HFHSD – IN 512

Jan. 15, 2020

Vice Admiral G S Pabby launched the Upgraded High Flash High-Speed Diesel (HFHSD- IN 512), a special class diesel conforming to NATO grade for use in ships and vessels of Indian Navy.


  • Developers: The upgraded HFHSD blend has been developed by State-owned Indian Oil Corporation Limited (IOCL) and is being supplied from Haldia and Paradip refinery.

  • Features:
    • The customized HFHSD- IN 512 has the unique combination of low pour and Cold filter plugging point (CFPP) and High Flash Point.

    • It has the highest cetane number amongst all marine diesel fuel and exceeds MIL-DTL 16884M specifications in terms of Fuel Hygiene parameters and other critical properties.

  • Significance:
    • The upgraded fuel now exceeds the MIL DTL 16844M specifications which is considered benchmark standard across in the world.

    • This fuel will facilitate the Indian Navy to enhance its global footprint and will allow India to fuel the vessels of friendly foreign countries at places where fuel conforming to NATO grade is supplied.

    • It also has lesser environmental impact due to low Sulphur content and would result in the better performance of engines.

Source : PIB