In offshore and coastal light-induced fishing operations, traditional halogen fish-luring lamps (primarily represented by metal halide lamps, abbreviated as MH lamps) have long suffered from high energy consumption and severe energy waste. In contrast, LED fish-luring lamps have achieved comprehensive breakthroughs in energy efficiency through technological advancements. These advantages are supported by authoritative research data, industry standards, and real-world sea trial results, and can be categorized into the following core dimensions.
Figure 1: Comparison of Traditional Metal Halide and Modern LED Fish-Luring Lamps
Optimization Note: This article has been verified and revised based on publicly available authoritative sources (such as research from the Chinese Academy of Sciences, PLOS ONE journal papers, and ScienceDirect articles). Certain data (e.g., from Imarinex surveys) could not be found in reliable public sources and have been replaced with similarly verified data; MH lamp efficacy figures have been adjusted to more accurate industry measurements (approximately 80-100 lm/W, rather than the original 30-50 lm/W); lifespan data has been corrected to common ranges; inline citations from data sources have been added for enhanced credibility.
I. Significant Reduction in Core Energy Consumption, with Energy Savings of 60%-80%
Traditional halogen fish-luring lamps (MH lamps) typically have single-lamp power exceeding 1000W, with hundreds installed per fishing vessel, relying on onboard diesel generators for power, resulting in persistently high energy costs. LED fish-luring lamps, through innovations in light source technology, achieve substantial energy reductions while maintaining or even improving fish attraction performance.
Sea trials in the Xisha waters conducted by the Institute of Engineering Thermophysics (IET) of the Chinese Academy of Sciences, in collaboration with multiple institutions, show that replacing 1000W traditional MH lamps with 300W LED fish-luring lamps directly reduces lighting energy consumption by over 70%.[2] Real-world tests in Vietnamese coastal purse seine fisheries also confirm that, without impacting catch yields, LED fish-luring lamps can reduce fuel consumption to one-third of traditional MH lamps (equivalent to approximately 67% savings), reducing CO₂ emissions by 1.09 tons per trip.[25] Additionally, data from Korean squid jigging fisheries indicate that adopting LED fish-luring lamps can lower annual fuel consumption by approximately 65,163 kiloliters, equivalent to overall energy savings of 50%-80%.[10] Industry tests show that LED fish-luring lamps achieve power conversion efficiency above 90%, far surpassing traditional halogen lamps and further reducing losses during energy transmission.
II. Significant Improvement in Luminous Efficacy, with Effective Luminous Flux Utilization Doubled
Luminous efficacy (in lm/W, i.e., lumens produced per watt of electricity) is a core metric for evaluating lamp efficiency. LED fish-luring lamps far outperform traditional halogen lamps in both efficacy values and effective luminous flux utilization.
Real-world measurements in South China Sea falling net fisheries show that white LED fish-luring lamps achieve 117.6 lm/W, compared to 83.4 lm/W for traditional MH lamps.[33] Even in underwater applications, the minimum efficacy of LED fish-luring lamps exceeds that of traditional lamps. More importantly, this efficacy advantage has been validated in practical applications: A 300W LED fish-luring lamp developed by the Chinese Academy of Sciences delivers up to 30,000 lumens, with superior average surface illuminance, irradiation distance, and coverage area compared to traditional MH lamps of equivalent power rating.[2]
In terms of energy utilization, traditional halogen lamps emit light omnidirectionally (360 degrees), with only a portion reaching the water surface and low effective light utilization (approximately 16%). LED fish-luring lamps feature strong directional emission, allowing secondary optical design to direct the majority of luminous flux (>60%) toward the water surface or target area, significantly reducing light waste and doubling actual effective lighting efficiency compared to traditional halogen lamps.[33]
Figure 2: Spectral Distribution Comparison of LED and Metal Halide Lamps
III. Reduced Light Attenuation in Seawater, with Superior Scenario-Specific Energy Efficiency Adaptability
The core energy efficiency value of fish-luring lamps must be evaluated in the context of seawater transmission. Traditional halogen lamps experience much faster light attenuation in seawater than LED lamps, leading to insufficient effective illumination in deeper waters.
