IACS member class society, Korean Register (KR) has facilitated the successful conversion of the Madison Orca, a 320,000 dwt ore-bulk-oil carrier to a very large crude carrier.
KR was involved throughout the conversion of the vessel, which is owned by Monarc and managed by Navig8. According to the society, the carrier was converted in a reduced time frame to optimise resources and save costs.
The Madison Orca was built in 2010 by Hyundai Heavy Industries (HHI) as one of eight OBOs. Confident forecasting of the tanker markets led Monarc and Navig8 to take the step of undertaking the conversion to a VLCC to take advantage of the more promising crude oil markets.
The conversion included the installation of five swash bulkheads located in the centre cargo tank; the removal of the cross deck structure and hatch coamings; and construction of new upper deck structures incorporating an additional 2,300 tonnes of steelwork.
The new swash bulkheads were constructed to a bespoke KR design. Not incorporated as part of the original OBO design, their installation was required to enable partial oil loading in the center tank.
IACS Common Structural Rules were applied to the VLCC design. KR carried out in depth testing to ensure performance and safety by undertaking sloshing analysis using Computational Fluid Dynamics (CFD) due to the breadth of the center tank being broader than most conventional VLCCs.