Platform Wreck 43999

Field Value
Wreck Location
Marine Coordinates (DMM) 		53 36.54 N,0 20.917 E
Latitude, Longitude
Decimal Degrees
  • Latitude: 53.609000
  • Longitude: 0.348617
Wreck Depth 14.7 m
Water Depth 16 m
Water Level Effect always under water/submerged
Vertical Datum Approximate Lowest Astronomical Tide
Type Platform
Sonar Length 13.7
Sonar Width 10
Shadow Height 0.8
Orientation 30
Conspic Visual not visually conspicuous
Conspic Radar not radar conspicuous
Original Detection Year 1940
Last Detection Year 2013
Original Source other
Surveying Details H0286/40 16.3.40 H0286/40 16.3.40 DW PA IN 533610N, 002105E. (ADMIRALTY) - NM 1649/40. H0273/41 27.1.41 H0273/41 27.1.41 NOW CHARTED AS NDW PA. (ADMIRALTY) - NM 179/41. H3146/61 12.12.61 H3146/61 12.12.61 NOW CHARTED AS DW PA. (AUTHORITY NOT STATED) NE 109. H6450/68 5.12.68 H6450/68 5.12.68 LOCATED ON 28.5.68, & SWEPT ON 30.5.68 IN 533633N, 002057E, USING DECCA. TWO BOAT SWEEP, CLEAR AT 29FT, FOUL AT 31FT. LEAST DEPTH OVER WK BY E/S 30FT [LAT] IN GEN DEPTH 50FT. SCOUR BY E/S 51FT. WK LOCATED BY HMS EGERIA, THOUGHT TO BE HMT BENVOLIO. A GOOD SONAR CONTACT FROM ALL DIRECTIONS. FLAT SEABED. SMALL OBSTN, DCS3 REVEALED TWO SMALL FIRM CONTACTS WITH SHADOW INDICATING WK. (HMS ENTERPRISE H525, 30.5.68, HI 39/68) - NM 2312/69. H4601/68 16.10.69 H4601/68 16.10.69 BTDB REQUEST HYDROGRAPHER THAT WK SHOULD BE BUOYED. (BTDB LTR LDC/DS CON M 181/64, 3.10.69) H4601/68 5.1.70 H4601/68 5.1.70 MOD(N) (HOME(N)) AGREE TO LAY G CAN LT BUOY, GPFL(2)G10S APPROX 315DEG 1C FROM WK. (HOME(N) LTR DTD 4.12.69) H4601/68 14.4.70 H4601/68 14.4.70 SW 5MS IN 533633N, 002109E, MARKED BY G CAN LT BUOY, GPFL(2)G.10S 1.3C W OF WK. (AGHM ROSYTH HN) - NM 685/70. H4601/68 12.6.70 H4601/68 12.6.70 POSN NOW 533631N, 002058E, WITH BUOY IN 533635N, 002051E. (TRINITY HOUSE) - NM 1033/70. H4601/68 9.10.70 H4601/68,N/HO/H/5543/69 9.10.70 WK SWEPT AND DIVED ON BY GARGAINEY & FOUND TO BE A CONCRETE BALLOON BARRAGE STRUCTURE & NOT HMT BENVOLIO. ATTEMPTS WERE MADE TO LIFT, BUT VESSEL NOT STRONG ENOUGH. WK WAS MOVED BUT REMAINED IN SAME POSN, WITH SAME DEPTH OVER IT [30FT 5IN]. DIAGRAMS OF STRUCTURE IN JACKET. RECOMMENDED TO BE DISPERSED WITH EXPLOSIVES OR LIFTED BY COASTAL CLASS SALVAGE VESSAL TO DEEP WATER. POSN FIXED BY DECCA, & COMPASS BEARING AND RADAR RANGE. WK BUOY 299.5DEG[T], 1000FT. (ASSISTANT MOORING & SALVAGE OFFICERS REPORT, ROSYTH, 11.9.70) H4601/68 