First GPA 696 IMR vessel delivered to BourbonVessel & ROV News // August 1, 2011
Zheijang Shipyard has delivered the first GPA696 IMR vessel to Bourbon.
On June 14 2011, the first of 10 GPA 696 Inspection, Maintenance & Repair (IMR) vessels was delivered to Bourbon Offshore at Zheijang Shipyard in China.
Seattle-based Guido Perla & Associates was responsible for the concept design, regulatory package, and final design of the vessels.
The highly maneuverable DP-3 and FiFi-1 certified GPA 696 IMR vessels are equipped with three 1,686 kW azimuthing drives, two 843 kW tunnel bow thrusters, one 843 kW drop-down azimuthing bow thruster delivered by Schottel and six 1,235 kW Cummins generators, as well as one 1,235 kW auxiliary generator and one 450 kW emergency generator.
The configuration of the environmentally friendly diesel-electric propulsion system, including two engine and two electrical rooms, creates full redundancy in accordance with DP-3 requirements.
The diesel-electric propulsion system also results in reduced maintenance cost and improved station-keeping at offshore installations, and significantly increases crew safety.
Because of its design and standardization, claims GPA, the GPA 696 IMR series can compete with more expensive, similar-sized vessels, reducing operational cost to the customer by up to 20 per cent.
The deck equipment on the 100m vessels includes one 150 tonne @ 10m radius main crane which can lower packages to a depth of 3,000m and one 40 tonne @ 9m radius deck crane.
Both cranes, with built-in swell compensation systems, cover the entire 1,200 m² deck surface to ensure handling and storage of packages over the entire area.
The SOLAS-certified IMR vessels also have significant below-deck cargo capacities, capable of carrying 380m³ of methanol, 2,541m³ of ballast, 1,080m³ of fuel oil and 749m³ of fresh water.
The vessels are also equipped with a helideck designed for a Super Puma Helicopter EC225.
Versatility is another main benefit as the vessels have the capability to adapt to different operational needs and can serve as a stimulation vessel, rescue vessel, hotel vessel or provide light intervention on wells while offering modern conditions aboard with meeting rooms, offices, lounges and comfortable cabins.
The vessel design allows for the following configurations:
- ROV vessel: two ROVs can be used at the same time
- Deck cargo: maximum deck cargo is 2,080 tonnes
- Hotel vessel: accommodation for 105 people on board under comfortable working conditions
- Mini-FPSO vessel: increased freight loading capacity with a storage capacity of 24,000 barrels of crude oil
- Intervention vessel.
One of the remarkable features of these vessels is the ability to operate both cranes and both ROVs simultaneously over the complete operating envelope of the vessel without any restrictions. These vessels are certified to satisfy both the current IMO deterministic and probabilistic damage stability requirements.