Mersey Wreck

Surveying Details

SANK IN 511711N, 012805E. (VA DOVER). H0403/40 23.4.40 PFNM 1088/40 ISSUED. H0411/40 16.5.40 INS DW IN 511711N, 012805E. - FNM 1198/40. H0565/40 19.8.40 INS DW. - NM 2080/40. H0403/40 22.2.50 DISPERSED TO BELOW LEVEL OF ADJACENT SEA BED. (C-IN-C NORE, 22.2.50). H0403/40 21.6.50 WK IN 511712N, 012808E USING HSA. LUCAS WIRE DRIFT SWEEP SMLS 324 325 ON 20 & 21.4.50 & 28.4.50. CLEAR AT 28FT FOUL AT 29FT. GEN DEPTH 33-40FT. DEPTHS OF 27FT EXIST WITHIN 2C TO THE S. (SML 324, 6.5.50). AMENDED TO WK 4FMS 4FT - NM 1172/50. H0403/40 30.3.60 LUCAS WIRE DRIFT SWEEP 14.7.59 IN 511709N, 012806E USING HSA. CLEAR AT 29FT FOUL AT 30FT. LEAST E/S DEPTH 37FT IN GEN DEPTH 39FT. SCOUR 49FT. SEABED SAND & SHINGLE. (ECES, SWEEP REPORT, 23.2.60). AMENDED TO SW 4FMS 5FT IN 511709N, 012806E. LC 1828 & NC 1895. H8033/68 12.12.68 A VERY POOR SONAR CONTACT IN 511710N, 012806E USING HSA. LEAST E/S DEPTH 35FT IN GEN DEPTH 40FT. SCOUR DEPTH 45FT. (HMS ENTERPRISE, HI 9/68). CHART AS SW 4FMS 4FT IN 511710N, 012806E. NE 1828 [NEW DATUM]. H8033/68 6.1.69 TO REMAIN AS SW 4FMS 5FT ON BA 1895 [OLD DATUM]. (HMS ENTERPRISE, H525 DTD 3.10.68). H5498/69 14.11.69 WK LOCATED 7.8.69 IN 511713N, 012806E USING HSA & DECCA. TWO BOAT DRIFT SWEEP 6.9.69, CLEAR AT 9.1MTRS FOUL AT 9.6MTRS. LEAST E/S DEPTH 10.5MTRS IN GEN DEPTH 11.5MTRS. SCOUR DEPTH 14.0MTRS. SEA BED IS SMOOTH. GOOD SONAR FROM E & W. LIES IN ITS OWN SCOUR. (HMS ENTERPRISE, HI 163/69, HI 8(B)/69). AMENDED TO SW 9.1MTRS [5FMS] IN 511713N, 012806E. - NM 1837/69. H2100/74 30.1.74 WK IN 511710N, 012807E USING HIFIX. CLOSE SOUNDED. LEAST E/S DEPTH 10.9MTRS IN GEN DEPTH 12.0MTRS. SCOUR DEPTH 13.6MTRS [LAT]. FLAT SEABED. SMALL WRECK SITTING IN OWN SCOUR. LIES APPROX E/W. (HMS ECHO, H525 NO.19/73). H1938/78 24.3.81 EXAM'D 20.10.80 IN 511710N, 012809E USING HIFIX [2 LOP]. SCATTERED WRECKAGE COVERING AREA 65 X 65MTRS. SWEPT CLEAR AT 9.5, FOUL AT 9.8MTRS. LEAST E/S DEPTH 10.1 IN GEN DEPTH 12MTRS. NO SCOUR. WK ALMOST COVERED. CHART AS FOUL. (HMS ENTERPRISE, HI 61A/80). AMEND TO SW 9.5MTRS IN 511710N, 012809E. BR SD. H1951/80 29.5.81 H1951/80 29.5.81 EXAM'D 8.4.81. WRECKAGE COVERING AREA 50 X 40MTRS. LEAST E/S DEPTH 10.1MTRS. RETAIN 1980 SWEPT DEPTH. (HMS ENTERPRISE, HI 21A). H2331/85 12.11.86 EXAM'D 27.6.86 & 6.7.86 IN 511710N, 012809E USING TRISPONDER. LIES IN ITS OWN SCOUR 13MTRS DEEP COVERING AN AREA 40 X 30MTRS APPROX. LEAST E/S DEPTH 10.5 IN GEN DEPTH 11.5-12.2MTRS. RETAIN SWEPT DEPTH. (NP 1016, HI 298). NCA. HH090/629/01 6.7.94 EXAM'D 16.6.94 IN 511711N, 012809E USING TRISPONDER [4 LOP]. LEAST E/S DEPTH 11.3 IN GEN DEPTH 12.3MTRS. SCOUR DEPTH 13.3MTRS. NO DCS3 HT. COVERS 45 BY 35MTRS. MODERATE MAGNETOMETER DEFLECTION. (NP 1016, HI 629). NCA. HH242/400/14 24.8.04 LEAST E/S DEPTH 11.3MTRS. (TH SURVEY DTD 29/30.5.04). AMEND WK 11.3MTRS. BR STD. SEP 2010/000174707 20.10.10 LEAST M/B DEPTH 10.9MTRS. (TH SURVEY DTD AUG 2010). NCA. SEP 2011/000169714 12.10.11 LOCATED IN 5117.212N, 0128.038E [WGD]. LEAST M/B DEPTH 10.9MTRS. (TH SURVEY DTD JULY 2011). BR STD. SEP 2019/000022679 27.6.19 EXAM'D 5.5.19; IN 5117.216N, 0128.042E [WGD]. LEAST M/B DEPTH 10.584MTRS IN GEN DEPTH 12.15MTRS, LENGTH 29.78MTRS, WIDTH 30.99MTRS, HT 1.06MTRS, ORIENTATION 049 DEGS. SCOUR LENGTH 10.71MTRS, WIDTH 8.71MTRS, 13.86MTRS DEEP, TOWARDS 096 DEGS. HEAVILY DEGRADED/BROKEN UP WRECK. DEBRIS FIELD; LENGTH 47.9MTRS, TOWARDS 093 DEGS. (CLINTON MARINE SURVEY AB, HI1585). AMEND DW 10.5MTRS IN REVISED POSN.