Port navigation signal lights are essential for the safety and regulation of maritime traffic, especially during night-time navigation or in poor visibility conditions. These lights, typically rated at 60W or 65W, are designed to be highly visible and durable against harsh marine environments. They serve as critical components on vessels, indicating the ship's position, status, and direction of movement to other ships to prevent collisions and ensure safe passage. The lights must comply with international standards, ensuring they are visible at the required nautical mile range and can withstand a wide temperature range.