What does the term 'tattletale' refer to in nautical terms?

The term 'tattletale' in nautical terminology refers to a small, natural line that is integrated or spaced into a synthetic fiber mooring line. This small line serves a critical function in the overall performance of the mooring line, often allowing for better handling and flexibility. Tattletales provide visual cues to sailors regarding the tension or condition of the mooring line, helping to indicate when adjustments may be necessary.

The use of natural materials in conjunction with synthetic fibers enhances the durability and functionality of the mooring line, allowing for effective securing of vessels. In this context, the ability to visually assess the condition of the line through the tattletale can greatly improve safety and operational efficiency on board.