A Stern Navigation Signal LED Light with a power output of 2*6W is a critical component for maritime safety, ensuring that vessels are visible at night or in poor visibility conditions. These lights are designed to be long-lasting and energy-efficient, with LED technology providing bright, clear signaling to other ships. The specific configuration mentioned suggests a dual set-up, which can serve as a redundancy to enhance safety measures. It's essential for such lights to meet international maritime regulations to ensure they are recognized and understood by all vessels in international waters.