A Shell-chartered LNG carrier that is more than a decade old has been fitted with an air lubrication system, yielding significant fuel and emissions savings during testing, says the supplier
Silverstream Technologies reported its Silverstream system was fitted on 2010-built, 170,000-m3 LNG carrier Methane Patricia Camila during its October 2020 planned drydocking at the Sembcorp Marine Admiralty Shipyard in Singapore. From design through to installation, the system was reviewed and approved by ABS in accordance with their guidance note for air lubrication technology.
Following operational testing of the retrofitted technology, Silverstream and Shell engineers demonstrated 6.6% net savings generated by the Silverstream system. The technology was tested at various vessel speeds during Methane Patricia Camila’s normal operations to calculate fuel and emissions savings.
To improve fuel efficiency and reduce greenhouse gas emissions, the Silverstream system produces a thin layer of microbubbles along the full flat bottom of the vessel, reducing frictional resistance between the water and the hull. Air lubrication systems are becoming increasingly important to help improve energy efficiency in newbuilds and in existing vessels, underpinning shipping’s decarbonisation goals.
Built in 2010 by South Korea’s Samsung Heavy Industries, Methane Patricia Camila has a length overall of 291.1 m, beam of 45 m, and draught of 12.5m, with GTT Mark III cargo containment system and a boil-off rate of 0.15% per day, according to UK-based ship valuation firm VesselsValue (VV). Commercially controlled by Shell Trading and Shipping Co, Methane Patricia Camila has a fair market value of US$112.57M, according to VV.
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