Remote commissioning enables Mitsubishi Shipbuilding to complete scrubber retrofits

Written by Nick Blenkey
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Rectangular shape scrubber can be installed in containerships without losing box capacity

Mitsubishi Shipbuilding reports that its DIA-SOx scrubbers have been successfully installed on 22 ships of three vessel types in the past eight months. Despite COVID-19 restrictions, Mitsubishi Shipbuilding was able to complete the installations as scheduled, carrying out remote commissioning conducted through close communication and cooperation with the engineers of its local partners in China and Singapore..

The DIA-SOx line-up consists of the R Series and C Series. The rectangular tower design of the R Series is the most suitable for containerships and its multi-stream configuration can, with one tower, simultaneously treat exhaust gas discharged from multiple engines, including the large main engine. Additionally, its simplified configuration helps the ship crews to conduct maintenance more easily. The C Series with cylindrical tower design also features the multi-stream configuration, offering high flexibility that can be easily installed onboard various types of the ships.

Mitsubishi Shipbuilding provides retrofit engineering for installations of both types of scrubbers.

Arrangement of a scrubber onboard a 14,000 TEU containership (left), and exterior after installation (right)

For eight 14,000 TEU containerships for which Mitsubishi Shipbuilding provided engineering services in addition to the scrubber systems, the scrubber tower was installed in the built-in casings on the port side of the existing funnel, which meant that the scrubber system was installed without reducing the ships’ container capacity. This is one of the advantages of the rectangular tower shape of the R Series.

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