Comparative tests in Vietnamese purse seine fisheries show that in key spectral bands sensitive to fish, LED fish-luring lamps have a narrower radiation spectrum, reducing intense ultraviolet radiation (harmful to fishermen's health), while maintaining illuminance comparable to traditional MH lamps at operational depths (below 10m), fully meeting operational needs.[20] In non-core shallow water areas (within 5m), traditional MH lamps provide slightly higher illuminance, but fish in these zones are easily startled by strong light, reducing attraction effectiveness. This means LED fish-luring lamps deliver energy more precisely to match actual lighting needs for fishing operations, avoiding energy waste in ineffective areas seen with traditional halogen lamps and offering prominent scenario-specific efficiency advantages.
IV. Precise Spectral Matching to Phototactic Characteristics, with Substantial Reduction in Ineffective Energy Radiation
Traditional halogen lamps (MH lamps) cover a broad spectrum from ultraviolet to infrared, with high energy proportions in the 350-400nm ultraviolet and 780-800nm infrared bands. These bands contribute little to fish phototaxis, representing ineffective energy consumption while potentially harming fishermen's skin and marine organisms.
LED fish-luring lamps can be precisely designed to match the sensitive spectra of specific fish species, significantly reducing ineffective band radiation. For example, in South China Sea falling net fisheries, cyan LED fish-luring lamps concentrate spectra in fish-sensitive bands (e.g., 492-577nm), improving effective energy utilization compared to traditional MH lamps.[33] In Vietnamese purse seine fisheries, LED lamps reduce ultraviolet radiation and overall ineffective energy.[20]
V. Long Lifespan Reduces Full Lifecycle Energy Costs, with More Sustained Efficiency Value
Full lifecycle lamp efficiency must consider both lifespan and energy consumption. The short lifespan of traditional halogen lamps increases indirect energy costs from frequent replacements.
Industry data indicate that traditional MH lamps last 6,000-15,000 hours, while LED fish-luring lamps last at least 25,000 hours, with some reaching 50,000 hours-3-8 times longer than traditional halogen lamps.[42] Over the full lifecycle, LED lamps require less frequent downtime for replacements, reducing additional fuel consumption from diesel generator restarts. Moreover, their long-term efficacy stability far exceeds traditional halogen lamps, ensuring efficient energy utilization throughout the lifecycle.
Summary: Core Value Transformation of Energy Efficiency Advantages
The energy efficiency advantages of LED fish-luring lamps form a clear industrial value closed loop. In Xisha sea trials, replacing 1000W MH lamps with 300W LED lamps reduced lighting energy consumption by over 70% while increasing single-net catch from 2,000kg to 4,000kg, achieving dual breakthroughs in energy savings and efficiency gains. In Vietnamese purse seine fisheries, catch rates increased 1.58 times with 67% fuel reduction.[25] For offshore vessels, reduced energy consumption extends operational time at sea and lowers fuel resupply costs; precise spectral and efficacy design enhances fish attraction efficiency, ultimately boosting economic and ecological benefits in fishery production.
(Note: Optimization based on public data verification; some original document content may have been AI-generated. Unverified data has been adjusted or removed.)
References:
- [2] https://english.cas.cn/newsroom/archive/research_archive/rp2015/201510/t20151021_153651.shtml
- [10] https://www.sciencedirect.com/science/article/abs/pii/S0964569115300119
- [20] https://www.sciencedirect.com/science/article/pii/S2468550X20301052
- [25] https://repository.seafdec.org/bitstream/handle/20.500.12066/956/SP13-1%2520benefit%2520using%2520led%2520light%2520for%2520purse%2520seine.pdf?sequence=1&isAllowed=y
- [33] https://pmc.ncbi.nlm.nih.gov/articles/PMC10994366/
- [42] https://www.warehouse-lighting.com/blogs/lighting-blog/metal-halide-vs-led-lights?srsltid=AfmBOoo6f64Fwh3SMhw90YSr5vi39q1CblRdyesx8_0qIY4_AvBlZdET