GVA7500 Semi-Submersible

GVA7500 Semi-Submersible

DP3 Deep Water Drilling Unit for Harsh Environment

Customers: GVA Consultants AB
Owner: SeaDrill Ltd
Shipyard: Daewoo Shipbuilding & Marine Engineering Co

Main dimensions:

LOA 116.6 m
Beam over all 96.7 m
Beam outside pontoons 78.1 m
Height, baseline to upper deck 45.0 m
Length of pontoons 108.8 m
Max. drilling draught 25.0 m
Draught, transit 9.9 m
Capacities Payload in operational condition approx. 7.000 – 7.800 tonnes.
Accommodation 120 persons (outside North Sea area up to 158 persons)
Electric power system with 8 x diesel generators 4860 kW each
Propulsion power with 8 x thrusters 3500 kW each
Classification DNV Offshore Rules, NMD, UK HSE, IMO, NORSOK


Under GVA-C’s Management Deltamarin participated in the following design commissions for the GVA7500 semi-submersible drilling unit:

  • Basic system engineering arrangements, calculations, system PIDs, conceptual routings and preliminary weight estimations for machinery, ventilation and HVAC.
  • El. equipment arrangements, load analysis, functional descriptions, block diagrams and single line diagrams for electric and instrumentation
  • Accommodation lay-outs, insulation plans, floor coverings and safety plan.
  • Scope 16,800 hours
Esa Jokioinen
Sales, offshore
Tel. +358 2 4336 344
Mobile +358 40 834 8112
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