Simplified Wreck Survey
Underwater wreck details for Corton Ltv Possibly located off the coast of Lowestoft in the North Sea at coordinates 52 30844 N 1 50523 E. Originally sunk during World War One approximately 4 miles northeast by east from Lowestoft. Historical hydrographic surveys spanning from 1916 to 2017 record multiple attempts to locate the obstruction. While sonar and magnetic surveys in 1986 and 1992 detected a small buried vessel with a scour and magnetic anomaly, subsequent multibeam sonar surveys conducted between 2016 and 2017 failed to locate the wreck, leading to the status being amended to dead.
Surveying Details
22.6.16 SUNK 4M NE BY E FROM LOWESTOFT. (WW1SL). INS AS WK (OLD SYMBOL) IN 523130N, 015000E. - NM 665/16. 1923 AMENDED TO DW. BR STD. H2615/28 28.4.28 NOT FOUND. (TH LETTER 3552/23). DELETED. - NM ACTION. H4403/71 8.11.73 NOT FOUND. SEARCHED USING TRANSIT SONAR, WITHIN 2C OF REPD POSN. (SOISS). H4403/71 15.11.79 NOTHING FOUND. CLOSE E/S SEARCH BY SMB. (SOISS, HI 63B/79). H2339/85 18.6.86 LOCATED 11.4.86 IN 523049N, 015038E [OGB] USING TRISPONDER [3 LOP]. SMALL SCOUR, TOGETHER WITH MAGNETIC ANOMALY, INDICATES WK OF SMALL VESSEL COMPLETELY BURIED. NO INDICATION ON SONAR. SCOUR DEPTH 22.5 IN GEN DEPTH 22MTRS. CHART AS FOUL. (NP 1016, HI 306). NE 1536. H4022/86 15.6.87 NOT FOUND DURING DCS3 SEARCH. NO MAGNETIC ANOMALY DETECTED. RETAIN AS CHARTED. (NP 1016, HI 371). NCA. H6333/87 23.5.88 SMALL FIRM CONTACT OBTAINED AT 100MTRS RANGE ON DCS3. NO SHADOW OR MAG ANOMALY. GEN DEPTH 21MTRS. NOT FURTHER EXAM'D. RETAIN AS CHARTED. (NP 1016, HI 416). NCA. H3931/88 18.7.89 SMALL CONTACT FOUND DURING ROUTINE DCS3 AREA SEARCH. NOT FURTHER EXAM'D. (NP 1016, HI 453). NCA. HH090/488/01 11.7.90 NOT FOUND DURING AREA SEARCH USING SONAR AND MAGNETOMETER. (NP 1016, HI 488). NCA. HH090/513/01 14.6.91 NOT FOUND DURING ROUTINE DCS3 SEARCH. NCA YET. (NP 1016, HI 513). NCA. HH090/545/01 9.6.92 LOCATED 24.4.92 IN 523047.5N, 015035E [OGB] APPROX USING TRISPONDER [4 LOP]. POSN DERIVED FROM DCS3 TRACE. SMALL CONTACT, LYING N/S, GIVING STRONG SONAR RETURN BUT NO SHADOW. NOT FULLY SURVEYED. RETAIN AS CHARTED. (NP 1016, HI 545). NCA. HH090/570/01 28.7.93 LOCATED NEAR CHARTED POSN. RETAIN AS CHARTED. (NP 1016, HI 570). NCA. HH090/623/01 5.5.94 NOT LOCATED BY DCS3 OR MAGNETOMETER. RETAIN AS CHARTED. (NP 1016, HI 623). NCA. HH090/662/01 8.6.95 NOT LOCATED. RETAIN AS CHARTED. (NP 1016, HI 662). NCA. HH090/687/01 24.2.96 NOT LOCATED. RETAIN AS CHARTED. (NP 1016, HI 687). NCA. HH090/733/01 18.4.97 NOT LOCATED. (NP 1016, HI 733). NCA. 27.8.09 EUT POSN: 5230.844N, 0150.523E. NE 1543. SEP 2016/000091758 21.7.17 NOT LOCATED BY M/B SURVEY 2016-2017. (GARDLINE, HI 1494). AMEND DEAD.