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 first assistant engineer is the chief's assistant because he's in training to eventually assume a chief engineer's post. His primary duty lies in the transfer of liquid cargo, such as crude oil, and fueling the ship.He also stands a watch, the equivalent of a shift in charge of the engine department.he engine department of a ship is run by the ship's engineers. All are licensed U.S. Merchant Marine officers. The chief engineer runs the engine department and, because he started as a third assistant engineer, he can perform any of the required duties in the engine room.