Pipes Tubes Diffusers Wreck 4679

Field Value
Wreck Location
Marine Coordinates (DMM) 		50 34.081 N,2 28.778 W
Latitude, Longitude
Decimal Degrees
  • Latitude: 50.568017
  • Longitude: -2.479633
Wreck Depth 22.5 m
Water Depth 24 m
Water Level Effect always under water/submerged
Vertical Datum Approximate Lowest Astronomical Tide
Type Pipes/Tubes/Diffusers
Sonar Length 109
Sonar Width 14.3
Shadow Height 1.6
Orientation 46
Conspic Visual not visually conspicuous
Conspic Radar not radar conspicuous
Bottom Texture Sand
Original Detection Year 1982
Last Detection Year 2009
Original Source national HO/authority notice to mariners
Last Amended Date Dec 31, 2009

Simplified Wreck Survey

Underwater Obstruction Report: Weymouth and Portland Long Sea Outfall. Located off the coast of Dorset, England, this underwater structure is positioned at coordinates 50 34.081 N, 2 28.778 W. The obstruction was confirmed via DGPS survey in 2009. The structure measures 109.4 meters in length and 14.3 meters in width, with a height of 1.6 meters above the seabed. Survey data indicates a least multi-beam depth of 22.87 meters within an area of 24.0 meters general depth. The site exhibits a moderate magnetic anomaly and comprises three distinct detected objects oriented on a 046/226-degree axis. Historical records identify the site as part of the Weymouth and Portland sea outfall system, originally marked by diffusers and temporary navigational buoys. The obstruction remains on the seabed as a charted feature of interest for mariners navigating the English Channel waters near Portland.

Surveying Details

H1934/82 3.11.82 DIFFUSERS, EACH STANDING 1.35MTRS ABOVE SEABED, INSTALLED AT SEAWARD END OF WEYMOUTH & PORTLAND LONG SEA OUTFALL. POSNS- (A) 503401N,022843W, (B) 503359N, 022845W, & (C) 503358N, 022847W. TEMPORARY Y CON BUOY LAID APPROX 90MTRS SW. (PORTLAND LOCAL NM 20/82). CHART AS FOUL IN 503359N, 022845W. R/P. H1934/82 12.11.82 DIAGRAM OF SEWER & OUTFALLS RECEIVED. FOUL WILL BE DELETED BY NE 2615, 3315 IN HAND, WHEN SEWER WILL BE INSERTED. (J TAYLOR, 19.10.82). NE 2615. HH091/154/01 / SEP 2010/000005843 31.12.09 LOCATED 24.2.09 IN 5034.081N, 0228.778W [WGD] USING DGPS. LEAST M/B DEPTH 22.87 IN GEN DEPTH 24.0MTRS. NO SCOUR. LENGTH 109.4MTRS, WIDTH 14.3MTRS, HT 1.6MTRS. LIES 046/226 DEGS. MODERATE MAGNETIC ANOMALY. THREE OBJECTS DETECTED. (FUGRO OSAE, HI 1154). PLOTS ON CHARTED OUTFALL. NCA.

General Comments

LINEAR OUTFALL WITH THREE HIGH POINTS

WRECK MAP LOADING ... 50 34.081 N,2 28.778 W
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