Features: 1) CXH-101P double-tier navigation light and CXH-11P single-tier navigation light, this series lights are suitable for ships with the length of 50m or above 50m 2) CXH-21P suitable for the ship with the length of 12m or above 12m (less than 50m) 3) CXH-101P\CXH-11P series lamps adopt P28s bulb, it is convenient to install and replace 4) CXH-21P series lamps adopt BAY15D 5) CXH-101P\CXH-11P\CXH-21P material of shell is engineering plastic, lampshade is polycarbonate material. They are conforming to the IEC standard