Unknown Wreck 114469

General Comments

MAR 9/30/82-R/H--UNIDENTIFIED WK LOCATED BY SSS AT POS.41-10-29.52N 72-25-34.4W PROTRUDING 8.0 FT OFF BOTTOM IN 136 FT OF WATER. NO DIVER INVESTIGATION. HYDROGRAPHER THINKS WK MAY BE BARATARIA, NO.01813 MAR--8/83, OPR-B660-RU/HE-83; NON DANG. WK CLEARED TO AN ED OF 79FT BASED ON PREDICTED TIDES, WAS LOCATED IN GENERAL DEPTHS OF 104FT, IN LAT. 41-10-29.52N, LONG.72-25-34.40W. FE241WD/82--OPR-B660-RU-82; WHILE INVESTIGATING ITEM 4 (AWOIS #1813) TWO SIGNIFICANT CONTACTS WERE FOUND ON THE SONARGRAMS; HYDROGRAPHER BELIEVES THESE CONTACTS ARE THE BARATARIA (1813) AND THE THAMES (1814) BUT WERE NOT DIVER INVESTIGATED TO VERIFY IDENTITY DUE TO THE DEPTHS OF WATER; EVALUATOR RECOMMENDED RETAINING ITEM 1813 AS CHARTED AND ADDING A N0NDANGEROUS WRECK IN LAT 41-10-29.52N, LONG 72-25-34.40W. (UPDATED MSM 11/89) FE257/83-84WD--OPR-B660-RU/HE-83-84; NON-DANG SUBM WK, WAS CLEARED TO 79FT IN ONE DIRECTION ONLY; EVALUATOR STATES THAT SINCE THIS WRECK LIES IN 131 FT. OF WATER AND EXTENDS APPROXIMATELY 8 FT. OFF THE BOTTOM (COMPUTED FROM SIDE SCAN SONARGRAMS) IT IS REASONABLE TO NOTE 79 FT. CLEARANCE DEPTH. (UPDATED 5/87 RWD) OPR-370-TJ-04--Chart AWOIS Item #2730 non-dangerous sunken wreck, least depth known 123 feet, and text "Wk" at the present survey position in Latitude 41°10'28.999"N, Longitude 072°25'31.652"W. Update AWOIS Item #2730 database position and depth (AWOIS database estimated depth was incorrect with a value of 79ft while raster chart 12354 (41st Ed., Apr./04) portrays the correct depth value of 123 feet.This feature is the least depth over a wreck that appears to be a submerged barge. The wreck was located with 100% MBES (EM 1002) and developed with 100% SSS (KLEIN 5500) and 100% MBES (RESON 8101). The wreck is 32.5 meters long and 5 meters wide. The feature is located within the 200-meter search radius for AWOIS 2730 (a charted 123-foot reported non-dangerous wreck) and the 2000-meter search raduis for AWOIS 1813 (a charted wreck believed to be the tug "Barataria"). The history for AWOIS 2730 indicates that a past hydrographer believed that AWOIS 2730 may have been the wreck represented by AWOIS 1813; however, the current hydrographer is unable to definitively substantiate this claim since (1) no diver investigation was done and (2) the current feature does not correspond to the description of the Barataria included in the proprietary section of AWOIS 1813 (which describes a wreck 20.9 by 5.5 meters). NOTE: From the AWOIS descriptions, it appears the past hydrographer based his claim on knowing about only two wrecks. The current survey data show a total of five wrecks within or very near the search radii of AWOIS 1813, two of which (addressed in other feature reports) do indeed correspond to the AWOIS description (RES 11/30/07). DESCRIPTION 206 LORAN C RATES: 9960-W 14863.9; 9960-Y 43965.9. (ENTERED MSM 3/89)