DRILLING EQUIPMENT: Drawworks--one Nat''l1320 UE; Pumps--two Nat''l 10-P-130 Triplex;Prime movers--five Cat. D-399TA; RotaryTable--Nat''l 0-375.DERRICK: 147''; Pyramid; 1,392,000 lb hook load.BOP SYSTEM: CIW 10,000 psi.CRANES: Two 33t.MOORING: Three x 5.44 t.WORK AREA: Bohai Gulf, China.BOHAI NO. 5RIG DESIGN: Bohai Oil Corp. VHT-904.CONSTRUCTION: Dalian Shipyard, China, 1983.PERFORMANCE: Water depth--40 m; Drilling depth--6,000 m.QUARTERS: 102.HULL: 76 m x 34 m x 5.5 m.VARIABLE LOAD: 1,500 t.HELIPORT: 17.2 m x 18.5 m.

The 416D has a digging depth of 14 ft. 5 in. with the standard stick and 18 ft. 1 in. with chinamadefloordrillpresses 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 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 chinamadefloordrillpresses new design feature makes it easier to dig vertical walls and to clamp material for truck loading," chinamadefloordrillpresses said Hershberger. In addition, the backhoe buckets now feature single chinamadefloordrillpresses pin position and all former models'' buckets and Cat work tools can be used on the D-Series. The bucket link now has an integrated lifting eye.

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