Communication lighthouse

A custom - built lighthouse is a highly specialized structure designed to meet specific navigational, environmental, and operational requirements. **Location and Function - Based Classification** The lighthouse type varies according to its location and function. For instance, an offshore navigation lighthouse is strategically positioned in the open sea to guide vessels over long distances, while an inland waterway guiding lighthouse is tailored for rivers and canals. **Physical Dimensions** It has a well - defined set of physical dimensions. The overall height, which can reach up to 50 meters, spans from the lowest part of the foundation to the top of the light - emitting structure. The base diameter of 8 meters and upper structure diameter of 3 meters contribute to its stability and the proper placement of the light source. **Construction Materials** A combination of materials is used in its construction. The main body is often made of reinforced concrete for its strength and durability, while stainless - steel fixtures are employed for their corrosion - resistant properties. **Lighting System** The lighting system is a crucial aspect. The main lamp, with a power of 2000 W, provides high - brightness illumination for long - distance visibility in clear weather, reaching up to 25 nautical miles. Additionally, an auxiliary lamp with 500 W power serves as a backup or for supplementary functions. The flash pattern, like a repeated sequence of long - short - short flashes, is unique for identification, occurring at a frequency of 40 times per minute. In adverse weather such as fog, it can still be visible up to 10 nautical miles. The light color can be multi - colored, with red for danger indication and white for general navigation, and the light beam angle of 120° determines its coverage area. **Foundation and Structural Integrity** The foundation is designed to ensure stability. With a depth of 6 meters, it can be of a specific type like a pile foundation. To withstand various natural forces, the lighthouse has an anti - corrosion treatment consisting of an epoxy primer, zinc - rich intermediate coat, and polyurethane topcoat. It can resist strong winds up to Beaufort 12 and seismic activity of seismic intensity 8 according to the China standard. A comprehensive lightning protection system with multiple lightning rods and a low - resistance grounding system safeguards it from lightning strikes. **Monitoring and Emergency Provisions** It is equipped with remote monitoring capabilities, allowing for the tracking of parameters such as lamp status, power consumption, and wind speed around the lighthouse. In case of a main power failure, a 50 - kW diesel - powered generator serves as an emergency power supply. In summary, a custom - built lighthouse is a sophisticated and resilient structure that combines precise design, advanced technology, and robust construction to fulfill its vital navigational and safety functions in diverse environments.