Engineered to withstand harsh marine environments including salt spray, high humidity, and constant vibration, the TH5-1BR features an IP56 ingress protection rating, ensuring stable operation in temperatures ranging from -30°C to +50°C. The quick-release front cover simplifies routine maintenance, while multi-voltage compatibility (DC24V / AC110V / AC220V) allows seamless integration with most commercial vessels, fishing boats, offshore platforms, and work barges.
Item Details
Model：TH5-1BR
Product Type：Marine Port-Side All Round Navigation Light
Light Color：Red
Horizontal Sector Angle：112.5° (from dead ahead to 22.5° abaft the beam on the port side)
Visible Range：≥ 3 Nautical Miles
Rated Voltage：DC24V / AC110V / AC220V (Optional)
Light Source：Incandescent bulb (standard) / LED (upgrade available)
Protection Class：IP56 (Dust-tight & splash-proof)
Housing Material：High-strength die-cast aluminum alloy, anti-corrosion coated
Lens Material：High-transmittance polycarbonate / tempered glass with Fresnel optical design
Operating Temperature：-30°C ~ +50°C
Certifications：CCS (China Classification Society) Type Approval, Compliant with IMO COLREG 72
Mounting Type：Wall-mounted / bulkhead-mounted with standard flange
Working Principle
The TH5-1BR operates through three core functional systems to deliver compliant and reliable navigation signals:
1.Optical Signal System
Sector Control: Built-in light baffles limit the horizontal light emission to a 112.5° sector, ensuring the red signal is only visible to vessels approaching from the required port-side direction. This prevents light scattering and misinterpretation by other ships.
Long-Range Visibility: The Fresnel lens design focuses light from the source into parallel beams, maximizing luminous efficiency and achieving a 3-nautical-mile visible range while minimizing light loss.
2. Electrical Control System
Power Supply Compatibility: The lamp supports multiple marine-grade voltages (DC24V / AC110V / AC220V), connecting directly to the vessel’s main or emergency power distribution system.
Fault Monitoring: When integrated with the ship’s navigation light control panel, the lamp is monitored for current flow. A broken bulb or circuit failure triggers an audible/visual alarm to alert the crew immediately, ensuring navigation safety.
3. Environmental Protection System
Sealed Structure: The IP56-rated housing, combined with rubber gaskets and a quick-lock front cover, prevents water, dust, and salt spray from entering the internal components.
Anti-Corrosion & Vibration Resistance: The die-cast aluminum housing is coated with anti-corrosion paint, and internal components are shock-absorbed to withstand constant engine vibration and wave impact on board.
Application Scenarios
The TH5-1BR All Round Light is a mandatory safety device for vessels operating under international maritime regulations, suitable for the following scenarios:
1.Commercial Vessel Navigation
Ocean-Going Ships: Cargo ships, container vessels, bulk carriers, and oil tankers over 50 meters in length require this lamp as part of their standard navigation light suite, complying with COLREG 72 requirements for port-side identification.
Coastal & Inland Waterway Vessels: Fishing boats, tugboats, and work vessels operating in ports or narrow channels use the red signal to indicate port-side orientation, preventing collisions in high-traffic areas.
2. Offshore & Specialized Operations
Offshore Platforms & Barges: Fixed offshore installations and floating work barges use the TH5-1BR to mark port-side boundaries for approaching service vessels.
Night & Foggy Navigation: The high-visibility red signal is critical for navigation in low-light conditions, heavy fog, or poor visibility, ensuring other vessels can identify the ship’s position and direction.
3. Marine Safety & Compliance
Ship Inspection & Certification: Vessels must have certified navigation lights like the TH5-1BR to pass CCS, SOLAS, and port state control inspections, avoiding delays or fines.
Retrofit & Replacement: The lamp’s standard mounting and voltage options make it an ideal replacement for aging navigation lights on existing vessels, reducing maintenance costs and ensuring continued compliance.
Key Advantages
✅ Regulatory Compliance: CCS-approved and COLREG 72-compliant, meeting all international maritime safety
standards.
✅ Durable Marine Build: IP56 protection, anti-corrosion housing, and vibration resistance for long-term use in
harsh environments.
✅ Easy Maintenance: Quick-release front cover allows fast bulb replacement without removing the entire unit.
✅ Multi-Voltage Compatibility: Supports common marine power systems for flexible installation on various
vessel types.
✅ High Visibility: 3NM visible range and precision optical design ensure clear, unambiguous signals day and
night.
