Sperry Marine MK 37 Gyrocompass
The Sperry Marine MK 37 is a non-electrical gyroscopic compass designed for marine navigation, utilizing mechanical gyroscopes to maintain directional reference without relying on electrical power for the core gyro mechanism. It falls under HTS 9014.10.60.00 as a gyroscopic compass other than electrical, specifically for direction finding in maritime applications. This model is widely used on commercial vessels for reliable heading information.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If incorporating modern electrical readouts or interfaces
Addition of electrical components shifts classification to other navigational instruments with electrical elements.
If for aircraft-specific mounting and certification
Aviation gyrocompasses fall under ranging and bearing instruments tailored for aerial use.
If sold as a measuring instrument without primary compass function
Repurposed gyros for precision angle measurement are classified as other optical measuring devices.
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Import Tips & Compliance
• Verify the compass is certified non-electrical gyroscopic per manufacturer specs to avoid reclassification under electrical headings
• Include maritime type-approval certificates and gyro mechanism diagrams in documentation for customs clearance
• Beware of pitfalls like incomplete vibration resistance testing reports, which can delay approval for shipboard use
Related Products under HTS 9014.10.60.00
Rice Meridian Gyrocompass System
The Rice Meridian is a traditional mechanical gyrocompass for offshore supply vessels, featuring hydraulic north-seeking gyros not powered electrically. Under HTS 9014.10.60.00 for gyroscopic direction finding compasses other than electrical. It provides robust performance in dynamic sea conditions.
Plath Navigat B Gyrocompass
The Plath Navigat B is a mechanical gyroscopic compass for naval and merchant ships, providing stable heading data through fluid-damped gyroscopes independent of electrical power. Classified under HTS 9014.10.60.00 for its non-electrical gyroscopic design used in direction finding. It ensures accurate navigation in harsh marine environments.
Anscher N-300 Mechanical Gyrocompass
The Anscher N-300 is a compact, non-electrical gyroscopic compass for smaller vessels, relying on pre-cession mechanics for north-seeking accuracy. It is categorized under HTS 9014.10.60.00 as a direction-finding gyrocompass excluding electrical variants. Ideal for coastal navigation where reliability trumps electronic dependency.
Arma Brown Gyrocompass Model 14
The Arma Brown Model 14 is a legacy non-electrical gyrocompass used in military surplus for training simulators, employing mechanical gimbals and gyros. It fits HTS 9014.10.60.00 as a gyroscopic direction finder excluding electrical types. Valued for its historical accuracy in navigational instruction.
Decca Navigator Gyrocompass
The Decca Navigator gyrocompass uses mechanical gyro principles for surface vessel heading stabilization, non-electrical in core operation. Classified in HTS 9014.10.60.00 for other gyroscopic compasses in direction finding. Complements radio navigation systems reliably.
Kearfott Mechanical Gyrocompass
Kearfott's mechanical gyrocompass employs spun rotor gyros for inertial north alignment in non-electrical configuration for yachts. HTS 9014.10.60.00 applies to this direction-finding navigational appliance. Suitable for recreational and small commercial boats.