI 690). HH091/119/01 21.10.05 EXAM'D 23.6.05 IN 5137.156N, 0123.438E [WGD] USING DGPS. LEAST M/B DEPTH 0.49 IN GEN DEPTH 2.5MTRS. SCOUR 0.5MTR DEEP EXTENDS LENGTH OF WK. LENGTH 65MTRS, WIDTH 20MTRS, HT 1.5MTRS. LIES 060/240 DEGS. STRONG MAGNETIC ANOMALY. WK BROKEN INTO THREE DISTINCT PIECES SPREAD ACROSS 65MTRS. APPEARS TO BE LYING IN ITS OWN SCOUR. (NP 1016, HI 1119). COULD BE BURIED WITH FRAGMENTS SHOWING. AMEND WK 0.5MTR. BR STD.

General Comments

WK BROKEN INTO THREE SMALL CONTACTS, IN OWN SCOUR

WRECK MAP LOADING ... 51 37.156 N,1 23.438 E
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