Unknown Wreck 116802

General Comments

CL579/61--OBSTR REPORTED 260DEG. 1100YDS FROM CUPOLA, TREASURE ì ISLAND, NM20/61 ISSUED. CL716/76--CAS; WK LOCATED BY ECHOSOUNDER AND WIRE SWEEP ì INVESTIGATION. ECHOSOUNDER LEAST DEPTH OF 68.5FT AND A ì LEADLINE/DIVER LEAST DEPTH OF 69.2FT BOTH REDUCED TO PREDICTED ì TIDES WERE OBTAINED. THE WK, BELIEVED TO BE A METAL BARGE WITH NO ì PROTRUDING MAST WAS POSITIONED IN LAT 37-48-59N, LONG ì 122-22-53W(NAD27). H9794/78--70FT WK LOCATED IN LAT 37-48-58N, LONG ì 122-22-53W(NAD27). EVALUATOR RECOMMENDS CHART PRESENT SURVEY DATA. CL82/92--USCG; "REMOVE THE WRECK CHARTED IN ANCHORAGE 7 IN POSITION ì LAT 37-49.1N, LONG 122-22.9W(NAD83). ON DECEMBER 8, 1991, DIVERS ì FROM US NAVY MOBILE DIVING SALVAGE UNIT ONE VERIFIED THE WRECK NO ì LONGER EXISTS WITHIN A 100 METER RADIUS OF THE CHARTED POSITION." ì CHARTING ACTION; REVISED TO ED. (ENTERED 11/92 RWD) H10456/93--WK (SUBM 23.0M(75FT) AT MLLW), 12M ES INVESTIGATION ON AN ì APPROX 30X75FT BARGE LIKE FEATURE, POSITION GIVEN IN LAT ì 37-48-58.13N, LONG 122/22/56.97W. ANOTHER WK LIKE FEATURE WITH A ì LEAST DEPTH OF 23.7M WAS LOCATED ABOUT 30M NORTH. (UPDATED 1/95 ì RWD) H10960/00--OPR-L304-KR-00: WRECK WAS FOUND AT POSITION 37 48 57.663 N, 122 22 56.707 W WITH A LEAST DEPTH OF 69.4 FEET. THIS POSITION IS 15 METERS SOUTHEAST OF THE REPORTED LOCATION IN THE AWOIS DATABASE. THE DEPTH IN THE DATABASE WAS REPORTED AS 69.2 FEET IN 1976 AND 75 FEET IN 1993. IT IS RECOMMENDED THAT THE DEPTH OF THE WRECK BE REVISED TO 69 FEET. A SECOND WRECK, WHICH WAS ORIGINALLY DISCOVERED IN 1993, WAS LOCATED APPROXIMATELY 10 METERS WEST OF THE AWOIS ITEM. THE WRECK WAS FOUND AT POSITION 37 48 57.543 N, 122 22 57.743 W WITH A LEAST DEPTH OF 81.5 FEET. IT IS RECOMMENDED THAT THE SECOND WRECK BE ADDED TO THE AWOIS DATABASE. FOLLOWING IS A HILL SHADED MODEL OF MULTIBEAM DATA FROM THIS SURVEY, ILLUSTRATING THE ORIENTATION. ENTERED 11/04 MCR H11639, OPR-L430-NRT6-09; Item investigated with MB object detection. Wreck has been verified. (Updated CEH 4/2011)