u12 - AWOIS 7509

FE312SS/88 -- OPR-C121-WH-88; WHILE SEARCHING FOR AWOIS ITEM 1634, TWO SIDE-SCAN SONAR CONTACTS WERE LOCATED AND IDENTIFIED AS WRECKAGE (ALSO REFERENCE ITEM 7508); AN OBSTRUCTION (SSS CONTACT NO. 379.6S) WAS FOUND; DIVER LEAST DEPTH OF 36 FT. IN PRESENT SURVEY DEPTHS OF 38 FT.; REMAINS OF A PORTION OF A KEEL OF A METAL HULLED VESSEL; VESSEL WAS LYING INVERTED WITH THE KEEL EXPOSED; PORTION OF MIDSECTION OF VESSEL WAS VISIBLE; ENTIRE STRUCTURE WAS COATED WITH ANTI-FOULING PAINT; 45 FT. WIDE AT THE BEAM, 37 FT. AT THE NORTHERN END AND 18 FT. LONG; SOUTHERN END OF SITE WAS BENT AND TWISTED; HULL STOOD APPROXIMATELY 3 FT. OFF THE BOTTOM AT THE NORTHERN END, AND A SAND SCOUR AT THE SOUTHERN END EXPOSED APPROXIMATELY 6-8 FT. OF THE WRECK (3-4 FT. BELOW THE SURROUNDING BOTTOM). (ENTERED MSM 10/89)

H10668/97 -- OPR-C399-RU; 200% SIDE SCAN SONAR SEARCH LOCATED ONE SIGNIFICANT CONTACT. SWMB LD OF 11.0 METERS (36 FEET). EVALUATOR RECOMMENDS DELETING THE CHARTED 39 AND 36-FOOT OBSTRUCTIONS AND CHARTING A 36 OBSTN AS SURVEYED. (UP 12/22/04, SJV)


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USS Algol

by Michael C. Barnette

PCBs

Poly-chlorinated biphenols (PCBs) and heavy metals ( Pb, Cu, Ni, Cd, Zn, Ag, and Hg ) have become an issue of concern with artificial reef development, as popular reef building materials ( e.g., ex-Navy vessels ) may contain quantities of these toxic materials that may potentially be transferred through the food chain. This transference, or bioaccumulation, may have unforseen effects on the marine environment and, ultimately, human health through consumption of contaminated finfish and shellfish harvested from these reefs. However, thousands of ships have met their demise without the environmental cleansing and preparation that artificial reefs require, perhaps posing a potentially greater health risk to consumers and divers.