Abstract: In order to improve the recognizability of ship lights in the complex light environment to better protect the navigation safety of the ship at night, a new type of ship lights was designed according to the colorimetry and the emitting principle of semiconductor laser. Starboard light and masthead light of power-driven vessel with the length of no less than 50 m were selected as experimental objects. Starboard light and masthead light solid models were established in the three-dimensional solid modeling software (Lighttools) environment. Both of the lights- semiconductor laser spectral region, spectral weight, power, rays to trace, relative ray power threshold and other parameters were set to simulate the color properties at different reception distances. The simulation results show that: the color stimuli purity value of semiconductor laser starboard light is 1; the chromaticity coordinates of the semiconductor laser masthead light are close to the reference white (the chromaticity coordinates is (1/3, 1/3)); both of them meet the requirements of the International Regulations for Preventing Collisions at Sea for lights color properties.