What factor may contribute to the increased risk of slipping with synthetic lines compared to Manila?

The increased risk of slipping with synthetic lines compared to Manila can primarily be attributed to the coefficient of friction. Synthetic lines, made from materials like nylon or polypropylene, tend to have a lower coefficient of friction compared to natural fibers like Manila. This means that when pressure is applied, synthetic lines can slide more easily against surfaces or other materials.

In practical terms, when a synthetic line is used in tasks such as tying knots or securing cargo, there is a greater likelihood that the line will slip under tension. The lower friction reduces the effectiveness of the knots, making it essential for mariners to be aware of the characteristics of the materials they are using and to adjust their techniques accordingly to minimize the risk of slipping.

Understanding the coefficient of friction allows for better selection and application of lines and knots in various maritime scenarios, ensuring safer operations onboard.