u05 - AWOIS 7940

H10224/86-88 -- OPR-C121-WH-86-88; SIDE-SCAN SONAR AND DIVER INVESTIGATION OF CONTACT SHOWING DEFINITE WRECK CHARACTERISTICS; DIVERS FOUND A DETERIORATED WOODEN VESSEL WITH ROTTED WOODEN DECK PLANKING WHICH WAS MOSTLY SILTED OVER BY SAND; ONLY LARGE DECK TIMBERS REMAIN; NO MACHINERY FOUND; RIBS WERE OBSERVED RISING UP OFF THE BOTTOM ALONG THE EASTERN SIDE OF WRECK; DIVER GAUGE LEAST DEPTH TAKEN ON TOWING BITS AT THE NORTHERN END OF WRECK; LARGE DECK TIMBERS WERE SEEN ON WESTERN SIDE OF WRECK; 50 FT SW OF MAIN WRECKAGE, DIVERS FOUND WHAT APPEARS TO BE A PORTION OF THE SAME WRECK, RUNNING NW-SE, WOODEN RAIL-LIKE TIMBERS STICKING UP OFF THE BOTTOM 6-8 INCHES; ALSO APPEARS TO BE DETERIORATED; ON SECOND DIVE, A PILE WAS DISCOVERED ABOUT HALFWAY DOWN THE WRECK AND A PNEUMATIC DEPTH GAUGE LEAST DEPTH OF 46 FT WAS TAKEN ON IT; BEAM MEASURED 40 FT; LENGTH WAS 120 FT. (ENTERED MSD 4/91)


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scallop dredge
Scallop

Scallop dredging is similar to clam dredging in that large metal rakes are dragged across the bottom. However, that is where the resemblance ends. Since scallops live on the surface, unlike buried clams, they can be harvested with much lighter-weight gear. A scallop rake is typically much smaller than a clam rake, consisting of a triangular frame with a chain-link catch-bag. No hydraulics are necessary. Such gear does not require as much towing power as for clamming. Since scallops are cleaned at sea as they are caught, and all the heavy shells discarded, there is also much less on-board storage requirement. Scallop boats can therefore be smaller than clam boats, and some are quite small indeed. In fact, the entire business model seems to be different, and it appears that a few small privately-owned operations persist to this day, in contrast to clamming, which is now dominated by a few corporate fleets.