u02 - AWOIS 12966/11422

AWOIS 12966:

H10675/96-97 -- OPR-C399-RU; 200% SIDE-SCAN SONAR LOCATED A LARGE RECTANGULAR, UNCHARTED OBSTRUCTION. DIVERS DESCRIBE A BARGE WITH SURROUNDING SCOUR. BARGE RELIEF IN SCOUR IS 2.4 METERS (8 FEET) BUT NEARLY LEVEL WITH THE BOTTOM. LD OF 8.1 METERS (26 FEET) (ENT 12/23/04, SJV)

AWOIS 11422:

H10675/96-97--OPR-C309-RU; INVESTIGATED USING 200% SIDE-SCAN SONAR, SEABAT YIELDED A LEAST DEPTH OF 26 FEET. SONAGRAMS SHOWED A LARGE RECTANGULAR MAN-MADE OBSTRUCTION. DIVER INVESTIGATION FOUND A BARGE WITH SURROUNDING SCOUR OF ABOUT 8 FEET. HYDROGRAPHER RECOMMENDS CHARTING THE 26 FOOT SOUNDING AS 26 WK. (ENT 03/02, PSH)

Note: This spot is directly off the end of the Navy pier. I'm not sure what the Navy would think of anyone diving there. It is also likely that it has been dredged away.


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Red Beard Sponge

Sponges grow at all depths, and in brackish and freshwater also. They may occur as thin encrusting coatings on rocks and wood, or as long thin branching fingers attached to the bottom, or in the typical rounded form that has been used for centuries as ... a sponge!

The Red Beard Sponge Microciona prolifera is the commonest and most colorful of several sponges that grow in the region. Sponges also occur in shades of yellow and white and often grow in a much lower, spreading, and encrusting form, especially in areas of high currents. They are the most primitive of multi-celled animals, lacking distinct tissues and organs.