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.
charging battery while its in the boat? charging battery while its in the boat? Is there a safe way to charge up my battery at home while its still on the boat? typically I remove it from the boat and charge in my garage, but a recent back injury makes this impractical with lifting and straining, etc.