Efficiency comparison of LED and MH lamps in purse seine fisheries

Metal halide (MH) lamp is applied in light fishing purse seine (PS). This lamp have weaknesses like wasteful energy, it is necessary to replace with energy saving lamp. Light emitting diode (LED) is potential to replace the MH. The experimental method in order to obtain data on different light intensity, fuel consumption, and number of catch in PS fishing using MH and LED lamps as fish attractor. Light intensity observations were done on each of 6 MH and LED lamps in the distance of 0-17 m. The LED lamp had focus more onto the front that enabled to reach farther distance, MH lamp had dispersed illumination distance. The LED lamp is more efficient in directing the lamp into the water. The number addition of MH lamps on different side of vessel does not increase the total amount of light intensity significantly. The ratio of the number captures of MH and LED lamps is 3.57:1 is much lower than the electric power ratio of both lamps (40:1). So that if the electric power LED lamps increased 6.2 times from 600 W to 3,875 W then the total number of fish from the LED lamps will approach the MH lamps.