The most common shapes are called open-ended spanner and ring spanner. The term wrench is generally used for tools that turn non-fastening devices (e.g. tap wrench and pipe wrench), or may be used for a monkey wrench - an adjustable spanner. In North American English, wrench is the standard term.
The definition of first mate is the person on a boat that is second in charge after the captain. An example of first mate is the person who gives orders while the captain is busy. first mate. first mate.
The 2nd in command of any naval vessel or command is known as the Executive Officer, or XO for short. In the Army and Marines, it's typically the Chief of Staff or somet â¦ hing similar, but XO is also used. Rank doesn't make any difference - the title is given to whoever is the Commanding Officer's 2nd under him.