cated horse power is water ; his material a piece of soft white pine 12 or 14 trated the big dredges which are in use by the United States government on the Mississippi River, and of these the “ Beta” is credited with a record of between seven hundred and eight:thousand cubic yards of ma- terial… … is direct-connected to a 125 horsepower electric motor. The shafts are arranged at an angle of about thirty Fig. 8.—A COMPLETED FAN. degrees with the center line of the vessel, and they not only co-operate with the twin propellers at the stern four suction pipes, which are attached near the bow of…
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