Nylon line is better suited than manila for（）.

What should you do to a line to prevent fraying where it passes over the side of the vessel（）.

Manila slings should not be used to load（）.

Which material should NOT be used to secure cargo on deck for a voyage（）.

When securing a hook to the end of a wire rope you should use（）.

The square knot is used for（）.

The use of（）between bags may lead to chafe and tearing of the bags.

When towing，what is the main reason for using a chain bridle on a wire hawser（）.

What material may be substituted for zinc when making a poured metal socket ending to a wire rope（）.

When riveted joints occur at the ends of plating they are called（）.