Progressive flooding is controlled by securing watertight boundaries and（）.

Nylon line is NOT suitable for（）.

Regulations concerning the stowage，lashing，and securing of timber deck cargoes aboard general cargo vessels may be found in the（）.

All wire rope used in shipboard cargo gear must be identified and described in a certificate. The certificate shall certify all of the following EXCEPT the（）.

Placing a lashing across a hook to prevent a fitting from slipping out of the hook is called （）.

In the stowage of deck cargo，cribbing is（）.

Limber is a term associated with（）.

The release of the attached ship can（）only by provision of bail，usually a very large sum.

A spring line is a（）.

A sufficient amount of chain must be veered when anchoring a vessel to ensure（）.