What is the primary function of chocks on a ship?

The primary function of chocks on a ship is to guide mooring lines to the pier. Chocks are typically made of metal and are installed on the deck of the ship. Their design allows them to funnel and direct mooring lines, ensuring they run smoothly and correctly without chafing against the ship's structure. Properly guiding the lines helps maintain secure mooring and ensures the ship remains stable alongside the pier, especially in changing tides or currents. This function is crucial for safe and effective mooring operations.

While other options relate to various forms of securing or stabilizing equipment aboard a ship, they do not accurately capture the specific role of chocks in the mooring process.