Marine Gas Oil (MGO) is a refined petroleum distillate used widely in the global maritime industry. As shipping companies work to reduce emissions and comply with international regulations, MGO stands out as a cleaner alternative to traditional heavy fuels. It is particularly valuable for operations in Emission Control Areas (ECAs) and for vessels requiring high-performance fuel.
HS Code and CAS Number for Marine Gas Oil
For trade and customs purposes, Marine Gas Oil is classified under the HS Code 27101943. This classification refers to “Gas oils other than biodiesel blends, for marine engines.”
The CAS (Chemical Abstracts Service) Number for Marine Gas Oil is 68334-30-5, which helps identify the substance in regulatory and scientific documentation.
Composition and Characteristics
Marine Gas Oil consists of refined hydrocarbons with low viscosity and low sulfur content, usually under 0.1%. This ensures compliance with IMO 2020 sulfur cap regulations. It provides high ignition quality and clean combustion, minimizing the formation of sludge and carbon deposits.
Applications of MGO in Shipping
MGO is suitable for a variety of vessels, including:
Coastal ships
Passenger ferries
Fishing boats
Tugboats
In larger ships with dual-fuel capabilities, Marine Gas Oil is often used during port entry or in regulated waters. This switch ensures compliance with environmental laws without retrofitting engines or installing scrubbers.
MGO vs Other Marine Fuels
Compared to residual fuels like Heavy Fuel Oil (HFO), MGO offers:
Easier storage and handling due to its low viscosity
Cleaner engine operation with fewer emissions
Faster ignition and smoother combustion
Despite being costlier, the performance benefits and environmental compliance it offers make MGO a preferred fuel in many scenarios.
Key Benefits of Marine Gas Oil
Environmental Compliance – Ideal for use in ECAs with strict sulfur limits
Improved Engine Health – Reduces wear and maintenance frequency
Operational Versatility – Suitable for a wide range of marine engines
Global Availability – Readily available at major ports around the world
Challenges and Industry Trends
The main challenge with MGO comes from its higher price compared to regular marine fuels. Even so, many shipowners save money in the long run because MGO lowers maintenance costs and helps them avoid fines for breaking emission rules. Industry trends are also shifting toward the integration of bio-MGO and synthetic alternatives, though MGO still holds the majority share in marine fuel consumption.
Storage and Handling Best Practices
You need to store MGO in clean tanks and keep it away from water and germs. To protect the fuel quality, regularly filter it, clean the tanks, and check the temperature. Operators should follow proper procedures when switching from residual to distillate fuels to prevent thermal shock in engines.
How to Buy Marine Gas Oil (MGO)
Purchasing MGO involves:
Choosing Certified Suppliers – Ensure the supplier provides ISO 8217-compliant fuel
Verifying HS and CAS Codes – Especially when clearing shipments at customs
Comparing Sulfur Levels and Price – To match regional compliance standards
Confirming Delivery Methods – Barge, pipeline, or truck, depending on the port
In short
Marine Gas Oil is an essential marine fuel that balances performance, cleanliness, and compliance. With a trusted HS Code (27101943) and CAS Number (68334-30-5), MGO is recognized worldwide in both regulatory and commercial settings. As the maritime industry moves toward more sustainable fuel options, MGO will continue to serve as a reliable and cleaner choice for today’s ships.