5.3.71 H4601/68 N/HO/H/5543/69 5.3.71 TO BE DISPERSED BY EXPLOSIVES. (LTR TO FOSN1, 22.2.71) H4601/68 30.6.71 H4601/68 30.6.71 DIVING SURVEY REVEALED OB COMPLETELY DEMOLISHED. ESTIMATE HT OF RUBBLE ABOVE SEABEAD 3FT. (AUTHORITY NOT STATED) H4601/68 19.8.71 H4601/68 19.8.71 ISS TO EXAMINE. (HI SEP'71, FOSNIS 121046Z JUL, MOD 151005Z JUL) H4601/68 3.1.72 H4601/68 3.1.72 AREA 600MTRS SQUARE SEARCHED WITH MS47 TRANSIT SONAR. FEW SMALL CONTACTS FOUND. AREA SWEPT, CLEAR AT 9.2MTRS [30FT], FOUL AT 10.2MTRS [33.5FT]. POSN OF F INDICATES THAT ALTHOUGH THE CONCRETE STRUCTURE HAS BEEN SATISFACTORILY DEMOLISHED THERE MAY BE PORTIONS OF ANOTHER WK IN AREA. AREA TO BE SEARCHED BY HMS NURTON [MINEHUNTER] IN 1972. (SOISS R OF S, 23.11.71 & ENTERPRISE H525 NO 49/71) H4601/68 13.4.72 H4601/68 13.4.72 RE-INFORCED CONCRETE GIRDERS MAX HT 5FT FOUND IN THIS POSN, WK 4C TO SW EXAM'D, NOT BENVOLIO. (HMS NURTON 161245Z MAR) H4601/68 1.6.72 H4601/68 1.6.72 AREA 1000YDS AROUND POSN SEARCHED. SCATTERED REMAINS OF CONCRETE COVERED AREA OF 50 SQ YDS. NO SIGN OF BENVOLIO. LEAST DEPTH BY DIVER, SONAR & E/S 13.64MTRS [7FMS 3FT]. POSN 533635.14N, 002059.72E [EUR], 533631N, 002101E [OGB] USING HIFIX. (HMS NURTON, 24.4.72, & SOISS LTR DTD 8.8.72) H4601/68 13.10.72 H4601/68 13.10.72 WK BUOY REMOVED BY RMAS GARGANEY. (FOSN1 LTR DTD 9.10.72) H2395/73 9.1.74 H2395/73 9.1.74 CLOSE SDG & SWEPT BY MS47 DCS3. LEAST DEPTH 14.0MTRS IN 15.4MTRS. SCOUR 16.3MTRS [LAT]. FLAT SEABED. SMALL OBSTN. DCS3 REVEALED TWO SMALL FIRM CONTACTS WITH SHADOW INDICATING WK. POSN 533632N, 002100E USING HI-FIX. (HMS EGERIA H525 NO.128/73 K6826/2) 4.5.93 4.5.93 SHOWN AS WK 13.6MTRS ON ASSOCIATED BRITISH PORTS SURVEY HUMBER 3/3 [1991 EDN]. NCA. HH091/178/01 3.3.08 HH091/178/01 3.3.08 EXAM'D 13.9.07 IN 5636.540N, 0020.917E [WGD] USING DGPS. LEAST M/B DEPTH 15.01 IN GEN DEPTH 15.8MTRS. NO SCOUR. LENGTH 13.7MTRS, WIDTH 10MTRS, HT 0.78MTRS. LIES 030/210 DEGS. AN AREA OF DEBRIS IN THREE MAIN SECTIONS. (HMSML GLEANER, HI 1178). AMEND OBSTN 15MTRS IN REVISED POSN. BR STD. 4.9.13 4.9.13 EXAM'D 19.4.13 IN 5336.539N, 0020.915E [WGD]. LEAST M/B DEPTH 14.79 IN GEN DEPTH 15.5MTRS. LENGTH 13.0MTRS, WIDTH 9.5MTRS, HT 0.71MTR. DEBRIS AND RUBBLE. (NETSURVEY, HI 1401). AMEND OBSTN 14.7MTRS.
Last Amended Date Sep 4, 2013

General Comments

AREA OF SCATTERED RUBBLE

WRECK MAP LOADING ... 53 36.54 N,0 20.917 E
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