GVA 7500

The GVA 7500 features a variable deck load capacity of 7500 mt in operational and survival conditions. It has favourable motion characteristics for efficient and reliable operation also in severe weather conditions. The safe design provides with optimal strength, stability and intact stability. Low operation and maintenance costs together with a large deck area for storage of cargo adds value for any owner


 

Operation area               World wide use including North Sea.
                                       From mild to harsh weather conditions

Operation water depth   3,000 m (10,000 ft)

Drilling depth                  Up to 12,000 m (40,000 ft)
Regulations                    Norwegian NMD & PSA, UK HSE, US Coast

                                       Guard IMO MODO Code 2001, IMO DP Class 3

Classification                  DNV, ABS or Lloyd’s

Accommodation             160 persons

 MAIN PARTICULARS  

 Length over all:

 118.6 m

 389.1ft

 Width over all:

 96.7 m

 317.3 ft

 Width outside pontoons:

 78.1 m

 256.2 ft

 Length of pontoons:

 108.8 m

 356.9 ft

 Height  of pontoons:

 10.2 m

 33.6 ft

 Height to Main Deck:

 45.0 m

 147.6 ft

 Height of deck box:

 8.5 m

 27.9 ft

 Four columns:

 18.4 x 14.4 m

 60.4 x 47.2 ft

 Transit draught:

 9.9 m

 32.3 ft

 Transit displacement:

 41,300 mt

 45,522 ft

 Transit deck & column P.load:

 5,800 mt

 6,393 ft

 Operation draught:

 23.0 m

 75.5 ft

 Operation displacement:

 56,150 mt

 91,890 st

 Operation deck & column P.load:

 7,500 mt

 8,267 st

 Survival draught:

 19.0 m

 62.3 ft

 Air gap in survival:

 17.5 m

 57.4 ft

 MAIN MARINE SYSTEMS/EQUIP.                      

 Power generation:

 8 x 5,040 kW    8 x 6,700 HP

 Thruster:

 8 x 3,800 kW    8 x 5,100 HP

 Thruster control:

 DP 3

 Mooring system:

 8 point, all chain

 Main deck cranes:

 2 x 85 mt                   2 x 93 st

 MAIN DRILLING SYSTEMS/EQUIP. 

 Derrick for up to 135 ft stands:

 908 mt

 1,000 st

 Top drive:

 908 mt

 1,000 st

 Drawwork

 908 mt

 1,000 st

 Riser tensioners, N-line type:

 1,630 mt

 1,800 st

Drilling riser, 75 ft joints

 2,000 kips flange rating

 Mud pumps:

 4 x 1,700 kW

 BOP Stack:

 15,000 psi, 6 rams

 TANK/STORAGE CAPACITIES

 Fuel oil:

 3,000

 18,870 bbls

 Drill water:

 2,600

 16,350 bbls

 Potable water:

 1,300 m³

 8,180 bbls

 Mud Storage, col+pont:

 1,600 m³

10,060 bbls

 Mud pits:

 900 m³

 5,660 bbls

 Brine:

 750 m³

 4,710 bbls

 Base oil:

 750 m³

 4,710 bbls

 Bulk mud:

 620 m³

 22,000 cbft

 Bulk cement:

 280 m³

 10,000 cbft

Sack storage:

 250 m³       

   2,690 sqft

 

 

References

West Hercules