HS Code for Marine steam turbines

Marine steam turbines are classified under HS code 8406.10. Heading 84.06 covers steam turbines and other vapor turbines. The classification system differentiates these turbines based on their primary application. Subheading 8406.10 is specifically designated for turbines used for marine propulsion. These machines convert the thermal energy of steam into mechanical work to drive the propulsion system of a ship. The classification is determined by the intended use and the specific design features that make the turbine suitable for marine environments, such as specialized bearings, casing designs, and integration with marine gearboxes. This distinguishes them from steam turbines used in land-based power plants for electricity generation, which are classified under subheadings 8406.81 or 8406.82 depending on their power output. Accurate classification requires technical specifications showing the turbine's rated power and its configuration for marine use. It is also important to distinguish these from gas turbines, which fall under heading 84.11. The presence of specialized marine features, such as reversing stages or specific lubrication systems for sea conditions, helps confirm the classification under 8406.10. The turbine may be imported as a single unit or as part of a complete propulsion set.

Products Included

• Main propulsion steam turbines for ships
• Steam turbines for naval vessels
• Vapor turbines for marine propulsion
• High-pressure marine turbine units
• Low-pressure marine turbine units

Common Misclassification

Marine steam turbines are often confused with turbines used for electrical generation, which are classified under HS codes 8406.81 or 8406.82. They are also sometimes misclassified as gas turbines, which fall under heading 84.11, or as parts of boilers under heading 84.02.

FAQ

What is the HS code for Marine steam turbines?

The HS code for steam and other vapor turbines for marine propulsion is 8406.10.

Does this code include the gearbox?

Generally, no. While the turbine is 8406.10, the reduction gears used in marine propulsion are typically classified under HS code 8483.40.