Høglund Gas Solutions has signed a contract with oilfield services provider Halliburton to provide a turnkey retrofit of 5,932-dwt roro combination carrier Hannah Kristina
Hannah Kristina is owned by Base Marine Norway, is under technical management by Larvik Shipping and end chartered by Hallburton. The ship can operate dry bulk, wet bulk and general cargo.
The retrofit aims to improve the 20-year-old vessel’s environmental footprint by converting the marine diesel oil-fuelled vessel to run on dual fuel by supplying an LNG fuel gas supply system (FGSS) alongside an upgrade with a shore power connection.
The Høglund-led project will see extensive collaboration between naval architects, engineering teams, a retrofit shipyard, suppliers, class society, flag state and the vessel owners and operators. Classification society DNV will certify the project.
The scope consists of a 250-m³ capacity FGSS with a dedicated gas control and safety system to serve the already installed dual-fuel engine with natural gas. For the shore-power upgrade that will be used to power the vessel while berthing and to charge the energy storage system (ESS), Høglund will supply and install a package consisting of shore connection cabinets of 690 V/600 kVA compatible with state-of-the-art shore power supply, following IEC80005-3 standards.
Both systems will be integrated into the existing automation system, power management system and ESS control system of the vessel which were delivered and installed by Høglund in 2018.
To ensure the appropriate IGF code-compliant safety measures are implemented, Høglund will work with German naval architechts HB Hunte Engineering to further modify Hannah Kristina. Among other conversions, it will adjust the mooring arrangement in the LNG tank area and upgrade the ventilation system. Høglund will also collaborate with Fiskerstrand Verft – a firm specialising in repairs.
With the use of LNG and battery power, the vessel is expected to make significant reductions to its CO2 and NOx emissions. The project is supported by the Norwegian NOx Fund – a partnership between the Norwegian Government and the private sector committed to reducing NOx emissions in the country.
Høglund senior project manager Philipp Ulrich said “The technological and environmental transformation of shipping over the coming years is one of the biggest challenges facing our industry.
"To achieve this transformation in a commercially viable and minimally disruptive way, meaningful and well-co-ordinated collaborations are essential. I’m proud that Høglund has been chosen for this project and we are looking forward to leading a consolidated and collaborative effort by working with this diverse set of stakeholders.”
Halliburton Norway vice president Jean-marc Lopez said “With the conversion of Hannah Kristina from diesel to LNG and shore power, we take the reduction of CO2 and NOx a step further, in line with our strategy to continue to reduce the environmental footprint of our activities.”
The retrofitted Hannah Kristina is expected to be delivered in March 2022.
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