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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white pine
Eastern White Pine (softwood)
red oak
Red Oak (hardwood)

All woods turn black after prolonged immersion.

Botanically, wood is the xylem tissue that forms the bulk of the stem of a woody plant. Xylem conducts sap upward from the roots to the leaves, stores food in the form of complex carbohydrates, and provides support; it is made up of various types of cells specialized for each of these purposes. Among them are tracheids, elongated conduction and support cells; parenchyma ( food storage ) cells, some of which form rays for transverse conduction; xylem vessels, formed of hollow cells joined end to end; and fiber cells that reinforce these tubes. In the conifers the xylem is made up mainly of tracheids, thus presenting a uniform, nonporous appearance; their wood is called softwood. Deciduous trees have more complex xylem, permeated by vessels, and are called hardwoods, although the description is sometimes inaccurate.