u13 - AWOIS 7932

H10224/86 -- OPR-C121-WH-86; WHILE INVESTIGATING ITEM 751, AN AREA WITH NUMEROUS SIDE-SCAN SONAR CONTACT WAS FOUND AND DEVELOPED USING SIDE-SCAN AND ECHO SOUNDER; DIVER INVESTIGATION DETERMINED LIMITS OF SITE, NATURE OF WRECKAGE, AND LOCATION OF THE LEAST DEPTH; SITE WAS ORIENTED NORTHEAST-SOUTHWEST; CONSISTS MOSTLY OF SHIPYARD DEBRIS IN THE FORM OF HEAT EXCHANGERS, BUCKLED DECK PLATING, TWISTED ANGLE IRON, WOODEN RIBS, AND PIPING OF VARIOUS LENGTHS AND SIZES; THE NORTHEAST END OF THE SITE CONSISTED OF A BARGE LYING IN A NORTHWEST-SOUTHEAST DIRECTION WITH THE BOW OF THE BARGE DEFINING THE SOUTHEAST WALL OF THE SITE; THE NORTHWEST END OF THE BARGE, THE STERN, WAS COVERED WITH METAL DEBRIS, HAWSER LINES, AND TRAWLER NETTING; DIVERS CONCLUDED THAT THIS SITE IS THE WRECK OF A BARGE THAT WAS FILLED WITH SHIPYARD SCRAP IRON AND DEBRIS; PNEUMATIC DEPTH GAUGE LEAST DEPTH OF 50 FT. (ENTERED MSD 4/91)


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Atlantic Mackerel

Scomber scombrus

Size
to 22" and 7 lbs.

Description
The Atlantic Mackerel is typically an open ocean fish with voracious feeding habits. They travel in schools that often contain thousands of fish. The swift swimming mackerel has a streamlined body and swims at high speeds for extended periods of time searching for food. All individuals within a specific school tend to be the same size. Since cruising speed increases significantly with age and size, scientists believe that conformity of body size within a specific school is necessary to allow all fish to maintain identical swimming speeds. Mackerel may grow as large as 7-1/2 pounds and have a maximum age of about 20 years.