Rolls-Royce WR-21 Marine Gas Turbine
The Rolls-Royce WR-21 is an intercooled recuperated gas turbine optimized for high efficiency in naval vessels like destroyers. Classified under HTS 8406.10.90.00 as 'other' turbines for marine propulsion, it uses vapor (gas) expansion distinct from steam turbines. Its design for intermittent high-speed marine use fits this subheading.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If under 5,000 kW and not marine-specific
Smaller gas turbines classify in 8411.82 if not dedicated to marine use, based on power thresholds and general industrial application.
If paired with integral electric generator
Generating sets with gas turbines fall under heading 8502, treating the combination as a complete power unit rather than propulsion turbine.
If for use in offshore drilling rigs
Other machinery for marine industries like oil rigs shifts to 8436 if not purely for vessel propulsion.
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Import Tips & Compliance
• Provide detailed performance specs including power output and efficiency ratings; check for dual-use restrictions under Wassenaar Arrangement; label clearly as marine propulsion to avoid reclassification
Related Products under HTS 8406.10.90.00
Hybrid Marine Gas Turbine Drive
Gas turbine hybrid with batteries for propulsion in eco-ferries. HTS 8406.10.90.00 as primary vapor turbine. Supports green shipping.
Naval CODAG Gas Turbine
Combined diesel and gas (CODAG) turbine for warships. HTS 8406.10.90.00 for gas component marine propulsion. Boosts sprint speed.
GE LM2500 Marine Gas Turbine
The GE LM2500 is a lightweight, high-power aeroderivative gas turbine used for marine propulsion in frigates, destroyers, and fast ferries. It falls under HTS 8406.10.90.00 as it is a vapor turbine (gas turbine) specifically designed for marine propulsion but not classified as a steam turbine or specific high-speed model under other subheadings. This classification covers other turbines for marine use beyond basic steam types.
MAN Diesel & Turbo Marine Gas Turbine
MAN's marine gas turbines power high-speed ferries and patrol boats with efficient vapor expansion technology. Under HTS 8406.10.90.00, it captures 'other' vapor turbines for marine propulsion excluding standard steam models. This ensures precise tariffing for naval and commercial marine applications.
Vericor TF Series Marine Gas Turbine
Vericor TF40/TF50 series are compact aeroderivative turbines for fast military craft and corvettes. HTS 8406.10.90.00 applies to these 'other' marine propulsion vapor turbines, emphasizing their non-steam vapor cycle operation. Ideal for high-speed intermittent duty.
Turbec T100 Marine Gas Turbine
The Turbec T100 is a microturbine adapted for auxiliary marine propulsion in yachts and small vessels. It fits HTS 8406.10.90.00 as an 'other' vapor turbine for marine use, leveraging gas expansion for efficient power. Suitable for hybrid propulsion systems.