What does the term "furl" refer to in boating context?

In the context of boating, the term "furl" specifically refers to the action of rolling or folding up sails tightly and securing them when they are not in use. This is an important practice because it helps to protect the sails from damage when the vessel is docked or when conditions are not favorable for sailing. Proper furling ensures that the sails are stowed securely and are organized, allowing for quick deployment when needed. Understanding this term is essential for boaters as it relates directly to sail management and overall vessel safety. The other options describe different actions related to boating but do not accurately capture the meaning of "furl."