What type of line is susceptible to mildew and rotting?

Vegetable (natural) fiber lines are particularly susceptible to mildew and rotting due to their organic composition. Unlike synthetic fibers and polypropylene, which are designed to resist moisture and decay, natural fibers such as manila, sisal, and cotton absorb moisture from the environment. This moisture creates an ideal environment for mildew and fungi to thrive, leading to degradation of the material over time. As a result, natural fiber lines require careful storage and maintenance to prevent them from becoming compromised.

In contrast, synthetic fibers and polypropylene are designed to be more durable and resistant to environmental factors, making them less prone to these issues. Metal cables do not suffer from mildew or rotting, but they face other forms of corrosion or wear depending on their exposure to various conditions. Therefore, identifying the inherent vulnerabilities of natural fiber lines is crucial for effective usage and maintenance in maritime operations.