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Various Standards of Bunker Fuel

  • ISO Standard 8217
  • British Standard BSMA 100 / CIMAC specifications.
  • Main / Aux. Engine IFO 380 is = ISO Standard RMH 35
  • Main / Aux. Engine IFO 180 is = ISO Standard RMH 25
  • Aux. Engine : MDO is equivalent to ISO Standard DMBISO 

ISO Standard 8217
The latest standard is ISO 8217 issued in 2017. The ISO standard describe four qualities of distillate fuels and 10 qualities of residual fuels.

Marine distillate fuels
Density at 15 °Ckg/m3Max-890.0900.0920.0
Viscosity at 40 °Cmm²/sMax5.
Water% V/VMax--0.30.3
Sulfur% (m/m)Max1.
Aluminium + Siliconmg/kgMax---25
Flash point°CMin43606060
Pour point, Summer°CMax-066
Pour point, Winter°CMax--600
Cloud point°CMax-16---
Calculated Cetane IndexMin454035-

Marine residual fuels
ParameterUnitLimitRMA 30RMB 30RMD 80RME 180RMF 180RMG 380RMH 380RMK 380RMH 700RMK 700
Density at 15 °Ckg/m3Max960.0975.0980.0991.0991.0991.0991.01010.0991.01010.0
Viscosity at 50 °Cmm²/sMax30.030.080.0180.0180.0380.0380.0380.0700.0700.0
Water% V/VMax0.
Sulfur% (m/m)Max3.
Aluminium + Silicon2mg/kgMax80808080808080808080
Flash point°CMin60606060606060606060
Pour point, Summer°CMax6243030303030303030
Pour point, Winter°CMax0243030303030303030

  • IFO 380 - Intermediate fuel oil with a maximum viscosity of 380 centistokes (<3.5% sulphur)
  • IFO 180 - Intermediate fuel oil with a maximum viscosity of 180 centistokes (<3.5% sulphur)
  • LS 380 - Low-sulphur (<1.0%) intermediate fuel oil with a maximum viscosity of 380 centistokes
  • LS 180 - Low-sulphur (<1.0%) intermediate fuel oil with a maximum viscosity of 180 centistokes
  • MDO - Marine diesel oil.
  • MGO - Marine gas oil.
  • LSMGO - Low-sulphur (<0.1%) Marine Gas Oil - The fuel is to be used in ECA Ports and Anchorages. 
  • ULSMGO - Ultra-Low-Sulphur Marine Gas Oil(sulphur 0.0015% max)


  1. Very informative article, Which you have shared here about the bunker fuel. Your article is very useful for us because it nicely describes the various standards of bunker fuel. Thanks for sharing this article here.


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