Japan’s first LNG gas fuelled tugs

02 Feb 2015
The new 28AHX-DF dual-fuel engine will be used aboard Japan’s first LNG gas fuelled tugs

The new 28AHX-DF dual-fuel engine will be used aboard Japan’s first LNG gas fuelled tugs

Classification society, ClassNK, has granted full type approval for the new 28AHX-DF dual-fuel engine built by Niigata Power Systems Co Ltd.

ClassNK’s streamlined approval process has allowed it to complete the design approval, trial operational testing, and the overhaul inspection of the 28AHX-DF in just a couple of months before granting type approval late last year.

Yukihisa Shibata, general manager, ClassNK’s machinery department, said: “At ClassNK we aim to promote the use of innovative technologies for the benefit of the greater maritime industry. Our highly efficient approval process minimises the time necessary for new products to gain approval, making it easier for ship manufacturers to implement new technologies into ship designs as soon as they emerge.”

The new dual fuel engine has a maximum rated power per cylinder of 320kW with a maximum rated speed of 800 min-1, a cylinder bore of 280mm and a 390mm stroke. It will be used aboard Japan’s first LNG gas fuelled tugs.

This engine will not only help mitigate environmental loads but will also assist shipowners and operators in meeting the stringent IMO Tier III NOx regulations in Emissions Control Areas (ECA).

These new regulations are due to go into effect on or after 1 January 2016 and will reduce NOx emissions by more than 75% down from the current Tier II regulations.

Links to related companies and recent articles ...

ClassNK

view more