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Development of a submarine sand recovery system for Hawaii / by Frederick M. Casciano.

by Casciano, Frederick M. (Frederick Michael)

[Honolulu] : University of Hawaii Sea Grant Program 1973.

Sand -- Hawaii.

14 pages : illustrations ; 28 cm.

A unique system for mining ocean bottom bottom sand from a small vessel was conceived and developed under the University of Hawaii's Sea Grant Program. Called the Submarine Sand Recovery System, or SSRS, it consists primarily of a suction probe which buries itself in thick deposits of sand by hydro-jet action and removes large cones of sand which can be transferred to shore for beach replenishment. The probe is handled on the bottom by divers with the aid of a special underwater lifting drum. The head is fitted with a hydraulically powered roller-crusher to grind up coral, rock, and shell fragments at the sand inlet. It is expected tht under certain conditions the system will provide a more economical and ecologically sound means of recovering offshore sand than is offered by conventional dredging systems. Laboratory and ocean tests were conducted on a series of models. A prototype (6-inch diameter pipe) was constructed and underwent preliminary testing in November of 1972.

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