Features of new marine dredging ship Pen Avon which proved successful in applying new principle of 'pushing' up gravel from greater depths where conventional methods are ineffective; 1200 tons of gravel can be loaded in 2 to 3 hr; dredging head of 155-ft pipe is lowered to sea bed and positioned by remote control from bridge; hydraulic pumps powered by main engine, supply high pressure water to dredging head which returns to hold carrying gravel; surplus water goes overboard through spillways.
Modern dredge for marine gravel production
World Dredging and Mar Construction
World Dredging and Marine Construction ; 3 , n 3
1967
Article (Journal)
English
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