The Masthead Navigation Signal Light, with a 25W power rating and Type CXH3-3, is an essential marine navigational equipment designed to ensure the visibility of vessels on the water. Operating at a rated voltage of DC 24V, this signal light utilizes an incandescent lamp to project a white light through a lamp holder of type B15d. It boasts a significant horizontal arc of 225 degrees and a vertical arc of +5 degrees, ensuring a visible distance of 2 nautical miles. The robust construction of the lamp body from steel and the lamp shade from PC engineering plastic ensures durability and resistance to harsh marine conditions, as indicated by its IP56 protection class. This light is designed for seat-mounted installation and can withstand ambient temperatures ranging from -30C to +55C. The versatility of the lamp shade, available in transparent, red, green, and yellow, allows for compliance with various maritime signaling requirements. Weighing only 0.45 kg, it is a lightweight yet reliable solution for maritime navigation.