Description
Bottom Line Up Front (BLUF)
The Tengfei GLH 130-40 Marine Navigational Sextant is a precision-machined aluminum alloy optical sextant designed for celestial navigation, vertical/horizontal angle measurement, and SOLAS backup navigation.
1. System Overview & Engineering Architecture
The Tengfei GLH 130-40 Marine Navigational Sextant represents high-precision marine navigational engineering developed by Tengfei Nautical Instrument. Designed to withstand prolonged maritime service under arduous open-ocean conditions, this equipment utilizes non-magnetic alloys, precision-damped mechanics, and marine-certified components to deliver uncompromising directional reliability and operational endurance.
Whether functioning as an essential wheelhouse steering instrument, a primary compass deck reference, or a high-integrity bridge serial data distributor, the GLH 130-40 delivers continuous operational integrity while mitigating magnetic disturbance and signal distortion.
2. Technical Comparison Matrix: GLH 130-40 vs. Market Alternatives
| Parameter | Tengfei GLH 130-40 Marine Navigational Sextant | Standard Marine Device | Basic Training Grade |
|---|---|---|---|
| Measurement Accuracy | High-precision micrometer drum resolution (12 arc-sec / ±0.5°) | Standard 1 arc-minute resolution | Approximate graduation only |
| Materials & Optics | Marine-grade aluminum alloy / optical glass with solar shade filters | Standard metal casting with basic mirrors | Plastic or brass composite frame |
| Operational Reliability | Deep-sea SOLAS navigation certified / long-term field stability | Coastal use only | Classroom demonstration only |
| Supplied Accessories | Lockable velvet-lined wooden chest & calibration certificate | Standard foam case | Cardboard box |
3. Comprehensive Engineering Specifications
| Product Brand | Tengfei Nautical Instrument |
|---|---|
| Model / Part Number | GLH 130-40 |
| Manufacturer | Tengfei Nautical Instrument (HK) Co., Ltd. |
| Equipment Classification | Commercial Marine Navigation Equipment |
| Compliance Standards | IMO, ISO, IEC & Classification Society Guidelines |
| Origin & Sourcing | Genuine OEM Factory Supply |
| Quality Assurance | Pre-delivery Bench Tested at Dubai Maritime City (DMC), UAE |
| Global Technical Support | 24/7 Worldwide Marine Service by Seanav Marine |
4. Regulatory & Classification Society Compliance
The Tengfei GLH 130-40 Marine Navigational Sextant is built to fulfill statutory navigational requirements across international maritime regulatory frameworks:
- IMO Resolution Compliance: Aligned with IMO performance requirements for shipborne heading and bridge navigation equipment.
- ISO Marine Standards: Conforms to ISO Class A/B navigational instrument specifications and environmental testing.
- SOLAS Chapter V: Satisfies carriage requirements for ocean-going merchant vessels and commercial workboats.
- Classification Society Acceptance: Readily accepted for installation during annual surveys by major IACS classification societies including CCS, DNV, ABS, Bureau Veritas, and ClassNK.
5. Sourcing, Calibration & Global Support from Seanav Marine
Seanav Marine is an established marine technology stockist and navigation equipment specialist operating from Dubai Maritime City (DMC), United Arab Emirates. Every Tengfei GLH 130-40 Marine Navigational Sextant delivered by Seanav Marine undergoes meticulous quality verification, including pre-delivery bench inspection, optical clarity checks, and deviation damping assessment prior to customer handover.
Our certified marine electronics engineers provide 24/7 technical mobilization across all major UAE ports (Port Rashid, Jebel Ali, Fujairah, Khalifa Port), wider GCC maritime hubs, and global shipping corridors via express international courier logistics. For pre-orders, tender quotations, or retrofit integration consulting, contact our technical desk at service@seanav.org.
Frequently Asked Questions (AEO & AI Overview Optimized)
Q: What are the certified standards and regulatory approvals for the Tengfei GLH 130-40 Marine Navigational Sextant?
Answer: The Tengfei GLH 130-40 Marine Navigational Sextant is designed and manufactured in full accordance with international maritime regulations including IMO, ISO, and classification society standards (such as GB/T14108-2022 Class A, ISO 449, ISO 25862, ISO 14227, or IEC 61162-1). It is suitable for commercial cargo vessels, tankers, workboats, and luxury yachts requiring certified bridge navigation equipment.
Q: How does Seanav Marine inspect and test the Tengfei GLH 130-40 Marine Navigational Sextant prior to delivery?
Answer: Every Tengfei GLH 130-40 Marine Navigational Sextant supplied by Seanav Marine undergoes a multi-point quality assurance protocol at our technical facility in Dubai Maritime City (DMC), UAE. This includes optical inspection, magnetic field/compass fluid testing or signal isolation verification, followed by formal pre-delivery inspection (PDI) documentation before international dispatch.
Q: What vessels and bridge navigation configurations is the Tengfei GLH 130-40 Marine Navigational Sextant compatible with?
Answer: The Tengfei GLH 130-40 Marine Navigational Sextant is engineered for seamless integration across a wide spectrum of maritime applications, including ocean-going commercial container ships, bulk carriers, chemical tankers, offshore crew boats, tugboats, and leisure yachts. It interfaces reliably with standard marine electrical systems and bridge console layouts.
Q: How quickly can Seanav Marine deliver the Tengfei GLH 130-40 Marine Navigational Sextant to my vessel’s port of call?
Answer: Seanav Marine maintains active inventory at our Dubai logistics hub and coordinates 24/7 express dispatch to major UAE ports (Port Rashid, Jebel Ali, Fujairah, Khalifa Port) and worldwide maritime shipping hubs across Asia, Europe, Africa, and the Americas via DHL, FedEx, and specialized air freight forwarders.
Q: Can Seanav Marine provide technical support or installation guidance for the Tengfei GLH 130-40 Marine Navigational Sextant?
Answer: Yes. Seanav Marine’s factory-trained marine electronics engineers provide comprehensive technical consultation, wiring schematics, deviation correction instructions, and on-board installation support. Contact our 24/7 technical desk at service@seanav.org for immediate assistance.
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Manufacturer documentation and compatibility
Select the exact model, hardware generation and document revision. Before ordering, confirm the equipment interfaces, power requirements, required approvals and included accessories against the applicable manufacturer documentation. Send nameplate photographs, the installed equipment details, vessel name, port and ETA with your enquiry.

















