A lifeline for a lifebuoy with an 8mm diameter and 30m length is a crucial safety device for maritime operations. It's typically made from durable materials like UV-resistant polyethylene to withstand harsh marine environments. These lifelines are designed to be highly visible and strong, with a breaking load capacity of around 500 kg, ensuring they can provide reliable aid during rescue situations. Compliance with SOLAS requirements guarantees that such equipment meets the highest safety standards, essential for any vessel at sea.