The Port Navigation Signal Light, with its specified type CXH2-10B, is a critical component for maritime safety, ensuring that vessels can communicate effectively during night navigation. This particular model is designed to operate with a rated voltage of DC 24V, AC 110V, or AC 220V, catering to various electrical systems on board. The dual power configuration allows for either 2*60W or 2*65W bulbs, which are incandescent, providing a reliable source of light. The color red is standard for port side signaling, adhering to international maritime regulations. 
 
The lamp holder model B22d ensures compatibility with widely used marine bulbs. A horizontal arc of 112.5 degrees and a vertical arc of +5 degrees give this light a precise range of visibility, crucial for the accurate conveyance of a vessel's position and movement. The visibility of 3 nautical miles (n.m) is within the range necessary for effective signaling at sea. The protection class of IP55 indicates that the light is well-protected against dust and low-pressure water jets from any direction, making it suitable for the harsh marine environment. 
The cable's outside diameter accommodation of 10~14 mm provides flexibility for various installation needs. The seat-mounted type installation method is a standard in the industry, allowing for secure placement and easy maintenance. The operating ambient temperature range of -30C to +55C ensures functionality in a wide range of climatic conditions encountered at sea. 
 
The robust steel used for the lamp body and the PC engineering plastic for the lamp shade ensure durability against physical and environmental stressors. The choice of red, green, yellow, or transparent shades allows for customization according to the specific requirements of the vessel or regulatory compliance. Lastly, the weight of 9 kg is substantial enough to withstand marine conditions while still allowing for manageable installation and handling. 
 
This comprehensive design ensures that the Port Navigation Signal Light Type CXH2-10B is not only compliant with safety standards but also versatile and durable for long-term use in the maritime industry. Its specifications cater to the rigorous demands of sea navigation, providing a dependable solution for signaling and communication on the waters.