What deck fitting is used for making fast lines that have been led through a chock?

The correct answer is a cleat, which is the fitting used for securing a line that has been led through a chock. Cleats are typically mounted on decks and provide a simple means of fastening a line securely. They have a design that allows the line to be wrapped around them, providing friction that holds the line in place.

The reasoning behind why a cleat is appropriate involves its practical use on vessels, where lines need to be secured quickly and efficiently. It allows for easy release when necessary, making it ideal for fastening lines that have been led through a chock, which guides the line smoothly in a controlled manner.

On the other hand, a bitt, which is also deck hardware, is more suitable for heavy lines and mooring applications but does not provide the same ease of securing and releasing lines as a cleat does. A fairlead is primarily used to guide lines and prevent chafing but does not have the securing capability required for fastening lines. A capstan is a rotating device designed to handle lines, typically used for hauling and tensioning rather than securing them in place.