The 416D has a digging depth of 14 ft. 5 in. with the standard stick and 18 ft. 1 in. with an extendable stick. The 420D has a backhoe digging depth of 14 ft. 5 in. when equipped with the standard stick while the 430D has a digging depth of 15 ft. 3 in. with a standard stick. Extendible sticks push the 420D''s dig depth to 18 ft. 1 in. and drillpressx-ytable 19 ft. 11 in. for the 430D. All three machines now feature 205[degrees] rotation of the backhoe bucket linkage, 40[degrees] more than the C-Series machines. "This new design feature makes it easier to dig vertical walls and to clamp material for truck loading," said Hershberger. In addition, the backhoe buckets now feature single pin position and drillpressx-ytable all former models'' buckets and Cat work tools can be used on the D-Series. The bucket link now has an integrated lifting eye.

Aban Loyd Chiles Offshore Ltd. (ALCO)ABAN IIRIG DESIGN: Bethlehem Steel Corp., JU-250MSCONSTRUCTION: Bethlehem Steel Corp., Sparrows drillpressx-ytable Point, Md, 1981.PERFORMANCE: Water depth--250''; Drilling depth--25,000''.QUARTERS: 65 persons.HULL: 166'' x 132'' x 16''.VARIABLE LOAD: 4,500 kips.STORAGE: Mud & Cmt Bulk--6,600 cf; LiquidMud--1,500 bbl; Water for Drilling--4,700 bbl;Potable Water--450 bbl.DRILLING EQUIPMENT: Drawworks--MIDCO1220; Pumps--Gardner Denver PZ-11, 1,600 hp;Prime movers--three 12 cyl EMD, 1,650 hp each;

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